In article ,
Peter Thomas writes:
snip
Trying to think which year we had -10 or was it -12 here in Surrey.
Early 80s, maybe? We had less domestic insulation then, but were
younger.

I think that between about 1978-9 and 1987 there were about five winters
when at least one night had a minimum in that sort of range in Lowland
Surrey.
--
John Hall
"Acting is merely the art of keeping a large group of people
from coughing."
Sir Ralph Richardson (1902-83)