Deliberate mistake: In Episode 4, when Maggie's dog is throwing up on the smaller, Chinese dog, you can tell that the latter is just a dummy.
Visible crew/equipment: In episode 3, when Maggie is throwing up at the parrot, you can see the pole they use.
Revealing mistake: When the old man has a heart attack at the opera, watch as the paramedic puts the whole box of tic-tacs in his mouth, he obviously doesn't put them in his mouth but down the side of his cheek/face.
Continuity mistake: In the scene where Daffyd tells his Mum and Dad that he is gay, his mum starts polishing his red belt, then irons an item of clothing. In the very next shot, however, the iron is resting on the ironing board, without her having time to put it down.
Continuity mistake: The boy and his proud mum are auditioning for a movie. In the corner of the screen, a boy in a green shirt walks into the room. Then the boy gets up from his seat, and then boy in the green shirt is back again talking to his dad. (00:18:00)
Continuity mistake: After Sebastian is done singing "You are beautiful," one of the parliament members says, "Can we get him working for us?" while putting his glasses in his pocket. When it cuts he is wearing the glasses.
Plot hole: Series 3 - Episode 6. There is no train station in Llandewi Breffi.
Continuity mistake: When Daffyd is in the corner shop enquiring about Gay Times, the magazines on the rack behind him change during the scene, without anyone moving the rack. (00:00:45 - 00:02:05)
Continuity mistake: When Marjorie is guessing Pat's weight at Fat Fighters, her hand goes from by her side to up in the air between shots. (00:17:10)
Visible crew/equipment: When Officer Lindsay takes Sam Bailey to his 'Police car/Driving Instructor car' you can see the boom microphone reflected in the windshield, as the camera moves past it. (00:26:30)
Continuity mistake: When Marjorie reveals the word "Cravings" written on the board, the appearance of the word and the size of dot above it changes. (00:17:30)
Continuity mistake: In the Matthew Waterhouse sketch with the board games, he starts to play "Milk Round" and he has tipped many items on the table including a green circle sharpener. It is over by the pencil tin in wide shots but in close shots it is near the salesman's arm.
Continuity mistake: When Maggie starts vomiting, the man is already covered in puke, before it reaches him.
Continuity mistake: Before Maggie starts puking on a man, he is already covered in puke.
Continuity mistake: When Miss Grace is typing out Dame Sally Markham's novel, the position of the typewriters platen keeps changing. (00:24:55)
Audio problem: When Bernard Chumley askes Joe who else he wrote a letter to, we hear Joe say "Um, well" but we can see that he is still eating a crisp and that his mouth isn't moving. (00:20:40)
Continuity mistake: When Kenny Craig is playing Scrabble with his Mum in hospital, the scrabble bag keeps changing from laying flat to standing more upright and the pen also keeps moving. (00:07:30)
Visible crew/equipment: In the opening shot of Daffyd walking down the street, you can see crewmembers and the camera reflected in the window as the shot passes it. (00:00:25)
Continuity mistake: When Mr. Cleeves throws down the booklet he is holding before he sits down, it lands on a red book on his desk. In the next shot the booklet is now sitting on an open textbook, next to the red book. (00:05:35)
Continuity mistake: During the scene with Jeremy and Dennis, the pens in the pot on Jeremy's desk keep changing position between shots. (00:14:50)
Answer: If you keep clicking that card a photo gallery will eventually appear.