The Commons form the largest continuous tract of open heath in Berkshire. The entire common is access land, an important green lung for the people of West Berkshire, and a precious SSSI for a rich variety of wildlife and flora. The Commission is its guardian and manager, with a General Duty under the Greenham and Crookham Commons Act 2002. West Berkshire District Council is the owner of the Commons, and the Berks Bucks and Oxon Wildlife Trust (BBOWT) provide the day to day maintenance and management of the Commons on behalf of the District Council, and working with the Commission. Both the District Council and BBOWT are represented on the Commission.