• Postman Pat as Mr. Conductor (Ringo Starr)
  • George Lancaster as Mr. Conductor (George Carlin)
  • Sara as Stacy Jones
  • Mr. Jeff Pringle as Schemer
  • Alf Thompson as Billy Twofeathers
  • Peter Fogg as Harry Cupper
  • Dorothy Thompson as Kara
  • Ted Glenn as Dan
  • Doctor Gilbertson as Becky
  • Mrs. Pottage as Tanya
  • Julian as Matt
  • Noddy (from Noddy's Toyland Adventures) 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 as Schemee
  • Sam Waldron as Mr. Nicholas
  • Miss Hubbard as Vickie
  • Tessie Bear (from Noddy's Toyland Adventures) as The Queen
  • Major Forbes as Tucker
  • Norman Price (from Fireman Sam) as Mr. Conductor's Evil Twin
  • Bentley the Robot (from Fireman Sam) as Sledgebolt
  • Mrs. Goggins as Mr. Conductor's Sister
  • PC Selby as Barton Winslow
  • Oakie Doke (from Oakie Doke) as Kit

South Park Characters as Thomas Characters

  • Stan Marsh as Thomas
  • Randy Marsh as Edward
  • Mr. Garrison as Henry
  • Chef as Gordon
  • Kyle Broflovski as James
  • Kenny McCormick as Percy
  • Mr. Mackey as Toby
  • Craig Tucker as Duck
  • Terrance and Phillip as Donald and Douglas
  • Clyde Donovan as Oliver
  • Eric Cartman as Diesel
  • Jimmy Valmer and Timmy Burch as Bill and Ben
  • Gerald Broflovski as Boco
  • Shelly Marsh as Daisy
  • Bebe Stevens as Mavis
  • Mr. Hankey as Bertie
  • Gregory of Yardale as Bulgy
  • Damien as George
  • Saddam Hussein as D261
  • Scott The Dick as The Spiteful Breakvan
  • Numbuh 1 (from Codename: Kids Next Door) as Sir Topham Hatt

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