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 special involves Stacey's family, along with Nessa and her partner, Dave Coaches (Steffan Rhodri), spending Christmas with Gavin's parents. Gavin reveals that he has found a job in Cardiff, which at first causes upset for Pam and Smithy, but they both learn to accept it. Gavin later admits to Smithy that he is moving to Barry with Stacey in order to save his marriage. Smithy also gets upset when he feels that Dave, who lives with the baby, Neil, is replacing him as a father. Smithy is furthermore unhappy after Dave proposes to Nessa (with the ring enclosed in a