On 16 October 2012 13:14, Andrew Gray andrew.gray@dunelm.org.uk wrote:
On 16 October 2012 10:21, Charles Matthews charles.r.matthews@ntlworld.com wrote: if we should try much more targeted ones - London area, Cambridge area, Manchester area, etc. Hmm.)
It is very difficult to accurately identify geographic locations within the UK. IP addresses are generally assigned from an ISPs pool which they use nationwide, so they just identify to wherever the ISP is based.
Truth.
I just checked where http://geoiplookup.wikimedia.org/ believes my (fixed) IP addresses are. "Truro" is the response! (I'm actually just north of London). Geolocation has been something of an interest of mine for a few years and whilst sub-country details can be good in, for example, the USA, it is poor to useless in the UK (and thus something I am working on improving). Some GeoIP services are more accurate for me. IPv6, btw, will make the issue more difficult initially, primarily because of the use of tunneling.
AlisonW