Gavin & Stacey claimed a special episode was possible, citing it as a Hallowe'en or Bonfire Night special rather than a Christmas special, stating like he'd "love to see Gavin and Smithy go trick or treating". Speaking in October 2013, Mathew Horne said he would love to star in a fourth series, but admitted it would be a "risk" to do another series in case it didn't live up to expectations. James Corden said in November 2013 that he would love to work with Ruth Jones again but he didn't know if it would be to make more Gavin and Stacey or something
Gavin & Stacey Eve special was an hour long. The third series reverted to six episodes and began on 26 November 2009, with the last two episodes of the series and show being aired on Christmas Day 2009 and New Year's Day 2010. The BBC has also broadcast several documentaries alongside the show, examining the making of the show and showcasing a selection of 'out-takes' from the filming. The idea for the show occurred to actor James Corden during a wedding reception, and he then developed the idea with co-writer Ruth Jones, whom he had met during the filming of ITV drama "Fat