Felix Britten

Felix Britten moves through the corridors of Heartstopper's school-set world as one of the wider circle of boys around Charlie and Nick — present at the edges of the group, watching more than declaring, still working out where he fits among friends whose lives are visibly changing faster than his own.

Ash Self plays him with the low-key attentiveness of someone who notices everything and says little, which suits a show built on glances and hesitations rather than declarations. He's the kind of background presence that makes an ensemble feel like an actual school rather than a cast list.