The thing about the UK is that it snows so infrequently* that it's just not worth the investment to deal with it properly. Where I live in the south, I think we've had snow on the roads maybe twice in the last four years, each time for only 1-2 days. The entire country grinds to a halt when it happens, but it happens rarely.

*Or at least it's infrequent these days, I'm sure it snowed a lot more often when I was growing up, and my parents tell me that back in their day it would reliably snow a lot every winter. Must be a Chinese hoax.