I first use Transportdirect.info to see what public transportation I can take because sometimes it can be faster, cheaper and earth saving.
I also use Google Maps to help me get to somewhere I am not sure of.
You can also buy area maps for Suffolk or the whole of England to get you around. These can be handy especially if you get caught in a traffic jam and are looking for a way around it!
The British Postal service is divided up by post codes which are similar to zip codes but they can get you to your destination within a block with just knowing a post code.
All the Best!
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American to Britain