Mark Moraghan as Narrator (voice)

John Hasler as Thomas (voice)

Eddie Redmayne as Ryan (voice)

John Hurt as Sailor John (voice)

Jamie Campbell Bower as Skiff (voice)

Olivia Colman as Marion (voice)

Tom Stourton as Rex (voice)

Steven Kynman as Duck (voice)

Nathan Clarke as Alfie (voice)

Teresa Gallagher as Emily / Daisy / Annie / Clarabel (voice)

Keith Wickham as Edward / Henry / Gordon / James / Percy / Salty / Bert / Bertie / Sir Topham Hatt (voice)

David Bedella as Victor (voice)

Rob Rackstraw as Toby (voice)

Tim Whitnall as Mike / Oliver (voice)

Jonathan Broadbent as Bill / Ben (voice)

Matt Wilkinson as Cranky / Kevin (voice)

Joe Mills as Donald / Douglas / Oliver / Toad (voice)