Suggestions by @jdfitzgerald

Colin McFarlane

as Murdoch the orange engine in Fan Casting More Thomas Characters (Classic series only)

Matt Lucas

as Fergus the railway traction engine in Fan Casting More Thomas Characters (Classic series only)

Eddie Izzard

as Arthur the large tank engine in Fan Casting More Thomas Characters (Classic series only)

Kelly Macdonald

as Emily the sterling engine in Fan Casting More Thomas Characters (Classic series only)

Freddie Highmore

as Ben in Fan Casting More Thomas Characters (Classic series only)

Daniel Radcliffe

as Bill in Fan Casting More Thomas Characters (Classic series only)

Steve Carell

as Sir Handel/Falcon in Fan Casting More Thomas Characters (Classic series only)

Richard Hammond

as Oliver The Western Engine in Fan Casting More Thomas Characters (Classic series only)

Edward Glen

as Peter Sam/Stuart in Fan Casting More Thomas Characters (Classic series only)

Rob Brydon

as Rheneas in Fan Casting More Thomas Characters (Classic series only)

Jim Carrey

as James the red engine in Fan Casting More Thomas Characters (Classic series only)

Michael Caine

as Toby the steam tram in Fan Casting More Thomas Characters (Classic series only)

Ewan McGregor

as Edward the blue engine in Fan Casting More Thomas Characters (Classic series only)

Taron Egerton

as Thomas the tank engine in Fan Casting More Thomas Characters (Classic series only)

Mel Gibson

as Trevor The Traction Engine in Fan Casting More Thomas Characters (Classic series only)

Tim Curry

as Diesel (Devious Diesel) in Fan Casting More Thomas Characters (Classic series only)

Malcolm McDowell

as Diesel 10 in Fan Casting More Thomas Characters (Classic series only)

Steven Kynman

as Duck The Great Western Engine in Fan Casting More Thomas Characters (Classic series only)

Eric Idle

as Toad the Brakevan in Thomas and the Magic Railroad (2001)

Steve Carell

as Sir Handel in Thomas and the Magic Railroad (2001)