Looks like navman could be the ticket boys.Matey you have to be aware that some of the cheap systems dont go down as far as street level, you really need to get an established one that has full access to updated maps and not the cheap generic brands that are cashing in on the boom ..go Tom Tom or Navman they've been doing it for years
and this is how to suck eggs...
yeh, but those phones are £200+.Or a phone that you can use TomTom on(Nokia N95/N80 etc)i downloaded the latest version for free from a site,works great,just had to buy a GPS receiver for £18 off Fleabay