Episode Two - S3-E2
Visible crew/equipment: When Gavin turns up to Nessa and Dave's caravan and says "hiya," two cameramen are reflected in the car as he moves round it after closing the door.
Gavin & Stacey (2007)
1 visible crew/equipment mistake in season 3
Starring: Mathew Horne, Ruth Jones, Alison Steadman, Joanna Page
Episode Six - S1-E6
Continuity mistake: When Gavin and Stacey have their first dance, look carefully and you can see Nessa sat at a table behind them with other people. Seconds later, the camera moves and focuses on Nessa standing at the bar alone.
Trivia: The three main families in the show are named after British serial killers (West, Sutcliffe and Shipman).