The museum has benefited from 2 major bequests, the Gommersel Collection of Victorian paintings, mainly watercolours, and the Funduklian Bequest which consists of 20th-century art including work by Duncan Grant, Augustus John and Theodore Major.
The museum's 18th and early 19th-century works were strengthened by Enlightenment!, a Heritage Lottery funded 'Collecting Cultures' project. Through the project (2009 to 2013) the museum purchased work by William Marlow, John Webber and William Day as well as watercolours by lesser known artists and prints.
Alongside the HLF, acquisitions have been supported by the Art Fund, V&A Purchase Grant Fund, Beecroft Bequest and the Bingham Trust.