During the auditions, Kaya Scodelario, who was 14 at that time, claimed to be 16 on the forms to get herself noticed. She later felt that she was too young for the part and was about to leave. But a producer told her to stay and convinced her to read for the part of Effy.
In one episode, JJ performs a "magic trick" by blowing fire. As soon as the flame bursts out, you can see (and hear) the reactions of Cook, Effy and Freddie. According to Ollie Barbieri, the reactions of Luke Pasqualino and Jack O'Connell, even the scream of Kaya Scodelario, were all genuine. It was told to them that there will be a fire-blowing scene, but it won't be real. What they didn't know was that Ollie Barbieri would actually blow fire.
While having sex with Sketch, Anwar lists Hugh Grant movies from the 90's and up. Right after he climaxes he states: I never get past "About a Boy". In fact, "About a Boy" stars Nicholas Hoult, one of the series main cast.
Many people think Effy is the only character to appear in 4 seasons, (or 2 generations) but the characters Pandora Moon, Anthea and Jim Stonem (Effy and Tony's parents) and the teacher, Doug all reoccur.
While filming the lake scene of the episode Skins: Naomi (2009), Kathryn Prescott went into a hypothermic shock after jumping in, because the temperature of the water was really cold. The scene was actually planned to be longer, with Emily and Naomi playing around in the water, but the scenes didn't get made because of that.
One character from all of the three generation dies. In Generation 1, Chris dies from Subarachnoid Hemorrhage. In Generation 2, Freddie is beaten to death by Effy's psychotic counselor. In Generation 3, Grace dies from her coma after being in a car crash. In Skins Redux, Naomi gets terminal cancer and it is implied that she will die shortly after the episode, however, nothing is revealed.
It remains unclear if the name of Aimee-Ffion Edwards' character, Sketch, is either her nickname or her surname. Everyone calls her like that, except her mother, who calls her "Lucy". Although it hasn't been confirmed, many people believe that her full name might be Lucy Sketch.