“Behind the scenes of Heartstopper series three” by Josh Parry & Lauren Moss for BBC October 2nd 2024. I love that we got a little quote from costume designer Adam Dee there! Haven't had any from him for season 3 yet.
https://www.bbc.com/news/articles/czxd0121q1do
Looks like that's Chris DuMont behind the camera in the first photo.
*EDIT: confirmed (from Chris DuMont's Insta stories)!: