In reply to ClemFandango:
Weird! I've had a look a the photos of the wall but can't really work out what they have at the top.
It looks like you are right, a single screwgate, most places have two options at the top i.e. another clip in point for leading.
Most places don't like you pulling down the top ropes either!
It all seem a bit strange since there are obviously quick-draws for leading.
Maybe ask the staff at the wall.
IF you want to practice leading, clipping etc., then you could always top rope and climb with your rope attached to your harness. as long as you're not being pulled up the wall or on a tight rope, then it's almost the same.
It's an easy option for the wall, simply fit a maillon on the chains and put the top rope into that, then use the screwgate for leading
Post edited at 15:32