Vendor profile · in its own words
Diligent: profile and UK reporting claims
This short profile records what Diligent says about itself, who owns it, and what its pages claim, read on 11 October 2026.
It is not a review or a rating; this site has tested no software.
What it says it does
Diligent, as Diligent describes it
Diligent’s carbon accounting page describes a solution that “automatically collates your data and produces up to 80 different pre-configured audit-ready reports”. (paraphrased closely from its site).
Diligent announced on 22 October 2025 that it will transition its carbon accounting clients to Persefoni and take an equity position in Persefoni.
Diligent is a governance, risk and compliance company; its carbon accounting page was still live when read, but on 22 October 2025 it announced that its carbon accounting clients would move to Persefoni.
Anyone evaluating Diligent for carbon accounting should read the Persefoni profile.
The platform its clients are moving to is profiled at Persefoni.
This site files Diligent under carbon accounting, from what its own pages describe; the categories are a way to find it, not a judgement of it.
Owner and status
Who owns Diligent, dated
Carbon accounting clients moving to Persefoni (announced 22 October 2025), according to the announcement.
22 October 2025: Diligent and Persefoni form a partnership, in Diligent’s own announcement.
Ownership in this market has moved quickly since 2025; the dated record is on the Greenly–Normative merger page.
- 22 October 2025Diligent and Persefoni form a partnership
Diligent will transition its carbon accounting clients to Persefoni’s platform and take an equity position in Persefoni. It is a partnership, not an acquisition.
Claims table
What Diligent’s pages claim, regime by regime
Each cell is Diligent’s own words, linked to the page it is on, or a note that no claim was found on the pages read.
A missing claim is a question to put to the vendor, not evidence that the product lacks the capability.
| What we looked for | In Diligent’s own words | What the regime is |
|---|---|---|
| SECR output | No claim found on the pages read | UK directors’-report energy and carbon disclosure for quoted and large unquoted companies and LLPs. SI 2008/410, Schedule 7 |
| UK SRS | No claim found on the pages read | UK Sustainability Reporting Standards S1 and S2, published by DBT for voluntary use; listed companies report on a comply-or-explain basis for periods from 1 January 2027. FCA PS26/19 |
| ISSB / IFRS S2 | No claim found on the pages read | The ISSB’s IFRS S1 and S2, the international standards UK SRS is built from. IFRS S2 |
| CSRD / ESRS | No claim found on the pages read | The EU Corporate Sustainability Reporting Directive and its ESRS, narrowed in 2026 by Omnibus I. Directive (EU) 2026/470 |
| ESOS | No claim found on the pages read | The UK Energy Savings Opportunity Scheme for large undertakings; Phase 4 notification by 5 December 2027. Environment Agency ESOS guidance |
| PPN 006 | No claim found on the pages read | Carbon Reduction Plans for bidders on in-scope UK central government contracts. PPN 006 Technical Standard |
| CBAM | No claim found on the pages read | A carbon border mechanism; the UK CBAM from 1 January 2027 is a separate regime from the EU CBAM. HMRC CBAM policy summary |
| LCA / product footprint | No claim found on the pages read | Product life-cycle assessment and product carbon footprints, governed by product standards rather than the corporate inventory. GHG Protocol Product Standard |
| Scope 3 | Save time and resources by enabling automated auditable data collection, cleansing, analysis and reporting across over 2,000 fuels and business activities, including all Scope 1, 2, 3 | Value-chain emissions in the fifteen Scope 3 categories. GHG Protocol Scope 3 Standard |
Where it appears
Diligent in this site’s guides
Diligent is listed in the vendor directory on 19 guides, chosen by the categories above.
Sustainability reporting software
Carbon emissions tracking software
Spend-based carbon accounting software
Carbon reduction commitment software
How to choose ESG reporting software
Event carbon reporting software
Logistics carbon reporting software
Diligent’s own website is diligent.com.
Frequently asked
Diligent, answered from its own pages
What is Diligent?
Diligent’s carbon accounting page describes a solution that “automatically collates your data and produces up to 80 different pre-configured audit-ready reports”. This site files it under carbon accounting.
Who owns Diligent?
Carbon accounting clients moving to Persefoni (announced 22 October 2025), according to the announcement linked on this page.
Diligent announced on 22 October 2025 that it will transition its carbon accounting clients to Persefoni and take an equity position in Persefoni.
How much does Diligent cost?
Diligent publishes no price on the pages read, so this site records it as Enterprise level · TBD.
Ask for a written quote that includes implementation and the cost of adding an entity.
Does Diligent support SECR, UK SRS or CSRD?
On the pages read, Diligent makes claims about Scope 3.
A missing claim is a question to put to the vendor, not evidence that the product lacks the capability.
Sources
Primary sources
Diligent’s pages are cited only for what Diligent says about itself, read on 11 October 2026.
The regulatory masters describe each regime, not the vendor.
- Diligent (vendor’s own page)diligent.com/solutions/carbon-accounting
Read for what the vendor says about itself; nothing else.
- Diligent (vendor’s own page)diligent.com
Read for what the vendor says about itself; nothing else.
- Diligent (vendor’s own page)diligent.com/company/newsroom/diligent-and-persefoni-form-strategic-partnership
Read for what the vendor says about itself; nothing else.
- Diligent (vendor’s own page)diligent.com/company/about-us
Read for what the vendor says about itself; nothing else.
- Diligent (vendor’s own page)diligent.com/company/contact-us
Read for what the vendor says about itself; nothing else.
- Diligent (vendor’s own page)diligent.com/lp/diligent-sec-climate-disclosure-software
Read for what the vendor says about itself; nothing else.
- Regulatory masterGHG Protocol Scope 3 Standard
What Scope 3 is; the vendor’s claim is checked against nothing here.
Continue reading
Read next
Carbon reporting software
What each UK regime requires a platform to produce, and all 73 vendors in their own words.
Carbon accounting software
The tests the number underneath any disclosure has to survive.
ESG software comparison
Comparing ESG platforms against the UK duties you actually carry.