Steven Kynman / Duck /  Slip Coach (voice)
Michael Legge / Luke (UK & US) (voice)
Clive Mantle / Gator (UK & US) (voice)
Joe Mills / Oliver (UK & US) (voice)
Rebecca O'Mara / Slip Coach (UK & US) (voice)
Kerry Shale / Henry (US) /  Gordon (US) /  James (US) /  Diesel (UK) /  Sir Topham Hatt (US) /  Mr. Percival (US) (voice)
Martin T. Sherman / Thomas (US) /  Percy (US) /  Diesel (US) (voice)
Ben Small / Thomas (UK) /  Rheneas (UK & US) /  Owen (UK & US) (voice)
Tom Stourton / Duncan (UK & US) (voice)
Tim Whitnall / Reg (UK & US) (voice)
Keith Wickham / Edward (UK) /  Henry (UK) /  Gordon (UK) /  James (UK) / Percy (UK) /  Salty (UK & US) /  Skarloey (UK & US) (voice)
Keith Wickham / The Fat Controller (UK) /  The Thin Controller (UK) /  Gator's Driver (UK) /  Steamworks Worker (UK) /  Passengers (UK & US) (voice)
Matt Wilkinson / Rusty (UK & US) /  Rocky (UK) /  Cranky (UK) /  The Dock Manager (UK) (voice)
Glenn Wrage / Cranky (US) /  Gator's Driver (US) /  Steamworks Worker (US)(voice)