Validate your customers in real time

Fast and reliable data entry. Upgrade your form.

Learn more

Laptop Screen

Our address lookup and data validation
technology is used by over 9,000 businesses


Postcoder logo

Our range of APIs and data validation tools help businesses
improve data quality and customer experience


We're here to help developers get
the best out of our solutions

"A great product, exceptional technical support and personalised account management - few do all three as well as Allies"

- Martin Smith, Founder of Resident Pro


API documentation Start your free trial


Full free support Daily data updates Dedicated account management




Latest news from Allies