What is the hilliest city in England?

I think the hilliest city I've ever been to in England has to be Bristol. Is this why the government has made it Britain's first cycling city? I can't think of many cities that'd be more crippling to cycle around. Well, half the time, half the time it'd be the easiest city to cycle around I suppose.

On average it's flat... shit that sounds dangerously like maths, and I promised Danny no more maths.