at Leicster if you tunr downwind before 1000ft on 28 you will be politly not asked to visit again. A lot of places have restrictions for noise abatement.
I agree circuits are to big, one of my pet hates is the bomber circuit. I never leave the airfield perimiter in my 152 but still seem to end up on the outside of dubtrub! But a couple more hours practice and a might be able to cut inside him as a I am sure it is possible to fly a circuit without leaving the airspace above the runway...........