This case study uses a value transfer methodology to assess the costs and benefits of possible changes in ecosystem services provided by the restoration of Culm grasslands in Devon and Cornwall. It provides a rapid assessment of the relative benefits and costs of the Working Wetlands Project: an agri-environmental project operating between Exmoor and Dartmoor. The project enhances conservation by supporting agri-environment scheme applications that seek to protect and expand coverage of Culm grasslands. The key ecosystem service that will benefit from the Working Wetlands project is biodiversity/habitats. A Natural England report summarises the likely effects the Working Wetlands project may have on the ecosystem services provided in the area.