Below is my original report, posted on the Adventure Fundraising website.
After not getting to bed until gone 01.00 I was back up again at 05.30 ready to make my way to the start line. After a quick breakfast I hit the tube system on route to my start point at Blackheath. The tube was very busy and once on the DLR & South Eastern trains everyone was crammed into the carraiges shoulder to shoulder. However, all the train operators ran the services very well with extra trains put on and plenty of station staff to assist.