The Missionary (1982)

Synopsis
Michael Palin wrote and stars in this comedy as The Reverend Charles Fortescue, an unassuming missionary called back to England after spending ten years in Africa teaching children in a native village. Upon arriving in London, he finds that his new assignment is to take charge of a slum mission for prostitutes. He obtains money for the running of the mission from a wealthy woman, Lady Ames (Maggie Smith), whom he meets on the boat sailing to England from Africa. Lady Ames guarantees Fortescue the money on the condition that he take it upon himself to add a little spice to her dormant sex life. ~ Paul Brenner, All Movie Guide