I never had to do the hazard test, but my mate just did it recently and mentioned it in an email
'Well I passed my theory test this morning, so it's all go for phase 2.
Multiple choice I ranked in at 100%, i got 54 in hazard perception, which is actually quite tricky - a lot of it is about judging when a hazard becomes a 'developing hazard' (see below - contains spoilers). Being a cyclist I consider just about everything a hazard, even the road. Still, I knocked 6 of them off on maximum points, so not all that bad. The problem was I'm a very relaxed passenger, so by half way through I was just enjoying the scenery and struggling to pay attention - particularly as they went through places I've been, including Baldock and Crickhowell (Wales).
There was one with a motorbike turning right across the road, and then it turning into a U-turn, I had no idea at which point that thing officially became a 'developing hazard' (somewhere between turned right and U-Turn i suspect). Afterwards they gave me a few trial questions, and the hazard one there I was watching some old guy and his wife, I was wondering why he was pointing at something in the sky, I didn't realise he was actually flagging down a taxi.'
' The purpose of the test is not to identify hazards, but to be able to distinguish between hazards, potential hazards and developing hazards. It's the last sort you are looking for. A developing hazard is one which would make you change speed or direction.
Don't expect the footage to be good, it's rubbish. Don't click too early or too late. I have heard that lots of highly experienced drivers (eg. instructors) fail the hazard perception, because they anticipate so damn early (just like me).'