How much average spend would you need per week in Birmingham?

That's going to totally depend on how much you eat, drink, method of travel to Uni and placements.

I eat a lot so I will be aiming to cook in bulk on a Sunday evening and trying to avoid the temptation of eating out.

I'll be happy if I can stick to below £100 a week.

So is £77.50 a week enough would you say?

Im so screwed xD im going to end up with £30 a week if i save up enough over the summer :P Gonna need a job

Yeah I'd really struggle with that. But I bet people do manage it. Maybe a bar job two nights a week would boost that nicely?