Great event . Thank to all the volunteers and everyone else that made this event happen . Managed 23:33 , very happy with that time and glad I packed my gortex jacket. I think we forget sometimes how easy the British weather changes . Especially with Saturday daytime being a fairly nice day. Got lost between 79 and 82.5 ,didn't see the entrance back onto the Thames , so had to double back ! Glad the glow sticks were there , they were quite reassuring.