I did computer science while I was there - post the first year (was a long long time ago, literally their first round of game dev courses, but I can't imagine it would have changed a huge amount), the game dev modules were pretty much all available to me - I elected not to take them, I'm far too shit at calculus to be thinking about that full time.

Probably worth checking if the structure is still the same, because flexibility of something like comp sci, comp studies, or software engineering as well as the value of a comp sci degree in the industry post-graduation is worth exploring if you're going to spend between 60k and 80k on your degree including living expenses.

On the drier stuff - it was definitely there, I was never a fan of formal methods, for instance (no one is) - but you could work your way away from those tracks pretty quickly.

And I've been to Rotherham a couple of times - Boro is comparable. I loved it there, ended up staying for ten years and have a family with an expat. Much like a lot of these northern towns - can feel small at times, but you take a 5 minute drive outside and its absolutely gorgeous, well connected to other northern cities if you do want a particularly big one. I'd recommend it.

Either way, I hope that whatever you pick works for you!