Bushey Museum and Art Gallery's art collection is the largest in Hertfordshire and is mainly from the nineteenth and twentieth centuries, with special interest in the Monro Circle of artists, Sir Hubert von Herkomer, Lucy Kemp-Welch and the pupils of their Art Schools and other Bushey art schools. Archives relating to the collection are held in the Local Studies Centre.

The Museum Trust was founded in 1983 with the aim to collect and safeguard the very considerable artistic heritage of Bushey. Whilst the majority of works have been gifts or bequests, the many purchases could not have been possible without generous assistance from grant-funding bodies. The Friends of Bushey Museum have been vital to the growth of the collection and providing essential support to this volunteer-run Museum.