I think its the earliest for quite a few years last night, cars frozen. I have just returned from 2 weeks on Orkney to find a colony wiped out by wasps while I was away. Hopefully the drop in temps will see them off. Sick to the back teeth of them this year. I will have to redesign my floors over winter to incorporate the wasp defense entrances when required some of you have suggested.
Barely saw a wasp this year and it was a big surprise given the invasion of the previous one.
I put wraps on in the new year and taking them off in spring I found lots of queen's that I squished.I think that may have helped.
Still 6c overnight here even when it's not raining