The
Royal Mail's online Post Code Finder is a useful tool to know about if you already have most of the rest of a British address.
Enter some basic information - house name or number, street name and town and, as long as you've entered that information accurately, the tool produces a full post code and a map of the location. There are also some tips and pointers to help you search.
City Addresses are trickier
If you are heading for a larger city, where there will be a lot of streets with the same name, it is still wise to keep track of the postal code before you leave home - or at least find out the name of the neighborhood you're heading for. Otherwise the tool may throw up six, ten, even twenty different addresses.
Find out why knowing a British Post Code is vital for getting around the UK