Fractional Sustainability Jobs · UK 2026
Fractional Sustainability Jobs · Hire a fractional sustainability director
Fractional sustainability jobs put a senior sustainability, ESG or carbon-reporting lead into a business part-time — usually because a reporting obligation has arrived before the organisation is big enough, or certain enough, to hire a full-time head of sustainability.
Most of these briefs are really reporting briefs.
Before scoping one, it is worth reading how the UK Sustainability Reporting Standards work and who they will apply to.
How a brief runswhat we undertake
- 01Brief30-MINUTE SCOPING CALLDay 0
- 02Shortlist of 3–5VETTED · RATE BENCHMARK · IR35After the brief
- 03InterviewsYOU MEET THE SHORTLISTYour diary
- 04Scoped startFIRST-MONTH OUTCOMES AGREEDYou set the date
- 05Fractional, interim and permanentIR35 POSITION SET OUTOn every brief
Shortlist3–5
15 minutes · video or phone
Book 15 minutes to hire a fractional sustainability lead
Tell us the scope and the days a week. We come back with Sustainability candidates, their day rates and availability.
- 0115 minutes, video or phone
- 02We scope the role and the days a week
- 03A shortlist of 3–5 after the call
- 04Fractional, interim and permanent briefs
Pick a day that suits · live availability
On the board · last 3 months
Fractional sustainability jobs on the board
No Fractional sustainability roles on the board in the last three months. Showing fractional executive roles instead.
- FractionalSyndicatedProduction Lead and Fractional CTO
Reg Advantage Ltd · London
est £1,500/dayLondon - FractionalSyndicatedReward Lead (Fractional- 12 month FTC)
Unity Advisory · London
est £750/day3 d/wk - FractionalSyndicatedFractional Financial Controller
LRO Financial Consultancy · Worcester
est £650/dayWorcester - FractionalAvailable now · our mandateFractional SDR
Confidential client (Fractional Quest mandate) · Remote
Rate not statedRemote - FractionalAvailable now · our mandateFractional Executive Assistant
Confidential client (Fractional Quest mandate) · London
Rate not stated2–3 d/wk - FractionalSyndicatedPart time / Fractional Finance Director
PHIX · United Kingdom
est £650/day3 d/wk - FractionalSyndicatedAcquisition CFO / Finance Director (Fractional)
CivSec Group · London
est £1,500/dayLondon - FractionalSyndicatedBusiness Affairs Executive (Fractional / Per-Project)
Twenty-Nine Palms Entertainment · London
est £1,100/dayLondon - FractionalSyndicatedFinancial Controller (fractional)
Fermtech · Oxford
est £550/dayOxford
Current fractional sustainability mandates
Fractional recruiting starts with the brief, not the CV pile. Send a Sustainability brief and we come back with a shortlist of three to five candidates, each through five-stage vetting.
01/ the role
What is a fractional sustainability role?
A fractional sustainability role is a senior sustainability or ESG seat held part-time, on a set number of days a week.
The seat has changed shape in the last few years: it used to be a communications and CSR job, and it is now largely a reporting and data job that sits close to finance.
The hiring manager is increasingly the CFO, because the disclosures sit in or next to the annual report.
The reporting landscape is the reason the fractional model fits.
Large UK companies have reported energy and carbon under Streamlined Energy and Carbon Reporting since April 2019 — the SECR reporting thresholds decide who is in scope.
On top of that, the UK has published its own versions of the ISSB standards, UK SRS S1 and S2, and groups with EU operations may also fall under the EU’s Corporate Sustainability Reporting Directive (CSRD).
The government’s UK SRS guidance explains how the standards were created by endorsing the ISSB’s global baseline, and that they are available for voluntary use.
Which companies are caught, and when, is set by the UK SRS thresholds and the UK SRS timeline.
A business facing its first cycle of any of these needs senior judgement for a defined period, which is exactly what a fractional hire is.
The other route is to buy that first cycle as a fixed project from a sustainability consultancy, rather than hold a senior seat part-time.
The best candidates can explain the frameworks in plain language, but what they are actually hired for is getting the numbers right: the carbon inventory, the data owners in each function, and a process that survives an auditor asking where a figure came from.
Membership of IEMA, the professional body for environment and sustainability, is one signal alongside that track record.
02/ scope
The seats businesses hire fractionally
Fractional head of sustainability
Owns the strategy and the reporting calendar.
Decides which sustainability reporting standards apply, sets the materiality assessment, and briefs the board.
Often converts to a permanent seat once the first reporting cycle is through.
ESG and climate reporting lead
Builds the disclosure itself — governance, strategy, risk management, and metrics and targets, the structure IFRS S2 and its UK equivalent share.
Works closely with finance on the connection between climate risk and the financial statements.
Carbon accounting lead
Runs the Scope 1, 2 and 3 inventory, chooses and implements the tooling, and owns the data trail.
