The experience was incredibly straightforward. I had to go through security and then onto the embassy building, was instructed to take the lift and take a seat until my number be called. Waited around 15 minutes to be called, was asked four questions and was approved subject to everything being ok with my medical.
I brought much more evidence with me but surprisingly was never asked for any, even when I prompted, he wasn't interested in it.
Had my medical the same afternoon and was told everything was fine and would be sent off to the embassy.