Ok so many people here are misinformed!
Four manoevres: turn in road, bay parking, parallel and reverse round corner.
As N9ne said, you will be asked to do two. It can be any two, you won't definately get a parking one, even if your test centre has bays. Mine did and on my test I got a turn in road and a reverse round corner.
And as N9ne also said, one in three people get an emergancy stop, which is in addition to the 2 manouvers