Postcodes.io
postcodes.ioPostcodes.io is a free, open-source postcode lookup API and geocoder for the United Kingdom maintained by Ideal Postcodes.
What your agent can do
Lookup a UK postcode against the ONS Postcode Directory (ONSPD).
Via API.
Tasks depend on the interface and permissions.
Connection methods
Choose a route that fits your agent.
API
For custom integrations
no account or key
Docs checkedView paths for APIAPI connection
API path
https://api.postcodes.io/postcodes/BR87RE- Authentication
- No sign-in required.