--- title: "C40 Cities Climate Leadership rating | CharityCompare" description: "Is C40 Cities Climate Leadership a legitimate UK charity? Clarity Score 79/100. Accounts 2024: income £14m · 96% on charitable activities. Reg 1173124." source: https://www.charitycompare.org.uk/charity/c40-cities-climate-leadership retrieved: 2026-08-18T03:21:02.244Z license: "Charity data © Crown copyright, Open Government Licence v3.0" --- Quick answer ## Is C40 Cities Climate Leadership a good charity? C40 Cities Climate Leadership scores 79/100 (4 stars, Good) on CharityCompare's Clarity Score, calculated from its UK regulator filings. Its latest accounts year is 2024 (£14m total income, 96% of spending on charitable activities). This reflects financial transparency and stewardship on paper — not the real-world impact of its programmes. See the full breakdown. London · UK-wide · EC1Y 8RN | Reg [1173124](https://www.charitycompare.org.uk/charity/c40-cities-climate-leadership) | Registered charity | [Official website](https://www.c40.org/c40-uk) | [Charity Commission register](https://register-of-charities.charitycommission.gov.uk/en/charity-search/-/charity-details/1173124) Donate ## How can you give to C40 CITIES CLIMATE LEADERSHIP? You leave CharityCompare to complete a donation on the official C40 CITIES CLIMATE LEADERSHIP form. We do not process payments or take commission. Opens their official online donation form. [Donate](https://www.c40.org/c40-uk?utm_source=charitycompare&utm_medium=referral&utm_campaign=donate&utm_content=1173124) ## What does C40 Cities Climate Leadership do? C40 Cities Climate Leadership is a registered charity (no. 1173124) working in environment across the United Kingdom. Its latest Charity Commission filing directs 96% of spending to charitable activities, holding roughly 3 months of reserves, and files its annual accounts on time. Reported income has been growing (≈18% a year). CharityCompare's Clarity Score rates the organisation only from public Charity Commission accounts — accountability, financial health, efficiency and community support — not the quality or impact of its programmes. Summarised from public filings — C40 Cities Climate Leadership hasn't added its own description yet. [Work here? Add it free →](https://www.charitycompare.org.uk/claim?charity=c40-cities-climate-leadership) **In short:** C40 CITIES CLIMATE LEADERSHIP scores 79 out of 100 (4 stars). 96% average program spend (3-year average). Filings are up to date with no major concerns. ## What is C40 Cities Climate Leadership? C40 Cities Climate Leadership has a Clarity Score of 79 out of 100 on CharityCompare (4 stars, Good). Charity Commission registration number 1173124. Status: Registered. Primary cause area: Environment. Latest accounts year 2024: total income £14m, with 96% of expenditure on charitable activities. Accounts filing: up to date. Reserves: approximately 3 months of operating costs. No major red flags from our filing review. Scores are independent and based on official filings — not a donation recommendation. Data from [Charity Commission register](https://register-of-charities.charitycommission.gov.uk/), last updated 17 July 2026. Overall score 79/100 4★ · Good Cause spend 96% 3-yr avg · charitable activities Accountability 85/100 Finance beacon Income £14m Latest year 2024 Reserves 3 mo Months of running costs Accounts filing On time Charity Commission £765.6 raised per £1 fundraising (3-yr avg) · 1% overhead · Website on register · Confidence: high ## How does C40 CITIES CLIMATE LEADERSHIP compare? Clarity Score percentile against similar UK charities — the share of peers C40 CITIES CLIMATE LEADERSHIP scores higher than. Income band (£10m+)55thpercentile **Scores higher than 55% of 943 charities in its income band** · 79/100 vs 77 peer average (marker). Environment charities57thpercentile **Scores higher than 57% of 460 charities in this cause** · 79/100 vs 76 peer average (marker). ## How reliable is C40 Cities Climate Leadership's data? Source Charity Commission (England & Wales) Accounts year 2024 Filing date 24 June 2026 Profile reviewed 17 July 2026 High confidence — complete filing data Scores reflect the latest annual accounts on the register. Clarity Score measures how clearly the charity accounts for money in those filings — not programme impact. Contains public sector information licensed under the Open Government Licence v3.0. Sources: [Charity Commission for England and Wales](https://register-of-charities.charitycommission.gov.uk/), [Office of the Scottish Charity Regulator](https://www.oscr.org.uk/) and [Charity Commission for Northern Ireland](https://www.charitycommissionni.org.uk/). [Open Government Licence v3.0](https://www.nationalarchives.gov.uk/doc/open-government-licence/version/3/). ## What is C40 Cities Climate Leadership's Beacon report? Detailed accountability and finance metrics from UK regulator filings — structured for transparency in our four-beacon report. ### Accountability & Transparency Baseline trust from filing discipline, board oversight, and declared governance policies. 