For the first time in as long as I reliably recall, I almost slipped and fell on the ice outside. Many places it's just pure ice on the sidewalks. That is, I did slip, and would have fallen if I hadn't been walking next to a fence I could grab.
This was actually the way my maternal grandfather died. After slipping on ice on a sidewalk.
Back in Denmark, all the sidewalks are shovelled and sanded, enforced by law. This seems not to be the case in the UK, which is a pity. There must surely be a big price to pay every winter in broken hips.
Anon points to "snow chains for boots". Not elegant, but then neither is a crutch.