Had a look at the GMaps API a little while ago for integrating it into a customer management system and it's very good. Only problem is when you start searching for company names and getting two results...
Thanks. I've managed to get a list of postcodes through hacking about with the Skoda website, so I only really need a distance thing now. Or I guess just a list of what the local postcode prefixes are, since it's less "how far" and more "is it nearby" that I want to know.
There's probably a map of postal areas somewhere, but haven't got round to looking yet.