Corrected entry: When Dawn and Pete are arguing in the pub in series 1 she says he's a chartered surveyor. In a later episode Smithy is discussing how he never knew Pete was a butcher.
Gavin & Stacey (2007)
1 corrected entry in season 1
Starring: Mathew Horne, Ruth Jones, Alison Steadman, Joanna Page
Episode Six - S1-E6
Other mistake: After the wedding when everyone is outside, Smithy says he has forgotten the maps that gave directions to the reception. Bryan says he can use the sat nav in his Picasso and tells everyone to follow him. But he was driven to the church in the Bentley with Stacey, so his car wouldn't have been there.
Trivia: The three main families in the show are named after British serial killers (West, Sutcliffe and Shipman).
Correction: This is the joke - Pete and Dawn are meeting Seth for a proposed threesome, and having been seen at the restaurant and not having got their stories straight when asked where they met him, Dawn says "at the butchers" and Pete says "at work". Hence the comment to Pete "I didn't know you were a butcher".