Every postcode district, grouped by the area it belongs to.
Know before you move — schools, safety, prices, transport and more, from official UK data.
Every postcode area — the SL or B at the start of an address — and the districts inside it. Open any district for a full report on what the official data says about it.
A UK postcode has two halves. The first — SL1 in SL1 7NU — is the outward code, and it identifies a district covering a few thousand addresses. The letters at its start are the postcode area, usually named after the town that sorts the mail for it.