UK Postcode Lookup — Find Any Address Instantly
Search any UK postcode and return full, verified address details in milliseconds. Use our free online tool to look up addresses, or integrate postcode search directly into your website or app with our developer API.
What is a UK Postcode Lookup?
A postcode lookup is a tool that converts a UK postcode into the matching list of addresses. Enter a postcode like SW1A 1AA and you'll see every property registered to that postcode, complete with street name, town, and any business names.
Postcode lookups are essential for online checkouts, delivery booking, customer onboarding, and any workflow that needs accurate UK address data.
How Our Postcode Lookup Works
- Enter a UK postcode (full or partial) into the search box.
- We match it against an up-to-date dataset of UK addresses.
- You receive a structured list of addresses you can pick from.
- Selected results are returned as clean, ready-to-use address fields.
Want a deeper dive? Read our guide on how UK postcodes work to understand the outward and inward code structure used across the country.
Why Use Get UK Address
Fast & Accurate
Sub-second response times against a regularly updated UK address database.
Developer-Friendly API
Simple REST endpoints, JSON responses, and clear error messages following RFC 9457 Problem Details.
Affordable Pricing
Free 2-week trial — no card required — then best-value-for-money paid plans with monthly and yearly billing.
Flexible Payment
Pay by card (GBP via Stripe) or by USDT on the TRC-20 network via OxaPay.
Common Use Cases
- E-commerce checkouts — reduce typos and abandoned carts with instant postcode autocomplete.
- Delivery & logistics — confirm valid UK addresses before dispatch to cut failed delivery costs.
- CRM & onboarding — capture clean, structured customer addresses in signup and KYC flows.
- Form validation — verify a UK address exists before saving it to your database.
- Lead generation — pre-fill address fields to shorten quote and contact forms.
Free Postcode Lookup vs API Access
| Free Web Lookup | API Access | |
|---|---|---|
| Search any UK postcode | Yes | Yes |
| Use in your own website or app | — | Yes |
| Programmatic access | — | Yes |
| Daily request limits | Manual use only | Plan-based |
| Best for | One-off lookups | Production integrations |
Integrating Postcode Lookup via API
Our REST API is the fastest way to add UK address autocomplete to your product. Authenticate with an API key and call a single endpoint:
GET /api/v1/autocomplete?query=SW1A+1AA&api_key=gua_your_key
You'll get back a JSON list of matching addresses ready to render in your form. Full request and response details — including error codes and rate-limit headers — are in the API documentation.
Frequently Asked Questions
What is a UK postcode lookup?
It's a tool that takes a postcode (such as SW1A 1AA) and returns the matching addresses, including street, town, and any organisation name registered at that location.
Is postcode lookup free?
You can search any UK postcode for free on our website. For programmatic API access, we offer a free 2-week trial — no card required — followed by paid plans for production use. See our pricing page for details.
How accurate is UK postcode data?
Our address data is sourced and updated regularly to reflect Royal Mail postcode changes, ensuring high accuracy for delivery, validation, and verification use cases.
Can I integrate postcode lookup into my website?
Yes. Our REST API lets you add postcode autocomplete and address validation to checkouts, signup forms, and CRMs in minutes. Start with the API documentation.
Which postcode formats do you support?
We support every valid UK postcode format issued by Royal Mail, from M1 1AA to EC1A 1BB. See our guide to UK postcode structure for a full breakdown.
Ready to start looking up UK postcodes?
Start with a free 2-week trial — no credit card required.