The Royal Mail has explained two letters can never appear next to each other in a UK postcode. The mail service created the postcode system to maintain a database of deliverable addresses.

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Discussing this, a Royal Mail spokesperson said it is "absolutely essential" that you have the correct address and postcode. The expert added: "There can be considerable problems if your details ...

There are over 30 million UK postal addresses registered on the Royal Mail's Postal Address File with new locations being added to the database all of the time. When you change address ...

The Royal Mail has shared two letters that can never appear next to each other in a UK postcode. The mail service created the postcode system to maintain a database of deliverable addresses.

Moving house means ticking off a never-ending checklist - including notifying everyone that you have changed address. Between packing boxes and picking up the keys for your new pad, one ...