Wikipedia
Improverts
The Improverts is a long-running improvisational comedy troupe put on since its inception by the Edinburgh University Theatre Company which primarily performs at the Bedlam Theatre, Edinburgh. They perform every Friday night at 10.30 pm during Edinburgh University's term time and every night during the Edinburgh Festival Fringe at half past midnight.
They are notable for being, at 27 years, the Edinburgh Fringe's longest running improvisation show. Their trademark fast-paced short-form games and slapping of the stage have since been adopted by similar student groups around the UK.