Cast[]
- Fireman Sam as Mr. Conductor (Ringo Starr)
- James as Mr. Conductor (George Carlin)
- Penny Morris as Stacy Jones
- Elvis Criddlington as Schemer
- Station Officer Steele as Billy Twofeathers
- Trevor Evans as Harry Cupper
- Dilys Price as Kara
- Ted Glenn (from Postman Pat) as Dan
- Bella Lasagne as Becky
- Sarah as Tanya
- Charlie Pringle (from Postman Pat) as Matt
- Pingu (from Pingu) as JB King
- Thomas (from TTTE) as Tito Swing
- Emily (from TTTE) as Didi
- Molly (from TTTE) as Grace the Bass
- Edward (from TTTE) as Tex
- James (from TTTE) as Rex
- Bill Thompson (from Postman Pat) as Schemee
- Sam Waldron (from Postman Pat) as Mayor Flopdinger
- Postman Pat (from Postman Pat) as Mr. Nicholas
- Miss Hubbard (from Postman Pat) as Vickie
- Pingi (from Pingu) as The Queen
- Major Forbes (from Postman Pat) as Hobart Hume
- Norman Price as Mr. Conductor's Evil Twin
- Bentley the Robot as Sledgebolt
- Lucy Selby (from Postman Pat) as Mr. Conductor's Sister
- PC Selby (from Postman Pat) as Barton Winslow
- George Lancaster (from Postman Pat) as Kit
Finding Nemo Characters as Thomas Characters:
- Marlin as Thomas
- Charlie as Edward
- Bloat as Henry
- Gill as Gordon
- Bubbles as James
- Nemo as Percy
- Bailey as Toby
- Gurgle as Duck
- Fluke as Donald
- Rudder as Douglas
- Oscar (from Shark Tale) as Oliver
- Anglerfish as Diesel
- Darla as Daisy
- Jenny as Mavis
- Nigel as Harold
- Squirt as Toad