I went along to the ride. It was a nice morning when I left home but by Hyde park it was raining hard. I was second to arrive at Greenwich and we waited half an hour, leaving as a group of 13. I'd really cooled down while stopped and didn't warm up much on the run over to London Bridge but someone gave me a glass of port which made a big difference
My plan was to head off to Chelmsford for lunch at my sisters place so decided to leave then so I could ride at a faster pace to warm up. The day was pretty mild so, although it rained all the way to Brentwood I was comfortable enough.
The last hour or so was in glorious sunshine but the roads were more flooded than I can remember. quite a lot of traffic out too.
Thanks to Francis and co for organising the ride. I'd like to have stayed longer but couldn't be in two places at once!