Over the last couple of years Londonist has been privileged to bring you tales from the life and times of Buster Martin, the centenarian Pimlico plumber who first came to fame after being ordered, under duress, to take a day off work on his 100th birthday. Now, having completed the London Marathon in just under ten hours - and collecting some £20,000 for the Rhys Daniels Trust in the process - Buster was expected......