The British Museum’s A History of the World exhibition, designed in partnership with the BBC and branded by Fallon, and the Victoria & Albert Museum’s Ceramics Study Galleries, redeveloped by Opera Amsterdam, have both been named.
Refurbishment and restoration projects include Leighton House in London, Mostyn art gallery in Llandudno, the Polar Museum at the University of Cambridge, and the Hertford Museum.
The Hertford Museum has had its Grade II-listed building refurbished by Architects Co Partnership, with exhibition design carried out by RFA Design and The Workhaus.
Other longlisted groups are the People’s History Museum in Manchester, the new Robert Burns Birthplace Museum in Alloway, Scotland, the Roman Baths Museum in Bath, and the Yorkshire Museum in York.
An independent panel of judges chaired by Michael Portillo has decided the longlist, which will be reduced to a shortlist of four museums on 19 May before the winner is announced on 15 June.
A second prize, the Clore Award for Museum Learning, celebrating education initiatives in museums, has also been longlisted and will be announced on 15 June.
This is the fourth year the prize has been sponsored by national fundraising charity the Art Fund.