Much of this seat is a systems decision — the carbon reporting software a business picks shapes how much of the inventory is automated and how much is spreadsheets.
Sustainability in bids and procurement
Public-sector buyers increasingly ask suppliers for a carbon reduction plan and evidence of net zero commitments as part of a tender.
A fractional sustainability lead in a supplier business often ends up writing those sections — and working alongside whoever runs public sector tenders on the bid side.
03/ the week
How a week divides.
Part of a week is the point of the model: the days you buy are yours, the rest of the week goes to other clients. Move the days a week and the week redraws.
Illustration only: one way a fractional sustainability lead’s week can divide at 2 days a week for you. Each block is half a day.
04/ the board
What the board holds.
A read of the roles on the board on this page, counted as they stand: how each is engaged, whether the posting gives the days and the rate, and where the work happens.
On this board, last 90 days · 9 roles · fractional executive
Engagement
- Fractional9
Seat
- Financial controller2
- CTO1
- Other1
- SDR1
- Executive assistant1
- Finance director1
- Other seats2
Days a week
- Stated in the posting2
- Not stated7
Day rate
- Verified rate0
- Estimated (est)7
- Rate not stated2
Work arrangement (as the job feed classifies it)
- Remote1
- Hybrid3
- On-site3
- Not classified2
Newest posting on the board: 16 Oct 2026.
Postings per week on this board, last 90 days
9 postings on this board in the last 90 days, counted by the week each was published.
05/ the route
Fractional, interim or permanent?
Four taps. The answer names the route for the seat and the page that covers it.
The route · Fractional
A fractional sustainability.The work fills part of the week, so buy the days it needs.
A fractional sustainability holds the seat on agreed days for as long as the seat is needed, and works for other clients on the rest.
The route · Interim
An interim sustainability.The work fills the week, and it has an end: a programme, a cover, a transaction.
An interim sustainability takes the seat full time for that stretch and hands it over when it is done.
The route · Interim, then permanent
Interim now, a permanent sustainability after.The seat is full time and long term, and the need is now.
An interim sustainability holds it while the permanent search runs, so the seat is not left empty.
The route · Permanent
A permanent sustainability.A full-time seat that sits at the table for years is a permanent hire.
There is time to run a search, so run one.
06/ timing
When a business hires sustainability fractionally
Three situations where the fractional shape fits.
Scenario 01
First reporting cycle
The business has crossed a reporting threshold, or a parent or lender is asking for disclosures it has never produced.
It needs senior judgement for one or two cycles, then a process a smaller team can run.
Scenario 02
Customer pressure
Large customers and public-sector buyers want Scope 1, 2 and 3 figures and a reduction plan from their suppliers.
A fractional lead builds the inventory and the answer once, instead of every account manager improvising it.
Scenario 03
Before a permanent hire
The business knows it needs sustainability leadership but cannot write the job description.
A fractional seat defines it — and often becomes it.
07/ vetting
How we vet fractional sustainability leads
What we undertake on every brief, before a candidate reaches you.
- 01
Qualification screen
Verify Sustainability tenure, sector context and stage fit.
SOURCING - 02
Mandate fit
Match to your situation — stage, board dynamics, timing.
MATCHING - 03
Reference deep-dive
We take references ourselves, from recent past clients — real outcomes, not titles.
VERIFY - 04
Shortlist
Three to five candidates with day rate, availability and IR35 position set out.
SHORTLIST OF 3–5
08/ the numbers
Hiring a part-time head of sustainability — SECR, carbon reduction plans and the inventory behind both
A part-time head of sustainability is usually hired to make one set of numbers stand up in several places at once.
For large UK companies and LLPs, the government's environmental reporting guidelines explain the Streamlined Energy and Carbon Reporting requirements — energy use and greenhouse gas emissions disclosed in the annual report — and encourage other companies to report in the same way voluntarily.
The requirements themselves are set by the Companies (Directors’ Report) and LLP (Energy and Carbon Report) Regulations 2018.
The same inventory then feeds procurement.
Under PPN 006, suppliers bidding for major central government contracts provide a Carbon Reduction Plan that commits to net zero, reports Scope 1 and 2 emissions and a defined subset of Scope 3, is approved by a director and is published on the supplier's website.
PPN 006's template reports emissions in line with the GHG Protocol Corporate Standard, which sets out how a company prepares a corporate-level emissions inventory.
That is why the seat sits close to finance: the carbon figures need the same data owners, controls and audit trail as the financial ones.
A fractional lead builds the inventory once, writes the reporting calendar and hands a repeatable process to the team.
For the board-level interim version, see interim chief sustainability officer jobs; where the plan is needed mainly for tenders, pair the seat with a fractional bid manager.
09/ questions
Fractional Sustainability FAQ
The questions people ask before bringing in a fractional sustainability lead.
Book 15 minutes · shortlist of 3–5
Bring the brief. We architect the team.
A shortlist of 3–5 with day rate, availability and IR35 position set out, after five-stage vetting.
