Major successes include Relatively Speaking, How the Other Half Loves, Absurd Person Singular, Bedroom Farce, A Chorus of Disapproval, The Norman Conquests, A Small Family Business, Henceforward . . ., Comic Potential, Things We Do For Love, and Life of Riley. Surprises was first presented at the Stephen Joseph Theatre, Scarborough, and subsequently at the the Minerva Theatre, Chichester in 2012.
In 2009, he retired as Artistic Director of the Stephen Joseph Theatre, where almost all his plays have been and continue to be first staged, after 37 years in the post. Knighted in 1997 for services to the theatre, he received the 2010 Critics' Circle Award for Services to the Arts and became the first British playwright to receive both Olivier and Tony Special Lifetime Achievement Awards.