85/100 | Metric | Score | Value | | --- | --- | --- | | Filing history (5 years) 100% on-time over five years = 15 pts · one late filing = 5 pts · two or more = 0 pts. | 100% | 15/15 pts | | Trustee oversight Three or more trustees on the register = 15 pts, scaled down for fewer (governance red flag below three). | 100% | 8 trustees · 15/15 pts | | Declared policies Safeguarding (4) · conflict of interest (3) · volunteer management (3) — from Charity Commission annual return. | 40% | 4/10 pts | ### Financial Health Stability and solvency — reserves, revenue trend, and debt from Charity Commission accounts. 83/100 | Metric | Score | Value | | --- | --- | --- | | Reserves (months of cash) 3–24 months = full marks, tapering on both sides · 0 months or 4+ years (hoarding) = 0 pts. | 100% | 3 months · 15/15 pts | | Income stability / growth +20% or more over the window = 10 pts · flat = 5 pts · −20% or worse = 0 pts, scaled between. | 100% | 10/10 pts · 3-year average | | Liabilities to assets 0% liabilities-to-assets = 5 pts, scaling down to 0 pts at 60%+ debt. | 0% | 56% · 0/5 pts | ### Financial Efficiency How efficiently funds reach the cause — program spend and fundraising cost ratios. 100/100 | Metric | Score | Value | | --- | --- | --- | | Program expense ratio 90%+ on charitable activities = full marks, scaling down to 0 pts at 50% or below. | 100% | 96% · 10/10 pts (3-year average) | | Fundraising efficiency ≤10p to raise £1 = full marks, scaling down to 0 pts at 40p or above (fundraising cost ÷ income). | 100% | 0p per £1 income · 10/10 pts (3-year average) | ### Community Support Grassroots backing from Charity Commission workforce data — volunteers vs paid staff. 0/100 | Metric | Score | Value | | --- | --- | --- | | Volunteer-to-staff ratio Volunteers at 2x staff or more = full marks · no volunteers = 0 pts, scaled between. | 0% | Not reported · 0/10 pts | [How we calculate beacon scores →](https://www.charitycompare.org.uk/methodology) ## What is C40 Cities Climate Leadership's Clarity Score? 79/100 total · Good · 4 of 5 stars Four pillars (40 + 30 + 20 + 10 points) from Charity Commission filings — see methodology for full weightings. 85/100 Accountability & Transparency 83/100 Financial Health 100/100 Financial Efficiency 0/100 Community Support ### Accountability & Transparency Baseline trust from filing discipline, board oversight, and declared governance policies. 85/100 Filing history (5 years)15/15 pts Trustee oversight8 trustees · 15/15 pts Declared policies4/10 pts ### Financial Health Stability and solvency — reserves, revenue trend, and debt from Charity Commission accounts. 83/100 Reserves (months of cash)3 months · 15/15 pts Income stability / growth10/10 pts · 3-year average Liabilities to assets56% · 0/5 pts ### Financial Efficiency How efficiently funds reach the cause — program spend and fundraising cost ratios. 100/100 Program expense ratio96% · 10/10 pts (3-year average) Fundraising efficiency0p per £1 income · 10/10 pts (3-year average) ### Community Support Grassroots backing from Charity Commission workforce data — volunteers vs paid staff. 0/100 Volunteer-to-staff ratioNot reported · 0/10 pts ## How much does C40 Cities Climate Leadership raise and spend? Latest filed year 2024 · Source: Charity Commission filings | Category | Amount | % of spend | | --- | --- | --- | | Total income | £14m | — | | Total expenditure | £14m | — | | Charitable activities | £14m | 100% | | Governance & admin | £40k | 0% | 100%On charitable activities ## Where does the money go? Latest accounts (2024) · £14m spent - Charitable activities100% · £14m - Governance0% · £40k ## What trust indicators does C40 Cities Climate Leadership have? Pulled from the Charity Commission register — filing behaviour, board size, and workforce where reported. - ✓ Accounts filed on time up to date · last filing 24 June 2026 - ✓ Trustee board size (3–12) 8 trustees on the Charity Commission register Fundraising Regulator Status not yet checked Separate from our financial scores — shows whether the charity follows