Peter Chester, sometimes credited as simply Pete Chester, was the credited best boy on nearly all episodes of the first five series of the BBC Wales version of Doctor Who.
- 42
- The Age of Steel
- Aliens of London
- Army of Ghosts
- Bad Wolf
- Boom Town
- The Christmas Invasion
- Dalek
- Daleks in Manhattan
- The Doctor Dances
- The Doctor's Daughter
- Doomsday
- The Empty Child
- The End of Time
- The End of the World
- Evolution of the Daleks
- Father's Day
- Fear Her
- The Fires of Pompeii
- Forest of the Dead
- The Girl in the Fireplace
- Gridlock
- The Idiot's Lantern
- The Impossible Planet
- Journey's End
- Last of the Time Lords
- The Lazarus Experiment
- The Long Game
- Midnight
- New Earth
- The Next Doctor
- The Parting of the Ways
- Partners in Crime
- Planet of the Dead
- Planet of the Ood
- The Poison Sky
- Rise of the Cybermen
- Rose
- The Runaway Bride
- The Satan Pit
- School Reunion
- The Shakespeare Code
- Silence in the Library
- Smith and Jones
- The Sontaran Stratagem
- The Sound of Drums
- The Stolen Earth
- Tooth and Claw
- The Unicorn and the Wasp
- The Unquiet Dead
- Utopia
- Voyage of the Damned
- The Waters of Mars
- World War Three