Ars Nova presents British Invasion: The U.K. Stars of "Whose Line Is It Anyway?" The show features Steven Frost, Jim Sweeney, Steve Steen, Andy Smart and Richard Vranch. After Monty Python, but before Drew Carey, there was a comedy revolution. Stephen Frost revitalized improv and inspired a whole new generation of British comedians. The British cast of Whose Line Is It Anyway? has paved the way for comedians such as Sacha Baron Cohen (Borat) and Ricky Gervais (The Office).