It looks like Gavin and Stacey: The Finale could be in for a mad dash in order to wrap up production in time for the Christmas Day special, with filming yet to kick off. James Corden, 45, co-creator and star of the much-loved BBC Three sitcom alongside Ruth Jones, 57, is set to reprise his role as Smithy for the show's final festive hurrah, and he's confessed that the timeline is seriously snug.