The locker that Cook sets on fire, used to be owned by Sid in the previous series of Skins.
This episode was dedicated to Max Preece, a contributor of the show, who died in June 2008 at the age of 21 after he fell off a roof.
In the first series there were only three girls (Cassie, Jal and Michelle) and the rest of the group was made of five boys. The roles are now reversed as there are only three (later four) boys for five girls in this new group.