I recall visiting the old tower with BRL and a few other forumites 7 or 8 years ago, which was a great privilege and for which many thanks to those who arranged it.
SD - I believe I was one of those fellow forumites. As a lowly PPL it was a great experience.
I remember that while in the tower the Captain of a US heavy was told off as he became No. 1 for departure but then had to admit he hadn't received all his paperwork (which he had been hoping to get before reaching that point) and so couldn't go - he had to taxi round to the back of the queue. The controller wasn't happy, but I was pleased to see even the big boys get it wrong sometimes!
Gonzo - I think you were the person that showed us round, for which I'm very grateful.
Vancouv