A Big Lego Christmas
The eight teams compete to create a spectacular brick banquet and at least one supersized masterpiece for the banquet table, including duck and prawn toast, hog roast and a gravity defying cuppa
In this episode, the teams have to build a funfair with at least one spectacular supersized mechanical ride. And they have to build a vehicle out of the blue. Richard Osman guest judges.
The remaining teams head for the great outdoors, competing to build the best brick display in an Essex wood. There's even a Madagascan crocodile. Guest judge is comedian Bill Bailey.
It's the final stage of the contest and the brick builds include a robot with an ostrich head and an alien from the planet Zorg. Guest judge is comedian Dara Ó Briain.