"Where you went wrong, Helen, was confusing the decimal parts of the degree with minutes and seconds:
53.321o = 53o 19' 17.04"
0.314o   = 18' 48.96"
Tesco is close to 53o 32' N, 31' W but that is not where it took place. It was at 53o 19' 17.04" N, 18' 48.96" W (= 53.321oN, 0.314oW), i.e. just South of Market Rasen

Remind me not to ask you to do any map reading for me ;-)"

Redfaced, now Doug! It WAS late! Thanks for that cos it did confuse me and I was going to look again and I DID misread it like you said!Trust me to get it wrong in public! It's a long time since I was in the girl guides! Great night at the Tap, btw! Well MC'd!