the Code of Fundraising Practice. [Check Fundraising Regulator →](https://www.fundraisingregulator.org.uk/members/) Official register Reg 1173124 Full trustee list, accounts, and regulatory history on the Charity Commission. [View on Charity Commission →](https://register-of-charities.charitycommission.gov.uk/en/charity-search/-/charity-details/1173124) ### Trustees & officers - ANTHA WILLIAMS since 2017 - Maria Vittoria Beria since 2026 - Jesper Traerup Nygard since 2026 - Mete Coban since 2026 - Shirley Ann Rodrigues since 2026 - Ana Cristina Wollmann Zornig Jayme since 2026 - Jennifer Semakula Musisi since 2026 - Bruce Robert Lindsey since 2026 100 How we score charities +The Clarity Score is a 100-point rating from UK regulator filings (Charity Commission for England and Wales, OSCR and CCNI). Four pillars — Accountability & Transparency (40), Financial Health (30), Financial Efficiency (20), and Community Support (10) — each scored on a continuous scale, not pass/fail cutoffs. A statutory inquiry sets the score to 0 automatically. [Full methodology →](https://www.charitycompare.org.uk/methodology) Accountability & Transparency Scored from filings 40 points — filing history (15), trustee oversight (15, scaling up to a board of three or more), declared policies (10). Financial Health Scored from filings 30 points — reserves (15, full marks 3–24 months, tapering on both sides), income stability (10), liabilities to assets (5, scaling down as debt rises). Financial Efficiency Scored from filings 20 points — program expense ratio and fundraising cost, each on a graduated scale (not a single cutoff). Kept at 20% of the total: financial-ratio scoring alone is not a reliable effectiveness signal (see "why not just an overhead ratio?" below). Community Support Scored from filings 10 points — volunteer-to-staff ratio from Charity Commission workforce data, scaling continuously up to a 2:1 ratio. Overall score Sum of all pillar points. Display stars use the same bands as the labels: 90–100 → 5★ Exceptional; 75–89 → 4★ Good; 60–74 → 3★ Needs improvement; 1–59 → 2★ Poor; 0 → not rated. ## How have C40 Cities Climate Leadership's finances changed over five years? - Income - Spending - Cause spend Values in £ thousands · Cause spend plotted only when the filing discloses a split · Source: Charity Commission accounts ## What are the key facts about C40 Cities Climate Leadership? Overall score 79/100 (4★) Income £14m Cause spend 96% of expenditure Reg number 1173124 Scope UK-wide Reserves 3 months Trustees 8 Accounts year 2024 Filing up to date ## How does C40 CITIES CLIMATE LEADERSHIP compare, and where else can you look? [Compare C40 CITIES CLIMATE LEADERSHIP with others](https://www.charitycompare.org.uk/compare-charities?ids=c40-cities-climate-leadership) [More environment charities](https://www.charitycompare.org.uk/browse/environment) [How we score charities](https://www.charitycompare.org.uk/methodology) ### Where C40 CITIES CLIMATE LEADERSHIP sits The causes this charity is classified under, and other charities working nearby. - [environment charities](https://www.charitycompare.org.uk/browse/environment) - [education charities](https://www.charitycompare.org.uk/browse/education) - [Charities in London](https://www.charitycompare.org.uk/cities/london) - [environment charities in London](https://www.charitycompare.org.uk/browse/environment/london) ### Similar environment charities Top-rated peers by CharityCompare score - [ESSEX AND SUFFOLK RIVERS TRUST](https://www.charitycompare.org.uk/charity/essex-and-suffolk-rivers-trust) 100/100 · £963k - [GREAT WESTERN SOCIETY LIMITED](https://www.charitycompare.org.uk/charity/great-western-society-limited) 99/100 · £3.9m - [THE MID-NORFOLK RAILWAY PRESERVATION TRUST](https://www.charitycompare.org.uk/charity/the-mid-norfolk-railway-preservation-trust) 99/100 · £2.5m - [THE SHARPHAM TRUST](https://www.charitycompare.org.uk/charity/the-sharpham-trust) 99/100 · £2.2m ## How can you share C40 Cities Climate Leadership's rating? 