Hi, I am based in chatham kent. Given exam in gillingham which has many round abouts incudes big round about with multilanes
Sorry I'm not near there so can't advise on test centres. What I would advise though is choosing one near you, even if it has roundabouts, and practice there a lot so you'll be confident there on the day of your test. Good luck! :-)
It's not about the test centre, it's about whether you are ready enough to take the test. Cause you could go to a test centre with the highest pass rates and pass your driving test but after passing driving will not be easy considering all the different road types and the different situations you will face.