It took me 4 attempts, that was in Chesterfield which supposedly has the 2nd lowest overall pass-rate in the country, some of the roundabouts really aren't very nice, and many people who have passed quicker elsewhere can't drive in Chesterfield so I think I'm a winner really.
As I said in another thread "My advice would be if they talk to you, then try and keep conversation flowing if you're comfortable doing that and driving. In the test I passed I talked to the woman a lot more and she gave me a minor for something which could have been 50/50 minor/serious, so maybe she empathised with me a little. Oh, and always favour caution over feeling you need to make progress, because in 4 test I never received a minor for hesitation, and at times I was fairly hesitant."