Do you mean are some driving test centers easyer to pass than others due to volume of traffic and area they are located? That will depend on what kind of area and roads you are use to driving on. If you live in a rural area where you are use to driving on wide open high speed roads and not driven in town that much, coming to hither green to take your test might be a mistake. Howether I am sure driving test centers in the middle of knowere still have busy towns close by where you might have to drive through. I don't advise you to book a test miles away just because the pass rate might be 40%, if you are use to driving around this area the local test centre is your best bet, but speak to your instructor first and see what he says. Thats just my pennysworth.
What ever you decide good luck
Peter.
http://www.peterpritchard.net/driving/index.htm
DSA, Those who pass their driving test have had, on average, about 45 hours of professional training combined with 22 hours of private practice. Learners who prepare this way, with a combination of plenty of professional training and plenty of practice, do better in the test.