He is shown to be easily jealous, and has a habit of launching into foul-mouthed rants when he becomes annoyed, often getting himself and his friends into trouble or awkward situations as a result.

After his many mishaps in the series, romantic or otherwise, in the first film Will joins his friends on a lads' holiday to Malia, Crete where he meets and forms a genuine relationship with Alison.

His father buys him an old, small and yellow Fiat Cinquecento Hawaii – Simon, Jay, Neil and others think the car is embarrassing and dislike the colour, and mock the fact that it has a tape deck.

The car's passenger-side door is ripped off due to Jay opening it prematurely during an argument while Simon was reversing, and colliding with a signpost at Thorpe Park.

However, the couple break up at the end of the episode "The Trip to Warwick" after they fail to have sex due to Simon being unable to get an erection, following unwise advice from Jay.

At the boat party near the film's climax, Simon finally realises that Carli does not reciprocate his feelings (using him to make James, her narcissistic ex-boyfriend, jealous) and instead chooses Lucy.

Jay Cartwright, the youngest of the four protagonists, is crass, immature, untrustworthy and obsessed with sex, with almost all his comments concerning the subject.

In reality, he is the least sexually experienced of the group, lacking confidence and frequently relying on pornography to attain gratification, as he finds it difficult to converse with girls.

At the end of the first series, Jay opens up to John Webster, admitting that many of his stories are exaggerated because he is worried that people do not notice him, and that he is afraid of being ignored.

Another recurring theme of Jay's character is that he often steals things, such as hair removal cream ("Duke of Edinburgh Awards") and a flyer for a house party ("Will's Birthday") from a girl named Sadie Cunningham during registration.

He is a very good dancer, his speciality being "The Robot" and has a crush on his biology teacher Miss Timms, with his drunken advances toward her in "Xmas Party" ending in humiliation.

For instance, in "Caravan Club", Will rebuffs the advances of a promiscuous punk girl due to a lack of romantic sentiment; Neil however demonstrates no such concerns, experiencing the same "pushy" approach but accepting it readily, spending a night in Simon's car with her mutually masturbating.

Neil also claims to have sexual encounters with unseen female characters on the show, including much older colleague Karen at Asda.

He appears to be less hostile (yet by no means friendlier) towards Jay, Simon and Neil and dubs the boys as a collective: "Team Twat".

Jay and Neil attempt to buy some off him upon learning of this, only for him to take the money and sarcastically give them tea granules wrapped in cling film.

He is sardonic, sadistic, misanthropic, dry, and possesses minimal enthusiasm for his occupation, once telling Will that teaching is merely a "graveyard for the unlucky and unambitious" and that "a more relaxed view on police checks" is the sole reason anybody is in the profession.

On the occasions he does stop wrongdoing, he defuses the situation without actually resolving it; for example threatening Will if he 'grasses' on Mark Donovan for tying him up and putting a bin over his head.

He also enjoys handing out detention for the most trivial of reasons, giving Jay and Neil four weeks of it after they mention Waterside, the shopping centre they spotted him buying soft toys in.

He takes delight at any misfortune to befall Will – perhaps most notably laughing raucously on hearing the news of Will being thrown into a lake by his work experience colleagues.

He also blackmails Will into discovering who destroyed a local roundabout's flower arrangement by threatening to sabotage his university application, as he believes Will sticks his "beaky nose" into everybody's business and must know who did it.

In the third series, he tells Will that he is single (despite allegedly dating Miss Timms in the episode 'Xmas Party') and that Will's mother Polly is "very much his type".

In episode one of series three, a wedge is driven between Carli and Simon after he accidentally revealed one of his testicles in the fashion show, believing he did it on purpose to make a fool out of her.

Polly often overshares details or stories about Will, who is seen to be embarrassed by his mother, like in "Home Alone" she asks Neil to insert a suppository to cure Will's migraines, when she told Simon and Mark Donovan in "Thorpe Park" about the time he cried on the ghost train, when, aged seven and drunk on shandy, he "pulled down his pants" and ran around yelling "I've got a white slug".

In one episode, Mr. and Mrs. Cooper separate temporarily, which upsets her greatly; however when Simon hears her about her crying, he describes it as "blubbering" that embarrasses and annoys him.

However, Mr and Mrs Cooper reconcile by the end of the episode, and according to Will's narration, have noisy sex upstairs whilst the boys are in the front room.

In the series finale when Mr Cooper announces that after a hard decision, he is moving the family to Swansea, Simon reacts badly and says he will stay in London and get a flat with Jay, offering Andrew the chance to live there too; Andrew flatly refuses to even consider it, implying that he would rather move to Wales than live with Simon and Jay.

Jay often steals things out of her bag, including hair removal cream and an invite card to Louise Graham's birthday party.

Similarly to Sarah Bell, Neil quickly also tells Simon that he reckons "Jo Larken shaves her pubes" when he realises a curtain has been put up meaning he cannot see the girls.

However he supposedly drank a bottle of vodka and passed out due to a mix of alcohol and nerves, leading Will to take his place, despite his previous criticisms of the Fashion Show, saying it was "exclusive vanity".

In "The Fashion Show", Chris is supposed to be modelling with Carli D'Amato in the "Sexy Finale" Theme in which he had to wear Speedos, DMs, a top hat and a leash.