Before the war, Ove Arup was on the Air Raid Precautions organising committee and he advised Finsbury Council on the provision of bomb shelters. During the war he published a number of papers on shelter policy and designs, mainly advocating reinforced concrete mass shelters, rather than the government policy of dispersing the population in small domestic shelters. Largely for political reasons most of his recommendations were never adopted, although some wealthy Londoners were able to build concrete shelters according to his design.