[2] He named it Theatresports after the form of competitive improvisation developed by director Keith Johnstone in Calgary, Alberta, Canada in 1976.
As the show grew in popularity the name was changed, during the Edinburgh Festival Fringe, (for copyright reasons) to Impro-Vegetables and then finally, in the 90s, to The Improverts.
The Improverts was adopted as a permanent, year-round name from September 1997 onwards.
The troupe provides free weekly workshops in improvisation for the general public in order to attract new talent to the group.
[4] Carrying on the teachings of Keith Johnstone, the show's format has changed over time, but stayed within the short-form sketch mould similar to TV's Whose Line is it Anyway?.