Questions? Contact our UK support team: 01492 539021 or 01492 539022



About Postcodes4U

Postcodes4u is a trading name of 3x Software Ltd. We have been a Royal Mail PAF Database reseller for over 15 years and providing software solutions to business problems for over 30 years. We have particular expertise in Ecommerce, Processing card payments and Retail. 

There are a number of benefits to using Postcodes4U address/postcode look-up service.  

Postcodes4U uses Postcode Address File (PAF®) from Royal Mail, it is the most up-to-date and complete address database in the UK, containing over 28 million addresses.  You can rest assured that we are a registered royal mail reseller and we offer first class customer service and are based in the UK

  • We offer the option to top up automatically when your credits are running low
  • Simple Integration in minutes
  • No hidden costs
  • Free Mobile App for Android and iphone Devices
  • Cheaper than the main competitors
  • Telephone support

We have very competitive packages to suit all businesses, whether you are a small business or a large organisation we can reduce your costs considerably without compromising data quality.

Easy to Use Dashboard

Once you have registered your account with us, the dashboard enables you to manage your account, view your credits, monitor your usage and use our address finder.

Developer API

Developers will find the integration simplicity itself -we'll give you the code to include, and we're a phone call away for assistance 

Use it free-standing if you prefer. Copy/paste to include formatted addresses

Want grid references? We've got them.


To purchase credits simply register, buy with a credit/debit card or Paypal, integrate as necessary, and that's it.

Mobile Application

If you are an Android user our mobile app is available to download from the Android mobile app store for free.  



Get started in less than 5 minutes.


with a no obligation FREE trial