Martin Compston joins Celebrity Race Across the World stars Molly Rainford, Tyler West, Dylan Llewellyn and his mum Jackie. Presented by Alex Jones and Clara Amfo.

It's the One Big Thank You Christmas special with JB Gill and Roman Kemp in the studio. Alex Jones surprises someone very deserving who gets to switch on the iconic Regent Street Christmas lights, plus we have a special Disney-themed One Big Thank You. And singer Jamie Cullum performs a Christmas song.