Kenneth Gilbert More was born on 20 September 1914 at Gerrards Cross in Buckinghamshire, the son of Charles Gilbert More, a former Royal Naval Air Service pilot, and Edith Winifred Watkins, whose father was a solicitor in Cardiff. Although More himself was raised in England and the Channel Islands, his mother's Welsh family background has long been recognised as his personal connection to Wales.
More trained as a civil engineer before turning to acting, working his way up through provincial repertory theatre and revue during the 1930s. He served in the Royal Navy during the Second World War, seeing action in the Pacific, before resuming his stage and film career after 1945.
He became a major British film star in the 1950s, achieving popular success in the comedy Genevieve (1953) and Doctor in the House (1954), before taking his best-remembered role as the legless RAF pilot Douglas Bader in Reach for the Sky (1956), for which he won the BAFTA Award for Best British Actor. He also appeared as Second Officer Charles Lightoller in the Titanic drama A Night to Remember (1958).
More's career was crowned by his performance as Young Jolyon Forsyte in the BBC's television adaptation of The Forsyte Saga (1967), one of the most-watched television dramas of its era both in Britain and abroad. He continued acting until shortly before his death in London on 12 July 1982.