Mark Moraghan as Narrator (voice)

John Hasler as Thomas (voice)

Tina Desai as Ashima (voice)

Rasmus Hardiker as Philip (voice)

Keith Wickham as Edward / Henry / Gordon / James / The Fat Controller (voice)

Rufus Jones as The Flying Scotsman (voice)

Robert Wilfort as Samson (voice) / Judge (voice)

John Schwab as Vinnie (voice)

Nigel Pilkington as Percy (voice)

Teresa Gallagher as Various (voice)

Steven Kynman as Duck / Charlie / Porter / Dart / Paxton / Peter Sam (voice)

Joe Mills as Donald / Douglas / Oliver (voice)

Matt Wilkinson as Spencer / Stanley / Cranky / Kevin / The Dock Manager (voice)

Kerry Shale as Scruff / Diesel (voice)

David Bedella as Victor / Carlos (voice)

Bob Golding as Stephen / Sidney / Ivan (voice)

Tim Whitnall as Timothy / Mike (voice)

Tom Stourton as Rex (voice)

Jonathan Broadbent as Bill / Ben (voice)

Jonathan Forbes as Connor (voice)

Rebecca O'Mara as Caitlin (voice)

Rob Rackstraw as Various (voice)

Christopher Ragland as Percy (voice)