UK SRS timelineevery date, and which ones are real
The UK SRS timeline has one fact at its centre that most versions of it leave out. UK SRS S1 and S2 were published on 25 February 2026 for voluntary use, and the standards carry no effective date at all [1] [3].
Everything after that date is a proposal. The Financial Conduct Authority consulted on making UK SRS S2 mandatory for listed companies, that consultation closed on 20 March 2026, and no policy statement answering it had been published as at 19 August 2026 [4]. So the honest headline is the unglamorous one: no UK entity is required to report under UK SRS today.
The UK SRS timeline in one screen
Six dates, and the state of each. Nothing below is rounded, softened or borrowed from a summary of a summary.
Three kinds of date appear in any UK SRS timeline, and mixing them is how almost every version of it goes wrong. A date has happened: it is on the public record and can be quoted. A date is proposed: a regulator has said it intends something, subject to conditions it has stated. Or a date is arithmetic: nobody published it, and somebody worked it out. On this page the three are coloured, labelled and kept apart, and every calculation says it is ours.
The first thing worth being clear about is what 25 February 2026 was. It was the day the Department for Business and Trade published the finished standards. The GOV.UK guidance page states the position in a single sentence: “The standards are available for voluntary use, by any entity that chooses to do so” [1]. It was not a commencement date and it started no clock.
The government went further than not setting a date. It removed the effective date that the international standards carried. Annex A of the consultation response records the change in terms: “The effective date has been removed from UK SRS S1, meaning that entities can apply the Standard when they choose to do so, unless required by UK law or regulations to apply it from a specific reporting period” [3]. The same change was made to UK SRS S2. The standards were written to wait for a regulator.
That regulator is the FCA, for listed companies, and it has consulted but not concluded. Which is why the useful version of a UK SRS timeline is not a row of dates but a row of dates with their status attached. That is what follows.
The full UK SRS timeline, with the record on the left and the consequence on the right
Scroll it. The rail fills as you go, the marker shows where today sits, and every row carries its own state: green happened, amber is proposed, grey is not decided.
Most timelines on this subject are a single column of dates, which forces two different things into the same shape: what a regulator did, and what that means for a company that has to report. Those are not the same claim and they do not have the same reliability. So this one splits them. The left column is the record — a dated act, with the words the document actually used. The right column is what it changes for a preparer, which is our reading and is written as such.
On a narrow screen the two stack, the left card first, each labelled. On a wide screen they sit either side of the rail, and the side is fixed: the record is always on the left. It is never assigned by alternation, because the side carries meaning.
Dates in the rail are the ones each body published. The TODAY marker and the day count in the hero are computed when the page renders, so they cannot go stale between edits. The states are editorial: “not published” is a reading of a named page on a named date, and every one of them is footnoted in what is not decided.
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What has already happened on the UK SRS timeline
Five things are settled. They are worth stating plainly, because a page that only says what has not happened is no more use than one that invents what has.
1 · The standards exist, and they are finished
UK SRS S1 and UK SRS S2 are published documents. They are not drafts, not exposure drafts and not proposals. The Department for Business and Trade issued the final versions on 25 February 2026 after a twelve-week consultation and a formal endorsement process [1]. Anyone can read them, and anyone can apply them.
2 · They are voluntary, and were written to be
The government response is explicit that the standards may be used “in whole or in part, as they see fit” [3]. That is a deliberate design, not an oversight in the drafting. The standards wait to be picked up by a regulator or by legislation; until one does, they impose nothing.
UK SRS S1 paragraph 73A is asymmetric, and the asymmetry matters if you are adopting voluntarily. An entity that uses the climate-only relief may not assert compliance with UK SRS S1 — but it is not prevented from asserting compliance with UK SRS S2 while using any of the three reliefs, provided it discloses them. “Partial adoption is not permitted” is a common paraphrase and it is wrong in both directions.
3 · Both consultations have closed
DBT’s consultation on the standards closed on 17 September 2025 with 209 responses. The FCA’s consultation on who must apply them closed on 20 March 2026, with no response count published [4]. There is no open consultation on UK SRS to respond to. If a supplier tells you there is, ask which one and check the date. The full account is on the UK SRS consultation page.