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Free to use — a lightweight HTML badge or an embeddable score widget, each linking back to this independent profile and our [methodology](https://www.charitycompare.org.uk/methodology). BadgeScore widget [♥ CharityCompare Clarity Score 79/100 ★★★★★](https://www.charitycompare.org.uk/charity/c40-cities-climate-leadership) Lightweight HTML badge (no iframe) — paste anywhere ♥ CharityCompare Clarity Score 79/100 ★★★★★ Copy code ## Frequently asked questions Common questions about C40 Cities Climate Leadership's rating, finances, and Charity Commission status. Is C40 Cities Climate Leadership a good charity? + C40 Cities Climate Leadership scores 79 out of 100 (4 stars — Good) on CharityCompare's Clarity Score, our independent read of its UK regulator filings. Around 96% of its spending goes to charitable activities and its accounts are up to date. That reflects how transparent and financially healthy it looks on paper — it does not measure the real-world impact of its work, so treat it as one factor alongside the cause you care about. CharityCompare never tells you where to donate. Is C40 Cities Climate Leadership a legitimate charity? + Yes — C40 Cities Climate Leadership is a legitimate registered charity (charity number 1173124). Verify it on the official register: https://register-of-charities.charitycommission.gov.uk/en/charity-search/-/charity-details/1173124. Registration proves status; Clarity Score then summarises filing transparency on paper, not programme impact. What is C40 Cities Climate Leadership's charity number? + C40 Cities Climate Leadership's charity number is 1173124. Check that number on the official register (Charity Commission, OSCR or CCNI) or this CharityCompare profile before you donate — scammers sometimes reuse real numbers on fake appeals. What is C40 Cities Climate Leadership's charity rating? + C40 Cities Climate Leadership scores 79 out of 100 on CharityCompare (4 stars — Good). The Clarity Score V1 sums four pillars from UK regulator filings: Accountability & Transparency (40 pts), Financial Health (30), Financial Efficiency (20), and Community Support (10). Stars use the same bands as those labels — 90+ is 5★ Exceptional. It is not an impact ranking. Does C40 Cities Climate Leadership have reviews and complaints? + CharityCompare does not host public user reviews for C40 Cities Climate Leadership. Instead you get a filing-based Clarity Score, cause spend, reserves and red flags such as late accounts. For formal complaints about a charity, contact the Charity Commission, OSCR, CCNI or the Fundraising Regulator as appropriate. How much of my donation reaches C40 Cities Climate Leadership? + According to its 2024 regulator filing, 96% of C40 Cities Climate Leadership's total spending went to charitable activities (3-yr avg across disclosed years). That is the closest official figure to "how much of your donation reaches the cause" — it is an average across all spending in the filing, not a pound-by-pound breakdown of an individual gift. What are C40 Cities Climate Leadership's overheads? + According to its 2024 regulator filing, fundraising costs were about 0% of total expenditure and combined overheads (fundraising plus governance) were about 1% of total expenditure at C40 Cities Climate Leadership. The filings CharityCompare uses do not publish CEO or senior-staff pay, so we cannot say what C40 Cities Climate Leadership's chief executive is paid — where disclosure rules apply, senior pay appears in the trustees' annual report on the Charity Commission register. How much income does C40 Cities Climate Leadership receive? + C40 Cities Climate Leadership reported £14m total income in its 2024 accounts, based on UK regulator filings. Five-year trend: growing. Are C40 Cities Climate Leadership's accounts up to date? + Filing status: up to date (last filing 2026-06-24). CharityCompare flags late or missing accounts separately from the financial score. Where is C40 Cities Climate Leadership based? + C40 Cities Climate Leadership is listed at London · UK-wide · EC1Y 8RN and operates UK-wide, focused on environment. How does CharityCompare score C40 Cities Climate Leadership? + We calculate a Clarity Score of 0–100 from four pillars in C40 Cities Climate Leadership's regulator filings: Accountability & Transparency (40 points — filing history, trustees, policies), Financial Health (30 — reserves, income trend, debt), Financial Efficiency (20 — cause spend and fundraising cost, on a graduated scale) and Community Support (10 — volunteer-to-staff ratio). An open statutory inquiry scores 0. The score measures reporting on paper, not programme impact. CharityCompare is free for donors, takes no commission on donations, and scores cannot be bought. How often is this page updated? + This profile was last updated on 17 July 2026 from the latest UK regulator data available to CharityCompare, and C40 Cities Climate Leadership's most recent accounts cover 2024. Scores and figures refresh whenever we re-ingest the register, so the page reflects our latest data pull rather than a one-off review.