Thought I'd update the thread as Gaz hasn't been here for some time. He's still tweeting under 39stonecyclist.
Unfortunately he has a number of health problems, and I think one is a severe form of arthritis which has meant he's been 'retired' from work - he's only in his 30's.
He isn't cycling at the moment due to his illnesses, but is still keeping the weight off ! Hopefully he will pop in at some point and give us an update.