4 · The assurance question has been answered, and the answer was “voluntary”
Government decided in January 2026 to establish a voluntary, opt-in oversight regime for sustainability assurance providers, with a public register kept by the FRC [14]. The FCA separately declined to mandate assurance: it says it is “not proposing to set mandatory requirements for the assurance of sustainability reporting at this time”, and would instead require an in-scope company to state whether or not it obtained third-party assurance [5].
5 · The TCFD-aligned rules you may already report against are still live
If you are a commercial company in UKLR 6, you are already making TCFD-aligned climate disclosures under the current listing rules, and you have been for several years. CP26/5 paragraph 4.4 proposes to delete those rules and replace them with UK SRS S2. Until the policy statement lands, the old rules are the live ones. That is the practical shape of this whole timeline: not a new duty arriving, but an existing duty being swapped for a bigger one. How TCFD maps to UK SRS sets out the overlap.
“The standards are available for voluntary use, by any entity that chooses to do so.”
GOV.UK · UK Sustainability Reporting Standards guidance · last updated 25 February 2026
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What the FCA has proposed, paragraph by paragraph
Every future date in the UK SRS timeline comes from one document. Here it is, with the paragraph numbers, so you can check us.
CP26/5 is the FCA’s consultation on aligning listed issuers’ sustainability disclosures with international standards [5]. It is the only source for 2027, 2028 and 2029, and it hedges in four separate places. Reading the hedges is the difference between a plan and a guess.
You will read that around 515 companies in UKLR 6, 14, 15, 16 and 22 must comply with UK SRS. That sentence routes the 89 secondary-listing and depositary-receipt companies into full scope, and CP26/5 does the opposite: it puts them on a branch that carries no UK SRS obligation at all. The 515 are UKLR 6, 16 and 22 — the categories are defined in the FCA’s UK Listing Rules sourcebook [24]. Note also that the paragraph naming the categories in words (Annex 2 ¶ 43) is not the paragraph giving their numbers (¶ 3.4) — you need both, and citing one for the other overstates it. UK SRS thresholds works the scope question properly.
What the proposals would actually require
In one sentence: in-scope listed companies would report climate under UK SRS S2 on a mandatory basis, apply the parts of UK SRS S1 relevant to those climate disclosures, and treat Scope 3 and beyond-climate topics on a comply-or-explain footing. The government’s own summary of the FCA’s proposal says the same thing from the other side, which is a useful cross-check when a commentator’s paraphrase drifts [3].
Note what is not in the proposals: no mandatory assurance, no requirement to have a transition plan (only to disclose one you have), and nothing at all for companies outside those five UK Listing Rules categories. AIM is not in CP26/5. Private companies are not in CP26/5. The legislative picture explains why the FCA could not reach them even if it wanted to.
The UK SRS timeline for your accounting period
1 January 2027 is the calendar-year case. If your year begins in April, July or October, none of the headline dates are yours.
The reliefs in CP26/5 run from initial application, and paragraph 8.8 defines initial application as the beginning of your first annual reporting period starting on or after 1 January 2027. So a company with a 31 March year end has a first in-scope period beginning 1 April 2027, and its reliefs unwind three months later than the calendar-year company’s — the offset between the two year ends, no more and no less. The two fixed dates in paragraph 3.9 — 1 January 2028 and 1 January 2029 — are that same sum worked for a calendar year.
This grid computes; it does not look up a prewritten answer. Change the month and the periods, the relief expiries and the publication year all move. What it cannot do is make the proposals into rules — every cell in it is conditional on a policy statement that does not exist.
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Three transition reliefs, and the one nobody counts
Most coverage lists two reliefs. CP26/5 sets out three, and the third is the one that decides whether your existing carbon accounting can carry straight over.
One year, Scope 3. No disclosure of Scope 3 greenhouse gas emissions for one year from initial application (¶ 8.6) — though you must still state that you have not disclosed them (¶ 8.12).
Two years, beyond climate. No disclosure under UK SRS S1 for non-climate matters for two years from initial application (¶ 8.6).
One year, measurement method. Continued use of an alternative greenhouse gas measurement method where it was in use immediately before, plus relief on comparative information (¶ 8.7). If you have been measuring to something other than the GHG Protocol Corporate Standard [26], this is your year to converge.
