Theatre of the United Kingdom rise of satire in 1960s Britain. The Chichester Festival Theatre was Britain's first modern thrust stage theatre. It was inspired by the Festival Theatre of the Stratford Shakespeare Festival launched by Tyrone Guthrie in the Canadian city of Stratford, Ontario. The inaugural Artistic Director of the Chichester Festival was Sir Laurence Olivier, and it was at Chichester that the first National Theatre company was formed. Chichester's productions would transfer to the National Theatre's base at the Old Vic in London. The Theatres Act 1968 abolished the system of censorship of the stage that had existed in Great Britain since 1737.
The Old Vic Theatre director Sir Peter Hall arranged for the progressive folk-rock band Gryphon to première "Midnight Mushrumps", the fantasia inspired by Hall's own 1974 Old Vic production of "The Tempest" starring John Gielgud for which Gryphon had supplied the music. For two years prior to the departure of the National Theatre company, Toby Robertson, director of the Prospect Theatre Company, sustained a campaign that the Old Vic should make Prospect its resident company. For the Old Vic, Robertson's overtures proved increasingly hard to resist in the face of poor box office returns achieved by productions staged by other visiting companies; against