So, I was pleased to see my suspicions confirmed by this : http://whatismyipaddress.com/
It thinks I'm between Cambridge and Ipswich. Now I am intrigued as to why. I'm not there, my ISP isn't there, and last time I spoke to them, the routing for my account was done from near Reading. So, what is it there in the East that it's picking up? I'd love to know.
It did get my country right, which is an improvement over my Claranet days when checkers of this kind always insisted that I must be in Germany.