Paragraph 8.12 has two limbs and the second is routinely quoted without the first. A company using a relief must still state in its annual financial report that it has not made the disclosures — the FCA’s stated purpose is that use of the reliefs is transparent. What it need not do is explain why, because using a relief does not engage the proposed “explain” provisions. So the sequence over the proposed phasing is: say you have not, then later say why not, then disclose. Three positions, not two, and none of them is saying nothing.
And the sentence that keeps the whole thing honest is paragraph 4.8: “Even once the transition reliefs end, listed companies in these categories would report against UK SRS S2 Scope 3 provisions on a ‘comply or explain’ basis.” Scope 3 never becomes flatly mandatory for these issuers under these proposals. It moves from a relief you need not explain, to an obligation you may discharge by explaining. If you are budgeting a supplier-data programme against a 2028 “deadline”, that distinction is worth several hundred thousand pounds of scoping.
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Is UK SRS mandatory yet? No — and here is how to check that for yourself
As at 19 August 2026, no UK entity is required by any law or rule to report against UK SRS S1 or UK SRS S2. Three independent things would each have to be true for that sentence to be wrong, and none of them is.
One. The standards would need an effective date. They have none; it was deliberately removed [3].
Two. A regulator would need to have made a rule. The FCA has consulted and not concluded; its own page still says it aims to publish a policy statement [4].
Three. Or Parliament would need to have legislated. It has not; the programme that might, Modernisation of Corporate Reporting, has not even consulted [25].
It is worth separating “not mandatory” from “not happening”, because they are different claims and only the first is defensible. The direction of travel is not in serious doubt: the standards are finished, the endorsement process ran, the FCA has consulted on a mandatory climate rule, and the government has said in writing that it intends listed issuers to report against UK SRS S2. What is in doubt is when, and for whom, and on what terms — and those are precisely the things a policy statement settles.
The failure mode to avoid is the one that shows up in board papers: treating 1 January 2027 as a statutory deadline, building a programme against it, and then discovering that the rule which would have created it was published in October 2026 with a different scope, or was not published at all. The honest planning posture is to prepare for a proposal, not to comply with one. See UK SRS compliance and the UK SRS deadline question.
Pick what you are. The answer under UK SRS is the same for everyone; what differs is everything else that applies to you, and what the proposals would do next.
Four branches, four different answers about what applies to you — and one identical answer about UK SRS. That is the shape of the UK SRS timeline in August 2026, and a page that cannot say so plainly is not telling you the most important thing it knows.
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What is not decided, and the policy statement still awaited
A dated negative is a fact. These are the eight that matter, each with what we looked at and when.
Anyone can list what has happened. The harder and more useful thing, when a regime is mid-implementation, is to be precise about the holes — because that is where a plan built on a summary quietly breaks. Every item below was re-checked on 19 August 2026.
Two of those are worth sitting with, because they are dates that have already slipped: policy proposals on transition plans were expected in autumn 2025, and the assurance register was to be operational by mid-2026. Neither slipped through anyone’s fault in particular. But a timeline that has already missed two of its own soft dates is not a timeline you should treat the third one as certain.
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The regimes that are in force while UK SRS waits
Deliberately a different component from the timeline above, because these are not UK SRS dates and should never be read as if they were.
The reason “UK SRS is not mandatory” lands badly with some readers is that it sounds like “you have nothing to do”, and for most organisations that is false. Several UK reporting regimes are live, enforced and running to fixed dates right now. Here they are, in date order, so the contrast with the amber rail above is visible.
Read the two rails together and the practical answer falls out. The regimes with penalties attached are the in-force ones; UK SRS is the one where preparation is optional but the preparation window is where all the work sits. Sustainability reporting and the wider UK regulation timeline put the whole landscape together.
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When the first UK SRS reports would actually be published
Accounting periods are not publication dates, and the difference is a whole year of programme time.
CP26/5 talks in accounting periods. It never says when a report lands on a website. That matters, because the two numbers behave differently in a plan: the period start is when your data collection has to be running, and the publication date is when the disclosure is externally visible and auditable by anyone who cares to.
For a calendar-year company on the FCA’s proposals, the first in-scope period is 1 January to 31 December 2027, and the annual report covering it is published during 2028. We label that as our arithmetic every time it appears on this page, because it is: two separate probes of the consultation document confirm the FCA states no publication year at all.
