James Corden spills on Gavin and Stacey and 'opens huge can of worms' before Christmas finale
![James Corden spills on Gavin and Stacey and 'opens huge can of worms' before Christmas finale](https://i2-prod.mirror.co.uk/incoming/article32749376.ece/ALTERNATES/s615/0_GAVIN-AND-STACEY-GENERICS.jpg)
James Corden has shared secrets about the script for the eagerly anticipated finale of hit sitcom Gavin and Stacey, which is set to air on BBC on Christmas Day