My sister was invited to study there after achieving a 1st in Applied Maths via the OU. She popped 93% score and was called up by Cambs to do a post grad in Maths (can’t remember exactly what)
She thought she’d be laughed at attending, far from it. Being brilliant meant lots of students looking for help and assistance came knocking and have remained great friends.
She came from nothing, no school exams, ran away at 16 and after her first child at 21 decided to do OU study.. and it continued from there.
She said Cambs is one of the nicest friendliest collages where you aren’t looked down on if you come from nothing. The main cliques exist because kids tend to come from the same schools into Cambs and have already built up friendships over previous years.
I personally would be over the moon if my son went there, and I’d be helping him as much as I can to enjoy the experience.
Best of luck.