A Scope 1 and 2 inventory for the year to 31 December 2027 needs its boundaries, meters and conversion factors settled in 2026. There is no retrospective fix for a year of missing meter data.
UK SRS S1 requires disclosure of the governance processes actually used. A board committee created in January 2028 cannot be described as having overseen 2027.
Relief on comparative information is not a fourth relief — it travels with the measurement-method relief in paragraph 8.7, and it is the first to run out.
ISSA (UK) 5000 is effective for periods beginning on or after 15 December 2026. A practitioner cannot assure a process they first saw at the year end.
Which is the real reason this page is worth reading even though nothing is mandatory: the preparation lead time is longer than the notice period. If the policy statement lands in, say, November 2026 with a 1 January 2027 start, in-scope companies get weeks of formal notice for a programme that needs quarters. The organisations that are ready will be the ones that treated the proposal as a plan. See the readiness assessment and what is happening in 2026.
If the policy statement slips, what actually moves
Not everything moves together, and knowing which parts are coupled is the whole value of watching this closely.
The FCA has bound its own timing to something it does not control: the policy statement is “subject to the final UK SRS”, and the endorsement decision sits with government (¶ 8.5) [5]. The standards are now final, so that condition looks satisfied — but the sentence has not been withdrawn, and until the policy statement is published we are reading intentions, not rules.
What would move together
The 2027 start and the two relief expiries are defined relative to initial application, so if the start date moves, 2028 and 2029 move with it by the same amount. They are not independent dates and should not be tracked as if they were.
What would not move
ESOS phase 4, SECR, the Companies Act climate rules and ISSA (UK) 5000’s effective date are all fixed by their own instruments and are entirely unaffected. So is the EU’s revised ESRS timetable. A slip in the UK SRS timeline does not buy you time on any of those.
What a slip would signal
Two soft dates on this timeline have already passed unmet — policy proposals on transition plans, promised for autumn 2025, and the assurance register, tasked for mid-2026. Neither is evidence of a policy reversal. Both are evidence that the sensible planning assumption is a range, not a date. If autumn 2026 passes without a policy statement, the first thing to re-examine is not the start date but whether the 1 January 2027 period start survives at all, since a rule made in December cannot reasonably commence a fortnight later.
One: the CP26/5 page’s own last-updated stamp, which is the cheapest signal available and currently reads 05/06/2026. Two: the FCA’s policy statement stream. Three: any Handbook instrument deleting the TCFD-aligned listing rules, which is the change that makes it real. Our CP26/5 tracker follows the first two.
What to do with the time before any UK SRS deadline
There is no UK SRS deadline today. There is a preparation window, and it is the part of this that behaves like a project.
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Work out whether you are in the 515, the 89, or neither. That single question changes everything downstream, and a surprising number of companies have it wrong because they read a summary that merged the two branches. Who is in scope and the thresholds settle it.
Do the gap analysis against UK SRS S2, not against a summary of it. You are almost certainly already making TCFD-aligned disclosures. The delta is narrower than it is usually described, and the paragraph numbers matter: scenario analysis “commensurate with the entity’s circumstances” (S2 ¶22, and ¶B15 lets a scenario narrative alone support the resilience assessment — quantification is never mandatory), the connected information requirements at S1 ¶¶21–24, and the full Scope 3 architecture — which S2 ¶C4 lets you leave undisclosed, with no time limit. That is where the work is. TCFD to UK SRS.
Start Scope 3 anyway. Even on the FCA’s own proposals it is comply-or-explain rather than mandatory, indefinitely. But “explain” means writing publicly about why you cannot measure your own value chain, and that is a worse sentence to have to draft than most boards expect. Scope 3 reporting.
Consider voluntary adoption, in part. The standards may be used in whole or in part. A voluntary UK SRS S2 disclosure in a 2026 or 2027 report is the cheapest rehearsal available, and it is the one thing on this page you can do without waiting for anybody.
Do not buy software, consultancy or assurance against a deadline that has not been set. A vendor quoting you “the January 2027 UK SRS deadline” is quoting a consultation paragraph with the hedges removed. The date may well arrive; it is not a rule today, and the difference should be reflected in what you sign.
You now know which dates on the UK SRS timeline are real and which are proposals. The next question is the one that decides whether any of them are yours.
Check whether UK SRS reaches you Or read what UK SRS S1 and S2 actually require, if you already know you are in scope.
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The UK SRS S1 and S2 timeline in reference form
Every date on this page in one table, with its state and its source, for copying into a board paper.
The words that decide whether a date is real
One consequence of that last row is worth stating, because it comes up constantly. Future ISSB work — nature, human capital — does not arrive in the UK automatically. The FRC is explicit that such standards “would not automatically apply in the UK” and must be endorsed first [10]. On nature the UK committee is still at research stage [17], and the ISSB’s own exposure draft is anticipated for October 2026 [19]. Any UK nature-reporting date you are shown was invented by whoever showed it to you.
UK SRS timeline — the questions people actually ask
Answered from the primary sources above, and dated where the answer could change.
No. As at 19 August 2026 no UK entity is required by law or by any regulator’s rule to report against UK SRS S1 or UK SRS S2. The standards were published on 25 February 2026 for voluntary use and carry no effective date, and the FCA’s proposal to make UK SRS S2 mandatory for listed companies is still a consultation with no policy statement answering it.
It has started, but not in the sense of an obligation. The standards exist and can be used voluntarily today. The first date on which anyone might be required to apply them is 1 January 2027, and that is the FCA’s proposed start for accounting periods beginning on or after that date, not a rule. Nothing commences on it unless the policy statement lands first and says so.
Happened: 25 June to 17 September 2025, DBT’s exposure-draft consultation, which drew 209 responses; 25 February 2026, UK SRS S1 and S2 published for voluntary use; 30 January to 20 March 2026, FCA CP26/5. Proposed: autumn 2026, an FCA policy statement; 1 January 2027, rules coming into force for accounting periods beginning on or after that date; 1 January 2028, the Scope 3 relief spent; 1 January 2029, the UK SRS S1 non-climate relief expired.
Not as at 19 August 2026. The CP26/5 page still carries the forward-looking sentence that the FCA will aim to publish a policy statement in autumn 2026, subject to the final UK SRS, and the page’s own last-updated stamp reads 5 June 2026. We note the method, because it is stronger than a search: the FCA’s policy statements sit at predictable numbered addresses, and the newest that exists is PS26/17 on fund liquidity risk management, with PS26/18 returning a 404. The FCA’s publication search itself is unreadable to automated tools because robots.txt disallows query-string URLs, so enumerating the series is the way round it.
No, and that is deliberate. Annex A of the government’s consultation response records that the effective date was removed from UK SRS S1 so that entities can apply the standard when they choose, unless required by UK law or regulation to apply it from a specific reporting period. The same change was made to UK SRS S2. The standards were written to wait for a regulator to pick them up.
On the FCA’s proposals, listed companies in three UK Listing Rules categories: UKLR 6 commercial companies, UKLR 16 non-equity and non-voting equity shares, and UKLR 22 transition. The FCA’s cost benefit analysis puts that population at 515, out of around 600 listed companies affected. The remaining 89, listed only in the UKLR 14 secondary listing or UKLR 15 depositary receipts categories, would instead disclose whatever applies in their primary listing location and would carry no UK SRS obligation.
No. The one-year transitional relief ends for accounting periods beginning on or after 1 January 2028, but CP26/5 paragraph 4.8 says that even once the transition reliefs end, listed companies in these categories would report against the UK SRS S2 Scope 3 provisions on a comply-or-explain basis. So the obligation moves from a required statement that Scope 3 has not been disclosed, with no explanation needed, to full comply-or-explain reporting — and it stays there.
During 2028, for a calendar-year company, since a 31 December 2027 accounting period is reported the following year. That publication year is our arithmetic and we label it as such: CP26/5 states accounting periods throughout and never states a publication year. If your accounting period is not the calendar year, both the period and the publication year move.
Not as printed. The reliefs run from your date of initial application, which CP26/5 paragraph 8.8 defines as the beginning of your first annual reporting period starting on or after 1 January 2027 and before 1 January 2028. For a 31 March year end that is 1 April 2027, so your Scope 3 relief runs to the period beginning 1 April 2028 and your non-climate relief to 1 April 2029. The calculator on this page works your dates out from the month your period begins.
