Ever since the Christmas special for 'Gavin and Stacey' was announced, there's been plenty of speculation as to what's occurin' in the episode.

As you'd expect, there's plenty of things occurin' in the trailer, with Rob Brydon's Uncle Byrn messing up the Christmas dinner, plenty of off-key singing to Elton John, not to mention Nessa back in action as ever.

The Christmas special episode airs on BBC One at 8.30PM, with the trailer showcasing the full cast reunion in full swing.

Bang tidy, that is. Take a look.