Sarah Jane Smith (9 episodes, 2002-2006)
Josh Townsend (8 episodes, 2002-2006)
Natalie Redfern (6 episodes, 2002-2006)
Maude (4 episodes, 2002-2006)
DI Morrison / Professor Vodancski / Taxi Driver (4 episodes, 2002)
Sir Donald Wakefield (4 episodes, 2005-2006)
Newsreader (4 episodes, 2005-2006)
Mission Control / Taxi Driver / Wong Chu (3 episodes, 2002-2006)
Harris (3 episodes, 2002)
DC Johnson / Mr. Venables / Newsreader (3 episodes, 2002)
Ellie Martin (3 episodes, 2002)
The Keeper (3 episodes, 2005-2006)
Will (3 episodes, 2005-2006)
Dexter (3 episodes, 2005-2006)
Mr. Hedges / Munro (2 episodes, 2002-2006)
Claudia Coster (2 episodes, 2002)
Additional Voices / Kimmel (2 episodes, 2005-2006)
Doctor Brandt (1 episode, 2002)
Miss Winters (1 episode, 2002)
Abbotly (1 episode, 2002)
The Squire (1 episode, 2002)
Bank Robber (1 episode, 2002)
James Carver (1 episode, 2002)
Jack McElroy (1 episode, 2002)
Will Butley (1 episode, 2002)
Meg Hawkins (1 episode, 2002)
Mr. Sharpe (1 episode, 2002)
Nurse Jephson (1 episode, 2002)
Read (1 episode, 2002)
Wendy Jennings (1 episode, 2002)
Rev Gosforth (1 episode, 2002)
Mrs. Lythe (1 episode, 2002)
Josh Townsend (1 episode, 2002)
Yolande Benstead (1 episode, 2002)
Professor Edmons (1 episode, 2005)
Luca (1 episode, 2005)
Morgane (1 episode, 2006)
Emily (1 episode, 2006)
Jack (1 episode, 2006)