Not yet, in any concrete sense. The FCA regulates listed issuers and cannot reach a private company. The only route is the Modernisation of Corporate Reporting programme, announced to Parliament on 21 October 2025, which will consider whether the Companies Act should require private entities to report against UK SRS. The government said in February 2026 that a consultation would follow later that year; none has been published as at 19 August 2026.
No, at no point on this timeline. The FCA states it is not proposing mandatory assurance requirements at this time, and would instead require an in-scope company to say whether or not it obtained third-party assurance, without giving reasons if it did not. Separately, the government decided in January 2026 on a voluntary, opt-in oversight regime for assurance providers, with a public register kept by the FRC.
It is the FRC’s UK version of the IAASB’s global sustainability assurance standard, issued on 12 November 2025 and described by the FRC as intended for voluntary use by UK assurance providers. Its own paragraph 15 makes it effective for engagements on sustainability information reported for periods beginning on or after 15 December 2026, or as at a specific date on or after that, with earlier application permitted. It governs how assurance is done, not whether you must have it.
No, and it has not been decided. The consultation on climate-related transition plan requirements closed on 17 September 2025 and the GOV.UK page still reads that the government is analysing feedback, eleven months later. UK SRS S2 requires disclosure of a transition plan an entity has, including key assumptions and dependencies, but nothing currently requires an entity to have one.
No. SECR has applied to large companies and LLPs since accounting periods beginning on or after 1 April 2019 and is unaffected. ESOS phase 4 has a qualification date of 31 December 2026 and a compliance date of 5 December 2027, both statutory and both enforced. The government has said it will consider the interaction between UK SRS and SECR to reduce duplication, but no change has been made.
They converge on the same year from opposite directions. The revised ESRS adopted by the European Commission on 3 July 2026 apply for financial years beginning on or after 1 January 2027 — the same year the FCA proposes for UK SRS — but the EU regime is in scrutiny and heading for the Official Journal, while the UK regime is still a consultation without a policy statement. The two also differ fundamentally on materiality: UK SRS applies single, financial materiality — information that could reasonably be expected to influence the decisions of primary users of general purpose financial reports (S1 ¶18), judged by reference to the entity’s cash flows, access to finance or cost of capital (S1 ¶3) — while the ESRS add an impact perspective on top of a financial limb worded almost identically (ESRS 1 ¶47). Neither test is “enterprise value”.
Yes, and the government response is explicit that the standards may be used in whole or in part, as an entity sees fit. One nuance is worth knowing: UK SRS S1 paragraph 73A is asymmetric. An entity using the climate-only relief may not assert compliance with UK SRS S1, but it is not prevented from asserting compliance with UK SRS S2 while using any of the three reliefs, provided it discloses that it has done so.
The proposed 2027 start and the two relief expiries are defined relative to initial application, so they would move together rather than independently. Nothing else on the UK calendar would move: SECR, ESOS phase 4, the Companies Act climate rules and ISSA (UK) 5000’s effective date are all fixed by their own instruments. Two soft dates on this timeline have already passed unmet, so a range rather than a date is the sensible planning assumption.
Not on any published date. The FRC is explicit that new or amended ISSB standards would not automatically apply in the UK and must go through the UK’s endorsement process first. On nature, the UK Sustainability Disclosure Technical Advisory Committee is at research stage, with its project plan approved in April 2026, and the ISSB’s own output is expected to be a practice statement with an exposure draft anticipated in October 2026. Any UK date for nature reporting is invented.
Every date on this page, and where it comes from
Thirty-two sources, named and dated. Where a source could not be read today, the page says so rather than borrowing someone else’s summary of it.
- UK Sustainability Reporting Standards — guidance — GOV.UK / DBT, published 19 Sep 2024, last updated 25 Feb 2026. Re-read 19 Aug 2026.
- Exposure drafts: UK Sustainability Reporting Standards — GOV.UK / DBT, 25 Jun 2025, concluded 17 Sep 2025.
- Government response to the exposure-draft consultation, including Annex A — DBT, 25 Feb 2026 (PDF).
- CP26/5: Aligning listed issuers’ sustainability disclosures with international standards — FCA. Opened 30/01/2026, closed 20/03/2026, page last updated 05/06/2026. Re-read 19 Aug 2026.
