United Kingdom Major Regions Postal Code Details

GB United Kingdom Major Regions Postal Code Details

🏛️ Belfast · Northern Ireland

BT11 8SN

Andersonstown

Andersonstown belfast northern ireland BT11 8SN United Kingdom

BT14 8AS

Ballysillan

Ballysillan belfast northern ireland BT14 8AS United Kingdom

BT1 3SG

Belfast

Belfast belfast northern ireland BT1 3SG United Kingdom

BT10 0LL

Finaghy

Finaghy belfast northern ireland BT10 0LL United Kingdom

BT11 9BL

Kennedy Way Industrial Estate

Kennedy Way Industrial Estate belfast northern ireland BT11 9BL United Kingdom

BT5 7HJ

Knock

Knock belfast northern ireland BT5 7HJ United Kingdom

BT9 5QW

Malone

Malone belfast northern ireland BT9 5QW United Kingdom

BT7 3FT

Ormeau

Ormeau belfast northern ireland BT7 3FT United Kingdom

BT9 5BH

Stranmillis

Stranmillis belfast northern ireland BT9 5BH United Kingdom

BT4 1QU

Sydenham

Sydenham belfast northern ireland BT4 1QU United Kingdom

📮GB United Kingdom Regional Postal Code FAQ & Postal Regulations

📮 What is the basic format of a UK postcode?

A UK postcode consists of 5-7 alphanumeric characters, split into two parts: the outward code (area and district) and inward code (specific street/building). Examples: SW1A 1AA (London) or M1 1AE (Manchester).

🔍 How to find or validate a UK postcode?

Use Royal Mail's free Postcode Finder tool on their official website to search by address, or third-party APIs for validation.

⚠️ What happens if I write a wrong postcode?

Incorrect postcodes may cause delays, returns, or lost mail. For important items, use Tracked services and double-check the recipient's postcode.

📬 Is a postcode mandatory for UK mail?

Yes! Postcodes are essential. Mail without a postcode or with errors faces significant delivery issues. Always write the postcode on a separate line at the end of the address (e.g., London SW1A 1AA).