Suggestions by @desfitzgerald

Jane Horrocks

as Madge in Thomas and Friends (If it was owned by Hasbro)

Score: +4

Elton John

as Luke in Thomas and Friends (If it was owned by Hasbro)

Score: 0

Tim Whitnall

as Dennis in Thomas and Friends (If it was owned by Hasbro)

Score: +3

Adam Howden

as Billy in Thomas and Friends (If it was owned by Hasbro)

Score: +2

Julie Walters

as Old slow coach in Thomas and Friends (If it was owned by Hasbro)

Score: +1

Daniel Radcliffe

as Whiff in Thomas and Friends (If it was owned by Hasbro)

Score: +2

Alan Marriott

as Trevor in Thomas and Friends (If it was owned by Hasbro)

Score: 0

Eddie Izzard

as Arthur in Thomas and Friends (If it was owned by Hasbro)

Score: +3

John Ratzenberger

as Rocky in Thomas and Friends (If it was owned by Hasbro)

Score: +2

Jack Black

as Diesel 10 in Thomas & Friends: Misty Island Rescue

Score: +3

Daniel Radcliffe

as Whiff in Thomas & Friends: Misty Island Rescue

Score: +3

Michael Keaton

as Spencer in The beast of sodor

Score: +2

Simon Pegg

as Bertie in Percy’s new whistle

Score: +1

Martin Freeman and Nick Frost

as Arry and Bert in Percy’s new whistle

Score: +2

Jack Black

as Percy in Percy’s new whistle

Score: +1

Joanna Lumley

as Elizabeth in Thomas the tank engine live action series

Score: +2

Edward Glen

as Peter sam in Thomas the tank engine live action series

Score: +3

Helena Bonham Carter

as Daisy The Green Diesel Rail-Car Engine in Steam Team to the Rescue

Score: +3