Lightning-fast postcode and address search API. Millions of addresses, sub-50ms responses, zero dependencies. Built for developers who demand speed and reliability.
Type any UK postcode and see instant results
Everything you need for UK address lookups, nothing you don't
SQLite-powered queries deliver results in under 50ms. No cold starts, no external dependencies.
API key authentication, CORS restriction, rate limiting, and timing-safe comparisons built in.
Not just postcodes. Get building numbers, street names, localities, towns, and counties for every result.
Single PHP file + SQLite database. Deploy to any hosting in under 5 minutes. No frameworks needed.
Real-time postcode suggestions as users type. Perfect for address forms and checkout flows.
Powered by HM Land Registry Price Paid Data. Free, legal, and updated regularly under Open Government Licence.
Simple RESTful endpoints. JSON responses. That's it.
Include your API key in every request using one of: