Derek/Thomas (Version 3)

Cast:

 * Derek as Thomas
 * Salty as Edward
 * Dennis as Henry
 * BoCo as Gordon
 * Diesel as James
 * Duck as Percy
 * Oliver as Toby
 * Percy as Duck
 * Sir Handel and Peter Sam as Donald and Douglas
 * Toby as Oliver
 * James as Diesel
 * Bash and Dash as Bill and Ben
 * Gordon as BoCo
 * Mavis as Daisy
 * Daisy as Mavis
 * Bertie as Stepney
 * Lady as Emily
 * Stepney as Bertie
 * Edward as Salty
 * Fergus as Harvey
 * Splatter and Dodge as 'Arry and Bert
 * Harvey as Fergus
 * Victor as Skarloey
 * Kevin as Rheneas
 * Donald as Sir Handel
 * Douglas as Peter Sam
 * Toad as Rusty
 * Smudger as Duncan
 * Bertram as Duke
 * Duke as Bertram
 * Ivo Hugh as Freddie
 * Mighty Mac as Themselves
 * Luke as Arthur
 * Emily as Lady
 * Bulgy as Diesel 10
 * 'Arry and Bert as Splatter and Dodge
 * Sir Topham Hatt as Himself
 * Trevor as Terence
 * George as Trevor
 * Rusty as Toad
 * Thomas as Derek
 * Diesel 10 as Bulgy
 * Isobella as Elizabeth
 * Terence as George
 * Hiro as Murdoch
 * Mallard as Spencer
 * Madge as Caroline
 * Fred Pelhay as S.C. Ruffey
 * Mr. Percival as Himself
 * Rocky as Harold
 * Molly as Rosie
 * Troublesome Trucks as Themselves
 * Duncan as Smudger
 * Captain as Bulstrode
 * Rosie as Molly