The light snow we've had falling for hours hasn't made an awful lot of difference in Croydon, it's barely added to the crunchy snow that was out there already.
Yesterday on my commute, I did skid a few times, and it was in places where the snow was thinning, at the end of the cycle paths where there was some salt, and which reduced the snow to a slushy and iffy state. Luckily, unlike Oscar's Dad, the wheel just slid for a short distance before regaining grip.