James Fleet, Jenny Eclair, Jamie Laing and Sunetra Sarker take to the wheel to make a slab-built illuminated Christmas scene, and see who can throw the most mulled wine tumblers.
Hugh Dennis, Sophie Duker, Alice Levine and Joe Swash take on some festive firing as they hand-build a Christmas birdhouse.
This year, the celebrity contestants joining the judges at Gladstone Pottery in Stoke-on-Trent are comedian Babatunde Aleshe, actor Tom Rosenthal, TV presenter Rachel Riley and singer and actor Martin Kemp.