It looks like it is going to be a bit more snowy than first predicted, but providing you can get to the start point ok, I am still very keen to ride. The Crane brothers rode (state of the art then) RetroBike Saracens up Mount Kilimanjaro in the late 80s. What is a few miles of London footpaths by comparison.
We can modify the route, make it shorter, avoid some of the bleaker sections, etc.
Do dress for the weather though, maybe bring a back pack with an extra layer, change of gloves, etc.
I have been advised that helmets are madatory on all RB rides, for me that will be one of the scary downhiller variety. I tested it out yesterday and today in London traffic, I might have looked a prat but the cars stayed at a more respectful distance than usual.
I will carry a few multitools in case things work loose due to the cold, etc. I appreciate you are all grown ups, don't mean to patronise and hope this helps make for a more enjoyable day.