The group is made up of 35 farmers and land managers who are working together to improve wildlife and biodiversity on a landscape scale and covers an area of approximately 9,230 hectares around the Winchester area. They are doing this along side producing food, improving the soil and water quality.

The Winchester Downs Cluster is an independently funded group set up in 2018. In the beginning it was funded through the DEFRA Facilitation Fund, but 2022 moved to member funded model. The group meets regularly throughout the year to discuss a wide range of topics through farm walks, wildlife surveys and educational talks from an array of different experts.