Since 2008, Maier has been a resident judge at the Karaoke Circus shows, both in London and at the Edinburgh Fringe Festival.
Baron Gilvan has also performed as a spectral roadie for David Devant, and is a resident judge at Karaoke Circus.
Monty Python's Flying Circus | Ringling Bros. and Barnum & Bailey Circus | circus | Karaoke | Circus | Circus Maximus | Ringling Brothers Circus | Piccadilly Circus | Karaoke Revolution | JoJo's Circus | Circus of Horrors | Buddy's Circus | The Rolling Stones Rock and Roll Circus | The Invisible Circus (film) | National Institute of Circus Arts | karaoke | Gandalf Murphy and the Slambovian Circus of Dreams | Finsbury Circus | The Invisible Circus | Ricketts' Circus | Piccadilly Circus tube station | Oxford Circus | Holborn Circus | Electric Circus | Buddy's Circus#Release date discrepancy | Big Apple Circus | Vampire Circus | The Family Circus | Savage Circus | Psycho Circus |