Sustainability role
Head of Sustainability — UK Role, Salary & Hiring Guide
The Head of Sustainability runs the UK sustainability function operationally — typically managing a 5–25 FTE team, owning the corporate carbon inventory, leading regulatory disclosure (UK SRS S2, SECR, ESOS) and delivering the transition plan.
No official UK statistic breaks down sustainability salary by seniority; see the salary section below for sourced, caveated pay context.
What a Head of Sustainability does
A Head of Sustainability runs the sustainability function operationally — managing the team (typically 5–25 FTE), owning the corporate carbon inventory, leading the regulatory disclosure cycle (UK SRS S2, SECR, ESOS, CSRD where applicable), running the materiality assessment, and delivering the transition plan in operational terms.
The role sits below the CSO (where one exists) and reports to the CSO, CFO or COO depending on company structure.
Mid-market UK companies typically have a Head of Sustainability without a CSO.
FTSE 100 companies typically have both.
The Head of Sustainability role has moved closer to finance over the past two years.
The trigger is alignment with finance: IFRS S2 requires climate disclosures to connect to the related financial statements, and UK SRS S2 requires sustainability-related financial disclosures to cover the same reporting period and reporting entity as, and to be published at the same time as, the audited financial statements 1.
That has pulled the role away from a purely operational reporting cycle and into board-level capital-allocation discussions.
Heads of Sustainability who can credibly sit alongside the CFO are increasingly well placed in the market, though no official UK statistic quantifies that premium by seniority.
"Mid-market UK companies are increasingly recruiting Heads of Sustainability who can both run the team and credibly sit in board-level capital-allocation discussions."UK SRS Implementation Guide
What is actually known about UK Head of Sustainability pay
There is no official UK statistic for sustainability-role salary broken down by seniority — analyst, manager, director, CSO.
The only defensible UK anchor is the ONS-derived Home Office "going rate" for SOC 2020 unit group 2152 "Environment professionals": a whole-occupation median of £37,200, based on a 37.5-hour week, drawn from ASHE 2024 data and applied from 22 July 2025.
That figure is a median across the whole occupation group, not a seniority-graded figure for this specific role.
Recruitment sources circulate much higher figures for senior sustainability roles, but none currently verifiable against a disclosed UK sample.
OneStop ESG's widely-quoted UK director-level (£123,816) and manager-level (£63,741) averages are, by OneStop's own account, Shirley Parsons and Hays figures relayed second-hand, with the UK sub-sample size never stated.
Principal People's and Gillespie Manners' CSO/Director salary figures have been retracted as evidence — neither discloses a sample or method.
Treat any specific Head of Sustainability salary figure quoted elsewhere as an unverified market claim, not a statistic, until a source with a disclosed UK sample exists.
Recruiters commonly describe a London premium and sector premiums (financial services, oil & gas / utilities, pharmaceuticals) for senior sustainability roles.
The site's fact store holds no source with a disclosed UK sample large enough to state a specific premium percentage, so none is given here.
Head of Sustainability vs CSO vs Sustainability Director
UK sustainability titles are inconsistent.
The CompareTable below shows how the three senior roles typically differ in scope, reporting line and accountability.
(No verified UK statistic exists to compare salary by seniority across these roles — see the salary section above.)
| Aspect | Head of Sustainability | Sustainability Director | Chief Sustainability Officer (CSO) |
|---|---|---|---|
| Seniority | Senior Manager / Department Head | Director-level (board-adjacent) | C-suite / board |
| Reports to | CSO, CFO or COO | CSO or CEO | CEO or board sustainability committee |
| Capital-allocation authority | Operational input | Senior input | Authority |
| External face | Industry bodies, regulators (operational) | Investor relations support | Investors, regulators, board |
| Team size | 5–25 FTE | Variable | Function-wide oversight |
| Typical company size | Mid-market to FTSE 350 | FTSE 250 / large private | FTSE 100 / large financial services |
What the Head of Sustainability owns — regulatory timeline
The Head of Sustainability is accountable for delivery against the active UK regulatory regimes.
The timeline below shows the milestones that shape the role's work programme through 2029.
Head of Sustainability — Frequently Asked Questions
The most common UK Head of Sustainability questions, with answers linking to dedicated role guides, regulatory pages and cited salary sources.
