Address Lookup

AFD’s address lookup solution allows you to search and validate UK and International address data. Our flexible postcode lookup API and range of plugins makes it easy to add address validation to your websites, apps, front-end and back-end systems.

Using the address search field below, enter your postcode or start typing an address to see results returned.

Business Benefits
Address validation saves time and money. It is the backbone of excellent service, customer retention, prevention of duplicates, data analysis, enhanced reputation and more profitable business performance.  

The Postcode People at AFD help deliver the best possible address search solutions for your company to help ensure: 

Typing addresses is slow. AFD’s address lookup solution makes data entry lightning fast.

Many UK addresses are ‘odd’, complicated and not as expected – manual mistakes are easy. Our address verification solutions eliminate errors by providing letterbox-level accuracy based on the very best data sources including Royal Mail PAF® and Ordnance Survey (OS) AddressBase Core®.

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AFD’s solution was initially used as a desktop service for telephone orders. As the focus switched to online so did our requirement from AFD. UK and International address validation are both deployed on the website to ensure speed and accuracy during the customer’s buying journey, regardless of where they need the product delivered.

Nick Marlow

Project Manager of Platform Operations at Pro:Direct Sport

Easy to Integrate

AFD’s address validation API can be flexibly deployed in a host of environments, installed, or hosted.
Plug-ins for popular platforms such as Magento, Shopify, Salesforce, D365 and AFD Robot provide a range of developer-free integrations via our address lookup API.
Visit our Developer Area using the button below to find out more.

Available Functionality

AFD’s address lookup and postcode lookup solutions can validate address data from over 250 countries.
In addition to fast, accurate address entry and address search, our solutions can return a whole host of other datasets.
See some of the options below:


International address validation

UK and International address validation API for over 250 countries helps organisations trading globally to lookup and validate addresses worldwide. More information can be found here.

Business Name data

Almost all 2.2 million UK organisation data records are complete with telephone numbers, the actual or imputed employee size, turnover banding, and user-friendly business classification and Standard Industry Classification (SIC) code. 
More information can be found here.

Residential Name Data

The 37.6 million UK residential name and address records include length of residency and geodemographic classification. Over 11.9 million of the records have a telephone number.
More information can be found here.

Address Lookup with Maps

Once an address has been selected using AFD’s address validation API, property level latitude and longitude data can be returned to show the exact location on a map. This location can then be edited by simply dragging the “pin” on your chosen mapping software if a delivery needs to not be at the front door or the address has multiple buildings.

See more information here.


Our geolocation API functionality removes the need for manual address data entry. If enabled, by using the GPS in your customer’s mobile device or computer, our solution instantly returns the full PAF matched address of the current location, in the correct format with pinpoint accuracy and lightning fast speed.  


Nearest functionality allows a customer to enter their postcode, click a button and be given the branch name and address closest to the address provided with an accurate travel time or distance.

Property characteristics

AFD’s address lookup and postcode API solutions also contain location and property characteristic data for over 31 million unique properties in the UK. Every record has unique identifiers in the form of a Unique Property Reference Number (UPRN) from Ordnance Survey (OS) and a Unique Delivery Point Reference Number (UDPRN) from Royal Mail’s Postcode Address File (PAF). In addition, all addresses have a property classification, e.g. Residential or Business, to help organisations better understand their customers’ property data and help plan for more efficient deliveries.  

Geodemographic classification

Each residential postcode on your database can be appended with a Censation code (there are 52 different codes) which will indicate the typical relative affluence, life-stage and lifestyle of those who live there. It’s a simple to use but effective Geodemographic Classification System and with it, you can understand more about the ‘profile’ of your best customers – and then look for more of them. That way, resources are more wisely directed to prospects which match the right profile – cutting waste and improving the probability of success.


Adding the what3words functionality to AFD’s address lookup solution helps organisations improve customer address data capture during the checkout process on e-commerce websites. Logistics companies benefit by having an extra layer of data to get their drivers to the exact delivery location which isn’t always the property.

Related Datasets

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We are here to help

We serve thousands of organisations and a network of hundreds of partners across multiple industry sectors, enabling them to have full confidence in their contact data.