Agree with Genghis
All 6 of the circuits at White Waltham are identified by landmarks to avoid noise-sensitive areas. Two of them are non-rectangular. All 6 of them are much bigger than I'd like them to be.
But it's also important to be abe to judge your position relative to the runway, since this is the "usual" way of flying a circuit at an unfamiliar airfield (or even at a familiar airfield, if noise abatement isn't an issue).
Flexibility is important when it comes to traffic considerations. Extending downwind is the most common technique, but upwind and crosswind can be extended too. If you have ATC you may be told to extend for traffic, otherwise you'll need to spot the traffic yourself and make a decision about how best to avoid it. Being flexible with your speed, at least until you turn final, can also help.
FFF
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