Topics: role definition, salary, CSO vs Head, Sustainability Director vs Head, qualifications, sectors, hiring, role evolution.
What does a Head of Sustainability do?
A Head of Sustainability runs the sustainability function operationally — managing the team (typically 5–25 FTE), owning the corporate carbon inventory, leading the regulatory disclosure cycle (UK SRS S2, SECR, ESOS, CSRD where applicable), running the materiality assessment, and delivering the transition plan in operational terms.
The role sits below the CSO (where one exists) and reports to the CSO, CFO or COO depending on company structure.
See Chief Sustainability Officer for the C-suite role comparison.
What does a UK Head of Sustainability earn?
There is no official UK statistic for sustainability-role salary by seniority.
The only verified UK anchor is the ONS-derived Home Office going rate for SOC 2152 "Environment professionals": a whole-occupation median of £37,200, based on a 37.5-hour week and ASHE 2024 data — not a figure specific to Head of Sustainability seniority.
Recruitment sources quote much higher figures for senior sustainability roles, but the widely-circulated OneStop ESG UK director-level (£123,816) and manager-level (£63,741) averages are, by OneStop's own account, Shirley Parsons and Hays data relayed second-hand, with the UK sub-sample size never stated 1.
Principal People's and Gillespie Manners' CSO and Director salary figures have been retracted as evidence — neither discloses a sample or method 3 4.
Treat any specific salary figure for this role as an unverified market claim, not a statistic.
Head of Sustainability vs CSO — what's the difference?
A CSO is a board/C-suite role with capital-allocation authority, profit-and-loss influence, and external face (investor relations, regulators).
A Head of Sustainability runs the function operationally — managing the team, owning the inventory, leading the disclosure cycle.
Mid-market UK companies typically have a Head of Sustainability without a CSO; FTSE 100 companies typically have both, with the Head reporting to the CSO.
Head of Sustainability vs Sustainability Director — what's the difference?
Often the same role under different titles. "Director" implies director-level seniority (board-adjacent); "Head" implies functional leadership.
UK practice is inconsistent.
Where both titles exist at the same company, Sustainability Director typically reports to the CSO or sits on the senior leadership team, while Head of Sustainability runs operations one level below.
What qualifications does a Head of Sustainability need?
There is no single mandatory qualification.
Most Heads of Sustainability hold a relevant degree (environmental science, engineering, business or finance) plus one or more UK credentials: IEMA Practitioner Member (PIEMA), Chartered Environmentalist (CEnv) via the Society for the Environment, or chartered accountant (ICAEW/ACCA) plus sustainability specialisation.
Increasingly, candidates from finance and strategy backgrounds are succeeding in the role because alignment with financial statements (IFRS S2 / UK SRS S2) is now central.
See how to become a sustainability consultant for the qualification pathway.
Which sectors hire Heads of Sustainability?
Most mid-market and large UK companies above SECR thresholds have a Head of Sustainability.
Highest density: financial services (PCAF financed emissions), oil & gas and utilities (transition pressure), retail and consumer (Scope 3 product-use emissions), real estate (operational + embodied carbon), pharmaceuticals, and increasingly PE-backed portfolio companies.
The role is now standard across FTSE 350.
How do I hire a UK Head of Sustainability?
Most Head-of-Sustainability hires go through retained search or specialist recruitment (typically £15k–£30k fixed retainer or 20–25% of first-year salary on success).
The leading UK firms include Acre, EnableGreen, Hanson Search, Principal People, Lewis Davey, Shirley Parsons and Verdant Search — see the UK sustainability recruitment agency guide.
Typical search length: 8–14 weeks.
Brief the consultant on your specific regulatory perimeter (UK SRS S2 mandatory date, SECR scope, CSRD exposure) — generalist briefs produce generalist shortlists.
How is the Head of Sustainability role evolving?
Three shifts: closer alignment with finance (the role now sits closer to the CFO under IFRS S2 / UK SRS S2); operational accountability for the transition plan; and assurance pressure (under ISSA (UK) 5000 and the FRC Interim Register).
Mid-market companies are increasingly recruiting Heads who can both run the team and credibly sit in board-level capital-allocation discussions.