Environment & Climate Community & Social Justice
2025 Enhanced
Marine Conservation Society (MCS)

Annual Impact Report & Accounts 2024-25

The Marine Conservation Society is a leading UK ocean charity, fighting for cleaner, better-protected and healthier seas through people-powered action and science-based advocacy. In 2024/25 the charity deployed 61,819 native oysters across restoration projects, engaged 17,613 young people through education programmes, supported 15,064 Beachwatch volunteers submitting a record 1,256 litter surveys, and secured landmark policy wins including an £11.5 billion commitment to cut sewage overflows and UK-wide legislation on wet wipes and deposit return schemes. Income was £5.34 million.

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About

Ocean policy campaigning; Beachwatch citizen science beach clean programme; native oyster, kelp, seagrass and mussel restoration projects; Youth Ocean Network and Ocean-Friendly Schools; community ocean literacy; UK Overseas Territories conservation; Sea Champions volunteer network

Key Metrics

Key Metric 1 61,819 native oysters deployed across UK restoration projects in 2024/25
Key Metric 2 15,064 people participated in the Beachwatch beach clean programme, submitting 1,256 litter surveys — the highest in the programme's 31-year history
Key Metric 3 17,613 young people engaged through in-person or online youth programme sessions

Key Outcomes

  • £11.5 billion Ofwat investment package secured for storm overflow cuts in England and Wales following sustained MCS advocacy
  • All UK governments committed to ban plastic-containing wet wipes by 2028; Deposit Return Scheme legislation passed for England and Northern Ireland
  • 80p of every £1 received spent on charitable activities; 3,949 new volunteers joined the Sea Champions community

Geography

UK-Wide

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