In 1978, he moved to the Diocese of London where he had been appointed Dean of St Paul's Cathedral. He organised and presided at the wedding service of Prince Charles and Lady Diana. He was in charge of the July 1982 'Victory Service' following the Falklands War, and attempted to include a Spanish-language translation of the Lord's Prayer into the service. He retired from full-time ministry in 1987 and was appointed Dean Emeritus.