I've done it!!  4hrs and 20mins.  It was an amazing day, the crowds were fantastic and that, coupled with all the messages I've received and knowing that I was raising money, kept me going.

To those who have already sponsored me and to those who are about to - THANK YOU SO MUCH! 

Donating through Justgiving is quick, easy and totally secure.  It's also the most efficient way to sponsor me:  Alzheimer's Society gets your money faster and, if you're a UK taxpayer please remember to tick the Gift Aid box as Justgiving makes sure 25% in Gift Aid, plus a 3% supplement, are added to your donation.