Needed: implementation of keyword/taxonomy search with location proximity by uk postcode/etc

Hi,

I'm looking for someone to implement keyword/tag/taxonomy searches which list results by proximity to a UK postcode or town (definitely postcode at least), and ideally with a google pinboard map.

Exact specifications would need to be ironed out through discussion with the developer, but if this is a service you could provide, please contact me asap.

thanks,

david