Bob's team just got BIGGER with the most mega build EVER! Meet new team members Thud, Crunch, and former TV star Ace. They help Scoop, Muck, and Lofty clear the quarry to make room for an exciting new dam and reservoir. However, a rival contractor tries to undermine Bob and it's up to the team to save Spring City. Will they be up to this mega challenge or will it all end up washed away?
Lee Ingleby
Joanne Froggatt
Brian Cox
Dustin Demri-Burns
Blake Harrison
Steven Kynman
Iain Lauchlan
Nick Mercer
Ben Miles
Lucy Montgomery
Terry Mynott
Paul Panting
Jacob Scipio
Sam Swann
Colin Murdock
Daniel Bacon
Richard Ian Cox
Vincent Tong
Ian James Corlett
Nicole Oliver
Lee Tockar
Richard Newman
Peter New
Brian Drummond
Brian Dobson
Ryan Beil