C3 International Limited is a UK-based environmental consultancy with international experience across marine and coastal environments.
Coral reefs and associated habitats Marine Protected Areas Small scale tropical fisheries Endangered Marine Species Our team of consultants and associates have experience from all over the world and we have particularly strong capacity in the western Indian Ocean, the Middle East, the Philippines and the Pacific Islands.
Management and monitoring programmes Project evaluations and grant proposal reviews Environmental and Social Impact Assessment NGO management and fundraising Cross-cutting issues such as gender, climate change and socioeconomics Communications and Awareness programmes Artificial Reef Structures and Coral Relocation projects
C3 International Limited provides specialist technical advice, scientific assessments and project development support to governments, international organisations and conservation partners. Selected assignments include:
Marine Conservation and Programme Evaluation | NIRAS / Defra
Provided marine science advisory services under the UK’s Ocean Country Partnership Programme (OCPP), including monitoring and evaluation, assessment methodologies, evidence synthesis and technical reporting, with work relating to Ghana and the Maldives.
Sustainable Fisheries Assessments | Marine Stewardship Council
Undertook independent scientific peer reviews of fisheries assessments, examining stock status, ecosystem impacts, fisheries management and compliance with MSC sustainability requirements.
Indigenous Marine Managed Areas | Philippines
Provided technical and project management support to the Darwin Initiative-funded programme led by C3 Philippines, supporting the establishment and management of 44 Indigenous Marine Managed Areas covering approximately 1,290 hectares in Palawan.
Blue Carbon and Conservation Finance | WEF-supported Project
Contributed specialist technical expertise to a blue-carbon assignment supported by World Economic Forum funding, working as a subcontractor to assess opportunities for nature-based solutions and conservation finance.
Coral Reef Monitoring and Assessment | JNCC / GCRMN
Supported coral reef monitoring and assessment work, contributing scientific expertise and technical inputs to strengthen the evidence base for marine conservation planning.
Turning marine conservation into investable opportunities
C3 Blue Finance Solutions bridges the gap between community-led marine conservation and sustainable investment. We help transform promising conservation initiatives into investment-ready projects that deliver measurable environmental, social and financial benefits.
Our approach combines ecological and commercial due diligence, ensuring that proposed investments are scientifically credible, financially viable and responsive to local community priorities.
We focus on developing and aggregating investment opportunities in marine protected areas, sustainable fisheries, blue carbon, coastal restoration and reef-positive livelihoods.
Drawing on the C3 Network’s experience across the Pacific, Southeast Asia and western Indian Ocean, we aim to build scalable portfolios that connect conservation outcomes with long-term financing.
Contact:
Work with C3 International
We welcome enquiries from governments, international organisations, NGOs, research institutions and private-sector partners seeking specialist expertise in marine and coastal environments.
Whether you are developing a new project, seeking technical advice or exploring opportunities for sustainable blue finance, we’d be pleased to discuss potential collaborations.
C3 International Limited is registered as a Limited Company in England and Wales, registration number 11233261