Iain,
I thought I had gone early enough, 8:30 am, got to the top, stopped there for a bit to eat and a peek at the new building, it was about 10 by the time I started the descent, obviously not early enough. Will have to start earlier next time.
P.S Took me 46mins to get down, I am usually around the 37-38 mark.
Cheers
SJ