Episode One - S1-E1
Visible crew/equipment: The shadow of the camera falls across the table as it moves towards Stacey when she is on the phone to Nessa asking her if she wants an omelette.
Episode One - S1-E1
Revealing mistake: When Gavin and Stacey meet, look at the people all around them in Leicester Square - many of them are stood watching the filming.
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.
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.
Episode Six - S1-E6
Continuity mistake: At the reception, Dawn is talking to Pam and Gwen about the fact that she and Pete's sex-life is dead. Then, Smithy taps on a glass to indicate the speeches beginning, but as the glass is being tapped Smithy is in the shot with his blazer on, talking to Bryn. Then the shot pans over to the other end of the table, and Smithy is suddenly stood up with his blazer off.
Episode One - S2-E1
Continuity mistake: When Gavin and Stacey arrive at Mick and Pam's house in the Saab, the car stays on the drive. A few minutes later, Bryn appears in his Citroen into the same place on the drive and the Saab has moved to the space in front of the house.
Episode Two - S2-E2
Continuity mistake: Nessa goes home to Pam's house along with Stacey and Gwen, and in that scene you can see the tattoo on her arm of the Welsh dragon. If you focus enough you can see the dragon only has 3 legs, whereas the Welsh dragon has 4 legs, as does her tattoo usually. Both writer Ruth Jones and director Christine Gernon confirmed this on an outtakes special.
Episode Two - S2-E2
Revealing mistake: When Pam opens the door to Gavin Mick Bryn and smithy after smithy went to the driving range you can see 2 Welsh dragons on the mural behind Pam. Even though Pam and Mick's house is filmed in Wales they live in Essex in the show, in England.
Episode Four - S2-E4
Continuity mistake: As Mick pulls into the driveway his Saab reg is P650 OHK. Later in the same episode it's changed to P361 NVM on several occasions. (00:03:00 - 00:09:00)
Episode Four - S2-E4
Factual error: The BBC One channel ident introducing the Six o'clock News is a real one, featuring swimming hippos, but in real life such a comical ident would never be used before a news bulletin.
Continuity mistake: The scene when Edna comes in, Dave has a plate of food in one hand. Dave says "All right Edna, how's it going, all right?" It cuts to Edna sitting down and you see Dave with his hands suddenly in his pockets.
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.
Episode Six - S3-E6
Factual error: Dave and Nessa's wedding is meant to be on 13th June and at the end supposedly 6 months later Nessa, Gavin and Stacey are sat on the sea wall in beautiful sunshine in summery clothes when it should be middle of December.
Episode Six - S3-E6
Continuity mistake: When Smithy is driving to Wales for the wedding, the head restraints are missing from the front seat. The next shot is an exterior shot of the car and the head restraints are back in.
Episode Six - S3-E6
Continuity mistake: When Gavin and Smithy are side-by-side on the motorway and talking to each other, when we see Gavin's car there is a green and white lorry behind him in Smithy's lane. When we see Smithy's car, there is a silver saloon directly behind him.
