Thanks to TG, mattc and downhill for your company. I got back home at 8.56, after a puncture in Aylesbury. I had thought that might have pushed me over the time limit, so I was quite grumpy for a while, until matt confirmed the limit was 13 hrs 59 mins, so I feel better now.
Clearly I need to work on my routing skills, as there was too much time spend on main roads.
My next ride is the Poor Student - see some of you then!!
Happy New Year,
Lycra Man