(1976); and Pinero's comedy The Cabinet Minister (1977). In London, Denison played a wide range of roles during the 1970s. In 1970 he and Gray appeared in Three – a trio of one-act plays by Shaw, and then in Ibsen's The Wild Duck. The Stage commented: He appeared in The Tempest (1972 − as "a somewhat declamatory Prospero", according to one critic), and as Malvolio in Twelfth Night (1972 and 1978). and together with Gray and John Mills he starred in a William Douglas-Home comedy, At the End of the Day, at the Savoy in 1973, playing a thinly-disguised Edward Heath to the similarly fictionalised Harold and Mary Wilson of Mills and Gray. Gray and Denison appeared in a comedy, The Sack Race, in 1974, and later that year he played Mr Darling and Captain Hook in the 70th-anniversary production of Peter Pan, as he had long wanted to but other commitments had not until then allowed. In 1975 Denison was the only white member of the cast of The Black Mikado; he played Pooh-Bah in an adaptation of the original transplanted from Japan to the Caribbean. At the Old Vic in 1978 he played what The Stage called "an amusingly mouth-pursing, bewildered Mayor" in a revival of The Lady's Not for Burning, and appeared in the same season in Twelfth Night, as Malvolio, and in Ivanov as Lebedev. His last stage appearance of the 1970s was in the National Theatre's production of Alan Ayckbourn's Bedroom Farce, in which he played Ernest to Gray's Delia. 1980s Of the four tours Denison made with Gray between 1980 and 1989, two were in Britain and two were of the Near and Far East. The British tours were in Douglas-Home's The Kingfisher (1980–81) and Enid Bagnold's The Chalk Garden (1989). The eastern tours were in Ayckbourn's Relatively Speaking (1981) and Ray Cooney and John Chapman's There Goes the Bride (1985). In England they played at Windsor in Fry's Venus Observed (1980) and the farce See How They Run (1986). In the West End they appeared in Ronald Millar's A Coat of Varnish, and Shaw's Captain Brassbound's Conversion (1982); The School for Scandal (1982 and 1983) as Sir Oliver Surface and Lady Sneerwell; and Fry's Ring Round the Moon (1985 and 1988). Denison appeared without Gray in a revival of Shaw's The Apple Cart (Haymarket,1986, playing the prime minister to Peter O'Toole's King Magnus);