re: nice concession
"But essentially I was correct"
Let's review - you said:
"When grapes can grow in England then you will know, we are getting as warm as it's been."
You didn't say, "when England has the climate of Bourdeaux then you will know, we are getting as warm as it's been." I've never heard anyone claim that Roman England had Bourdeaux's climate either, just the typical regurgitation of a line they've never bothered to verify, that people used to grow grapes 1000 years ago in England and they absolutely, positively don't grow grapes there now, so it's not as warm now as it was then.