Hillingdon Outdoor Activities Centre (HOAC) is run as a partnership between the London Borough of Hillingdon and the Colne Valley Youth and Community Association, which is a charity registered as a youth education and training facility. The Centre is registered under the Adventure Activities Regulations 1996. HOAC consists of a 45 acre lake surrounded by woodlands and fields. It is set in an area of considerable natural beauty in the green belt of West London and is easily accessible via the motorway network.