- CP26/5, the consultation paper itself — FCA (PDF). Paragraph references throughout this page are to this document.
- Climate change and sustainable finance: reporting requirements — FCA, last updated 05/06/2026.
- IFRS S1 General Requirements for Disclosure of Sustainability-related Financial Information — IFRS Foundation.
- IFRS S2 Climate-related Disclosures — IFRS Foundation.
- IFRS Sustainability Standards Navigator — IFRS Foundation.
- Sustainability reporting developments — frequently asked questions — FRC, last updated 26 Feb 2026.
- FRC takes steps to support quality and consistency in the assurance of sustainability reporting — FRC, 12 Nov 2025.
- ISSA (UK) 5000, General Requirements for Sustainability Assurance Engagements — FRC, November 2025 (PDF). Effective date at paragraph 15.
- Assurance of sustainability reporting — consultation — GOV.UK / DBT, 25 Jun 2025, concluded 17 Sep 2025, 99 formal responses.
- Developing an oversight regime for assurance of sustainability-related financial disclosures — government response — GOV.UK, updated 30 Jan 2026.
- Climate-related transition plan requirements — consultation — GOV.UK / DESNZ, 25 Jun 2025. Status as at 19 Aug 2026: “We are analysing your feedback”.
- UK Sustainability Disclosure Technical Advisory Committee — FRC.
- TAC research project: nature-related disclosures — FRC. Project plan approved 21 Apr 2026; ISSB exposure draft anticipated October 2026.
- UK Sustainability Disclosures Policy and Implementation Committee — 2026 meeting minutes — GOV.UK, published 17 Feb 2026. Not read for this page: the page returns 403 to automated reading, so nothing on this page rests on the minutes’ contents.
- ISSB agrees proposed way forward on nature-related disclosures — IFRS Foundation, May 2026. Overtaken in part: the ISSB approved balloting of an exposure draft of a proposed Practice Statement on 21 July 2026, with a 120-day comment period, per the IFRS work plan. The October 2026 expectation is corroborated by source [17].
- Comply with the Energy Savings Opportunity Scheme (ESOS) phase 4 — Environment Agency, published 30 Jul 2026.
- The Companies (Strategic Report) (Climate-related Financial Disclosure) Regulations 2022, SI 2022/31 — legislation.gov.uk. Financial years beginning on or after 6 April 2022.
- The Companies (Directors’ Report) and Limited Liability Partnerships (Energy and Carbon Report) Regulations 2018, SI 2018/1155 — legislation.gov.uk. The statutory basis of SECR.
- Environmental reporting guidelines, including SECR guidance — DEFRA/BEIS, March 2019 (PDF).
- UK Listing Rules sourcebook (UKLR) — FCA Handbook. The categories 6, 14, 15, 16 and 22 referred to throughout.
- Modernisation of Corporate Reporting — written ministerial statement HCWS973 — UK Parliament, 21 Oct 2025. Not re-read today: parliament.uk blocks automated reading. Every MCR claim on this page rests on source [3] instead.
- GHG Protocol Corporate Accounting and Reporting Standard — GHG Protocol.
- Recommendations of the Task Force on Climate-related Financial Disclosures — TCFD. The task force was disbanded in 2023 and its work absorbed by the ISSB.
- Commission adopts revised sustainability reporting standards — European Commission, 3 Jul 2026. Adopted and in the scrutiny period.
- Sustainability Disclosure Requirements and investment labels — FCA. A separate regime for investment products, not corporate reporting.
- SASB Standards — IFRS Foundation. Referenced permissively by UK SRS S1 rather than required.
- The UK’s new voluntary sustainability assurance register expected later in 2026 — ICAS, 29–30 Jul 2026. The newest dated record we could find on whether the register has opened.
- UK SRS timeline — sister reference — sustainabilityreportingstandards.co.uk. The same milestones with a different emphasis.
On method. Where a primary source could not be read, this page says so in the source entry rather than filling the gap: sources [18] and [25] are both flagged. And the central negative — no FCA policy statement — rests on two stamped FCA pages plus site-restricted search, because the FCA’s publication index is closed to automated reading. That is a weaker form of evidence than reading the index, and we would rather say so than imply we read it.
Where to go next
The timeline answers “when”. These answer “whether”, “what” and “how”.