UK Address Search & Validation Made Simple

Postcode Lookup, Address Autocomplete & more

The most up-to-date & accurate UK dataset from Royal Mail PAF^®

From 2p per lookup & open data is free

Free Trial Get Assistance

Simply Priced

Worry-free pricing with no hidden costs or lock-in. A flat, pay-as-you-go rate of 2.5p per lookup

Incredibly Accurate

Access the UK's most accurate and up-to-date address database from Royal Mail, updated daily

Well Supported

Simple integration with clear documentation, open-source libraries and live support from developers

Flexibly Licensed

Leave licensing complexity to us. We also provide industry specific solutions for Public Sector, Charities and SaaS

Access the most accurate address dataset in the UK

Updated daily by thousands of postmen and women, Royal Mail's Postcode Address File (PAF ®) provides the most accurate and up-to-date address dataset available in the UK

Address updates are retrieved daily so you won't miss a premise

Trusted by Many

We work with developers across small businesses and startups through to public and FTSE 100 organisations

Customer Stories

As an integral part of our onboarding process since we launched, Ideal Postcodes has contributed a lot to Starling Bank's success. Their extremely reliable service has helped to ensure that our wholly digital onboarding process provides a smooth welcome to new customers.

Jason Maude
Chief Technology Advocate, Starling Bank

Testimonials

“Comprehensive, straightforward documentation and a cost-effective service”

Elliott Gresham

Technical Director at SubscriberCRM

“Implementation was really simple and support was easily accessed”

Daniel Rivers

Web Manager at Restless Beings

“Integrating Ideal Postcodes into our forms has made all the difference and they’re really great to deal with”

Diane Morton

Director at Wag & Company

“Simplicity together with excellent documentation”

Ceri Richmond

Managing Director at Core

“The team was brilliant start to finish making integration and setup so easy!”

Andrew Board

Managing Director at Screwsline

“API documentation is fantastic, the plugin is very well written and easy to implement”

Shane Muirhead

Developer at Our Agency

“I have never seen a company or person develop an entire example plus documentation to support a customer”

Tayyibun Institute

“The support is fantastic and the product is great!”

Ian Byron

Managing Director at Black Pearl Claims

“It's a better thought out and executed system than the previous one I used”

Mark Kowalczyk

Founder at Special Moment

“We're a charity and needed access to postcode data … Really helpful!”

James Dennison

Head of Fundraising, Membership & Communications at Staffordshire Wildlife Trust

“As a charity we find the service invaluable … support for the service is always prompt, friendly and helpful.”

Cat James

Finance & Office Manager at Friends of the Lake District

“Installed, activated, and batch of lookups purchased! Amazing. You guys are great!”

Neel Shearer

Founder at Just a Small Thing

Backed by simple API Methods

Postcode Lookup Address Search Autocomplete

Integrate postcode lookups with any form in moments

Add postcode lookups to any web form by embedding and configuring our jQuery Plugin

Demo HTML JavaScript

 1<!-- Add a div to house your 
 2     postcode input field -->
 3<div id="lookup_field"></div>
 4
 5<!-- This is your existing form -->
 6<label>Address Line One</label>
 7<input id="first_line" type="text" />
 8
 9<label>Address Line Two</label>
10<input id="second_line" type="text" />
11
12<label>Address Line Three</label>
13<input id="third_line" type="text" />
14
15<label>Post Town</label>
16<input id="post_town" type="text" />
17
18<label>Postcode</label>
19<input id="postcode" type="text" />

 1<script>
 2// Add this after your form
 3$('#lookup_field').setupPostcodeLookup({
 4  // Add your API key
 5  api_key: 'ak_hk71kco54zGSgVf9ExxRVVNmolLNh',
 6  // Identify your fields with CSS selectors
 7  output_fields: {
 8    line_1: '#first_line',  
 9    line_2: '#second_line',         
10    line_3: '#third_line',
11    post_town: '#post_town',
12    postcode: '#postcode'
13  }
14});
15</script>

Demonstrations limited to 15 lookups per IP, per day

See more examples · Read the documentation · See the code

Or integrate with Address Autocomplete

Add Address Autocomplete to any input field with our Autocomplete Plugin

Demo HTML JavaScript

 1<input id="input" type="text" 
 2  placeholder="Search for an address with autocomplete" />
 3<!-- Create an input field to attach autocomplete -->
 4
 5<!-- Below are your existing input fields -->
 6<label>Address Line One</label> 
 7<input id="first_line" type="text" />
 8
 9<label>Address Line Two</label>
10<input id="second_line" type="text" />
11
12<label>Address Line Three</label>
13<input id="third_line" type="text" />
14
15<label>Post Town</label>
16<input id="post_town" type="text" />
17
18<label>Postcode</label>
19<input id="postcode" type="text" />

 1var controller = new IdealPostcodes.Autocomplete.Controller({
 2  api_key: "iddqd",
 3  inputField: "#input",
 4  outputFields: {
 5    line_1: "#first_line",
 6    line_2: "#second_line",
 7    line_3: "#third_line",
 8    post_town: "#post_town",
 9    postcode: "#postcode"
10  }
11});