Factual error: Series 8, Episode 2. A family liaison officer would not be alone on the first job.

Deliberate "mistake": In Series 1 episode 1 Nick can use a laptop fluently, yet in series 1 episode 2, Nick has to ask where the "." button is.

Continuity: When Nick becomes a taxi driver, he gives Ben a lift to the cinema. But he sets off in an exorcist's outfit and arives in plain clothes. If he was driving, he couldn't have got changed.

Continuity: Throughout the first series Ben and Susan's bedroom had the window on the left of the screen and the bathroom on the right. In the second series onwards the bathroom and the window have mysteriously swapped around. Also the entire layout of the house changes dramaticly.

Other: At the end, when Nick is painting a nude picture of himself, he moves the mirror and even at a quick glance you can see he has boxers on.

Visible crew/equipment: Just as Ben starts to sing about life, there is a shot of a picture on the piano. If you look at the picture, not Ben, you will see the reflection of a camera or microphone arm.

Plot hole: Janey is on the phone trying to win concert tickets and says, "She has to be caller number 5, rules of the contest are very strict." Susan then says something else and Janey says on the phone, "Dee I have to go, mum's going mad again." She evidently isn't on the phone to win tickets.

Continuity: The Unkindest Cut: When the pregnant lady is at the dentist, the fish in the tank change place drastically depending on the shot.

Revealing: In Series 2 Episode 4, "Trust Never Sleeps," Ben can be seen urinating from a window and Susan slams the window shut. However you can plainly tell by the way Ben is standing that he is not urinating at all.

Continuity: In series 2 episode 4 "Trust Never Sleeps," Susan is on the phone to a neighbor. Susan then shouts, "Ben!" Surely the neighbor would know it's Ben and Susan.

Continuity: Season 2 Episode 5, Death and Ben Take A Holiday: Janey throws the bell out the window but you can see she dosent throw it out the window.

Revealing: Series 3, Episode 5: "Imperfect Strangers". When Ben and Susan are in the car on the way to Manchester you can see the background is superimposed.

Revealing: Second Greatest Story Ever Told: Ben, at the end, has the tooth blacked out and at one point you can just make out a bit of tooth visible.

Continuity: A Handful of Dust: The amount of cereal Ben has in his bowl changes between shots.

Revealing: Ding Dong Meraly: When Susan corners Janey in the kitchen to talk about the baby, she slams the kitchen door and the entire set wobbles rather noticeably.

Continuity: Ding Dong Meraly: Janey wants some lipgloss from the shops. However, being Christmas Day, there are no shops open.

Continuity: Ding Dong Meraly: When the living room is full of Christmas Trees, Ben grabs Nick's neck. Next shot his hands are nowhere near his neck.

Continuity: Ding Dong Meraly: When Nick is asking Ben for the money to set up his drivethrough Santa's grotto, Nick's arms constantly change position depending on the angle. These are instant cuts.

Continuity: Ding Dong Meraly: When Ben first spots the Christmas trees in the living room, his hands are out in front of him. The camera changes and they are now instantly at his side.

Revealing: Sitting Targets: When Nick falls off the ladder, Pamela the snake is an obvious fake.