Mark Moraghan
Narrator (voice)

John Hasler
Thomas (voice)

Darren Boyd
Theo (voice)

Sophie Colquhoun
Frankie (voice)

Hugh Bonneville
Merlin (voice)

Lucy Montgomery
Lexi / Troublesome Trucks (voice)

Jim Howick
Hurricane (voice)

Colin McFarlane
Beresford (voice)

Rasmus Hardiker
Philip (voice)

Keith Wickham
Edward / Henry / Gordon / Sir Topham Hatt / Workmen (voice)

Nicola Stapleton
Rosie (voice)

Teresa Gallagher
Emily / Annie and Clarabel (voice)

Rob Rackstraw
James / Toby / Troublesome Trucks (voice)

Christopher Ragland
Troublesome Trucks (voice)

Nigel Pilkington
Percy / Trevor (voice)

John Schwab
Ulli / Other Mainline Diesel (voice)

Steven Kynman
The Knapford Station Worker / Steelworks Worker (voice)

David Bedella
Victor (voice)

Kerry Shale
Troublesome Trucks (voice)

William Hope
Two Troublesome Truck (voice)