The main characters
Actor: Kimberley Nixon
- Bitch in Sheep's Clothing: She's much less sweet than she initially seems, and often gets violent or destructive when she loses her temper.
- Hard-Drinking Party Girl: "I'm a single lady! Can't you handle it?"
- Hypocrite: She's upset at Kingsley for his deception in regards to actually losing his virginity to Ruth instead of her, but Howard points out that she never broke up with Dave, a fact she never admitted to Kingsley.
- Red Oni, Blue Oni: She's the Red to Heather's Blue.
- Villainous BSOD: In series 2, when the housemates learn that she has been thrown off her course: "All I wanted was to give myself to dental hygeine..."
Actor: Joe Thomas
Jonathan "JP" Pembersley
Actor: Jack Whitehall
- Horrible Judge of Character: Continually hangs out with his old friends from Stowe, who obviously don't like him and just use him for money. He's incredibly naive about it.
- Screw the Rules, I Have Money!: JP tries variants of this pretty often, from paying Vod for the biggest room in the house, to bribing his way into a BP careers event. Sam even lampshades this in series 3: "You can't just throw money at me like a one-man Bullingdon Club".
- The Nicknamer: Some of his nicknames are affectionate ("The Funky Vodster" for Vod), others not so much ("The Pig Man of Arbroath" for Howard)
- Upper-Class Twit
- "Well Done, Son!" Guy: To his distant dad "I know you loved me, even though you never said it... or showed it... or even implied it..."
Violet "Vod" Nordstrom
Actor: Zawe Ashton
Actor: Greg McHugh
- Badass Bookworm: Series 3, episode 4: two bookworms fight over a book, Howard is victorious.
- Deadpan Snarker
- Loners Are Freaks
- Lovable Nerd
- Geek Physiques: Pudgier variant.
- Nerd Glasses: He tries contacts but they don't work out for him.
- The Stoic: Or so he claims. To Stowe Boy JP, the term means something very different.
- TV Genius: His list of pub quiz specialist subjects is rather impressive.
Melissa "Oregon" Shawcross
Actor: Charlotte Richie
Paul Lamb The Invisible Man
Actor: Jelka van Houten
- The Comically Serious: She's very, very straightforward and sensible. That's what makes her funny.
- Jerkass Woobie: Sabine's unfriendly treatment by the other house members makes you feel sorry for her... until it becomes clear she's not a particularly nice person to begin with.
- Only Sane Man: She often comes across as this when the other housemates are doing something particularly stupid.
Actor: Faye Marsay
- Corrupt the Cutie: Vod and Oregon are doing their best on her.
- Oop North: The only genuinely Mancunian member of the household, with a harsh accent to boot.
- Put on a Bus: In Series 4, she breaks up with Howard over the phone. Apparently they couldn't get Faye Marsay to return, because she's not seen or heard at all, we only hear Howard's side of the phone conversation.
- Token Good Teammate: In Series 3, she's pretty much the only housemate who doesn't act selfishly and doesn't do anything mean to the others, at least not intentionally.
Professor Tony Shales
Actor: Tony Gardner
- Dirty Old Man: When he's together with Oregon, he's portrayed somewhat sympathetically, but after their breakup he moves to this category, as he simply won't stop lusting after her.
- Teacher/Student Romance: With Oregon.
Actor: Robert Webb
- One of the Kids: Despite being in his late 30s or early 40s, Dan is desperate to prove he's hip with the kids.
- Reasonable Authority Figure: Subverted. He tries to come across as this, but when he feels betrayed by his students (such as when Kingsley files an anonymous complaint on him), he becomes petty and vindictive.
Actor: Sophie Wu
- Put on a Bus: In the beginning of Series 3, Sophie goes to Hong Kong and abruptly breaks up with Kingsley, so Kingsley doesn't even get caught cheating on her with Josie. Though everything eventually comes out when she returns for one more apperance at Howard's birthday party.
- Red Oni, Blue Oni: She's the Blue to Josie's Red.
- Romantic False Lead: She starts off as this, dating Kingsley while Josie longs after him, but eventually she becomes rounded enough to escape the stereotype.