City Hall in London, the brutalist Derby Assembly Rooms and Swindon's Oasis Leisure Centre are among the UK's top 10 buildings under threat according to architectural campaigning charity Twentieth Century Society. Other buildings at risk include the Bull Yard shopping precinct in Birmingham, the listed Halls of Residence at the University of Hull and the Cressingham Gardens' housing estate in London. Above: the Derby Assembly Rooms features in the Top 10 Buildings at Risk List. Top image: Foster + Partners' City Hall is also on the list The list, which is released every two years aims to illuminate how numerous buildings of various architectural styles are currently under threat in the UK.