I'm planning on waking up at stupid o'clock tomorrow, and cycling in before the cars have made too much of a mess of the roads, and also hopefully missing most of them. This will end up with me being in work three hours (or more) before I normally turn up, and I won't be able to leave early because that would drop me into the middle of the evening rush hour(s)!
Most of the snow I'll have to contend with, will be on the first 2/3 mile from my house to a mainish road, the bits across the commons (Tooting Bec and Clapham), and possibly a little around work. From Friday, none of it was problematic, so long as I remember where the kerbs are!