Commissioned in the
British Army, he reached the rank of
Lieutenant-Colonel of the
Intelligence Corps before the age of 30, and later was deployed to the
British Embassy in
Vienna. He moved to London after the birth of his fourth son, and joined the
Central Office of Information. He became head in turn of the Film, Radio and Book divisions. He succeeded to the dukedom and other titles upon the death of his cousin
Osborne Beauclerk, 12th Duke of St Albans in 1964, after which he left the Central Office of Information. With his second wife, he ran the Upper Grosvenor Gallery in Mayfair from 1967 until 1972. He attempted to rebuild a family fortune through a series of other failed ventures, which led to losses and an accusation of mishandling of share dealing in relation to the company Grendon Securities. In the 1970s, St Albans moved to
Vence in
France, before becoming a resident of
Monaco. which he gave to charity. ==Marriages and issue==