A UK postcode (also known in various countries as post code, postal code or zip code) is an alpha-numeric code which sits at the end of a postal address for the purpose of sorting mail.
The first part of a postcode - the "outcode" - identifies the postal district, i.e. SW is South West London. The second part - the "incode" - depicts the delivery points within that postal district that the local Royal Mail Delivery Office serves. There are about 15 delivery points per postcode.
A postcode helps you find a full address. With a full and accurate address, you can send post to the correct location, helping you to: