Open Nav

Guides

Resources about UK addressing, PAF, Ideal Postcodes APIs and more

ShopWired Integration

Updated 25 Jun 2020

ShopWired integration for UK address search and validation

UDPRN: Unique Delivery Point Reference Number

Updated 3 Jun 2020

Understanding the unique ID number assigned to every premise in the UK

Pricing Plans

Updated 8 Jul 2020

Find the most valuable plan that fits your usage

Gravity Forms: Add Address Validation to your Forms

Updated 12 Jun 2020

Integrate address validation to your WordPress Gravity Forms pages

Postcode Areas

Updated 7 Jul 2020

A complete list of UK postcode areas and regions

Formidable Forms: Add Address Validation to your Forms

Updated 9 Jun 2020

Integrate address validation to your WordPress Formidable Forms

Postcode Lookup or Address Finder

Updated 7 Jul 2020

How to choose between searching a postcode and address autocompletion

Supported Territories

Updated 8 Jul 2020

UK territories covered by Royal Mail's Postcode Address File (PAF) and the Ideal Postcodes APIs

Ideal Postcodes and SubscriberCRM

Updated 3 Jun 2020

Integrate postcode lookup into your CRM app in a few simple steps

Odoo Integration

Updated 25 Jun 2020

Integrate address validation to Your Odoo Application

BigCommerce Integration

Updated 25 Jun 2020

BigCommerce integration for UK address search and validation

Multiple Residence

Updated 7 Jul 2020

What is a Multiple Residence dataset and how is it used? Illustrations and examples of MR data

API Key

Updated 2 Jun 2020

API Keys allow you to access our services outside the website. Find out what it is and how to use it

Address Validation for Mobile Devices

Updated 8 Jul 2020

How to improve your mobile conversions

UK Address Guidelines

Updated 23 Mar 2020

Ensure your mail is correctly addressed with our UK clear addressing guidelines

Glossary

Updated 9 Jul 2020

A glossary of address terms

Organisation Information on PAF

Updated 3 Jun 2020

Listed in PAF are names of companies, organisations and departments. This organisation information can be useful and appropriate for specific use cases

Importance of Address Validation

Updated 8 Jul 2020

How address validation can help your business

Browser Extension

Updated 12 Jun 2020

Integrate address validation to Chrome and Firefox browsers

Sage Business Cloud Accounting Integration

Updated 10 Jun 2020

Integrate address validation to Your Sage Application

End User - Who Is Licensed to Use the Data?

Updated 29 Jun 2020

Identifying the final user of Royal Mail's dataset

Why Can't I Find My Address?

Updated 8 Jul 2020

Why your address might not be showing on Royal Mail's Postcode Address File

Setting Up Automated Top-Ups

Updated 12 Jun 2020

A guide on enabling Automated Top-Ups on your account

Magento Extension

Updated 30 Jun 2020

Magento extension for UK address search and validation

Run Postcodes.io Database Locally

Updated 23 Jun 2020

Run a local instance of the latest Postcodes.io database and start dispatching SQL queries in minutes

Office for National Statistics Postcode Directory (ONSPD) Licensing

Updated 5 Jun 2020

ONSPD licensing: How data from Postcodes.io can be used

What Is the Postcode Address File (PAF®)?

Updated 8 Jun 2020

The most accurate and reliable address dataset for the UK, provided by Royal Mail

Thoroughfare Descriptors

Updated 6 Jul 2020

List of Thoroughfare & Dependant Thoroughfare descriptors in the UK

UPRN: Unique Property Reference Number

Updated 3 Jun 2020

What is a UPRN, its uses and how it compares to the Postcode Address File

Postcode Validation

Updated 3 Jun 2020

How to validate a UK postcode. Evaluating the trade-offs for various solutions including postcode lookup services, proprietary postcode datasets, free datasets and regular expressions (regex)

Not Yet Built Dataset

Updated 3 Jun 2020

The Not Yet Built dataset is an additional database from Royal Mail that lists properties currently in planning or under construction

Internal User Licensing

Updated 3 Jun 2020

What is an Internal User? When is it right to license this way?

Address Autocomplete

Updated 3 Jun 2020

What is Address Autocomplete and how is it useful?

Address Verification System or Address Validation?

Updated 8 Jul 2020

Address Verification System and Address Validation sound alike, but they are tools which have different uses

The UK Postcode Format

Updated 3 Jun 2020

A comprehensive outline of UK postcode patterns, its constituent components and how they can be utilised. Split a postcode into outward code, inward code, postcode area, district code, sub-district code, postcode sector and postcode unit.

WooCommerce Extension

Updated 6 Jul 2020

WooCommerce extension for UK address search and validation

Unbounce: Add Address Validation to your Forms

Updated 9 Jun 2020

Integrate address validation to your Unbounce form

Securing Your API Key

Updated 6 Jul 2020

Best practices to mitigate the risk of misuse on your API key for frontend and backend integrations

Quick Account Setup on Ideal Postcodes

Updated 10 Jun 2020

Step by step guide on creating an Ideal Postcodes account, creating a key and enabling automated top-ups

Integration Configuration

Updated 25 Jun 2020

Standard configuration settings for our address validation integrations

What are Geocodes?

Updated 7 Jul 2020

The importance of geocodes and how they are beneficial to businesses

Missing Postcode

Updated 7 Jul 2020

Why can't I find my postcode?

Sublicensing

Updated 7 Jul 2020

A guide on how the Sublicensing Platform works

What is a Lookup?

Updated 3 Jun 2020

How lookups are counted across Ideal Postcodes address search and validation APIs