In message , at 17:48:04 on
Mon, 26 Aug 2013, Chris Hogg remarked:
It has me anywhere within the M25. Only 300 miles out, which I'm quite
pleased about!

Which simply proves that geolocation based on IP address is crap.

However, should you be using a laptop (let alone mobile) with wifi,
there are tools/databases that people can use which will quite likely
locate you within a few hundred yards.

--
Roland Perry