John's television appearances are listed below in chronological order.
- Live and Kicking/Electric Circus (1993/1994)
- The Movie Game (1994)
- Central Park West (1995)
- 5's Company (1997)
- Hey Mr Producer (1998)
- Titans (2000)
- An evening with the Boston Pops (2003)
- 100 Greatest Musicals (2003)
- Doctor Who (2005)
- Loose Women (2005-2007)
- New Year Live (2005/2006)
- The Sound of Musicals (2006)
- GMTV (2006-2007)
- Dancing on Ice (2006)
- This Morning (2006-2008)
- CBeebies Bedtime Hour (2006)
- How Do You Solve A Problem like Maria? (2006)
- Keys to the Castle (2006)
- Torchwood (2006-2008)
- Sunday AM (2006)
- Something For The Weekend (2006)
- BBC Breakfast (2006-2008)
- Never Mind The Buzzcocks (2006)
- Eight Out Of Ten Cats (2006)
- Royal Variety Performance (2006)
- Heaven and Earth (2006)
- The Big Finish (2006 and 2007)
- E! Entertainment - Live from the Red Carpet (2007)
- Al Murray's Happy Hour (2007 and 2008)
- The National Lottery (2007 and 2008)
- A Taste of My Life (2007)
- Making Your Mind Up (2007 and 2008)
- The Richard and Judy Show (2007)
- The Weakest Link : Doctor Who Special (2007)
- The Charlotte Church Show (2007)
- Any Dream Will Do (2007)
- Saturday Kitchen Live (2007)
- Friday Night with Jonathan Ross (2007 and 2008)
- Blue Peter - Doctor Who Special (2007)
- Would I Lie To You? (2007)
- Animal Rescue Live (2007)
- The Kids Are All Right (2007)
- Friday Night Project (2007)
- Have I Been Here Before? (2007)
- Children in Need (2007)
- Strictly Come Dancing (2007)
- This Week (2007)
- The One Show (2007)
- The Big Questions (2007)
- Scotland Today (2007)
- When Maria Met Joseph (2007)
- Christmas Voices (2007)
- The Alan Titchmarsh Show (2008)
- I'd Do Anything (2008)
- Hotel Babylon (2008)
- The Paul O'Grady Show (2008)
- Ready Steady Cook (2008)
- How Do You Solve A Problem Like Maria? (2008)
- Making Of Me (2008)