Royal Mail Alias

Using Alias with PAF® enables businesses to identify and deliver to properties that have additional address characteristics, like house name which improves address match rates and business targeteting.

Royal Mail Alias

The Royal Mail Alias File is a specialist dataset that enhances UK address data by resolving common issues caused by alias addresses—alternative names, non-standard formats, or locally known place names that don’t match Royal Mail’s official delivery addresses.

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Better Match Rates

Alias data helps identify properties with alternative or additional address identifiers—such as building names, sub‑building names, or historic address formats—boosting match rates and reducing failed lookups.

Identify Home Businesses

Alias records make it easier to spot home‑based businesses, enabling more accurate segmentation, targeted outreach, and improved B2B marketing intelligence.

Stronger Identity Checks

By recognising alternative address forms, alias data supports more reliable verification processes and ensures accurate delivery of parcels, letters, and sensitive communications.

Fewer Address Errors

Alias data helps resolve inconsistencies caused by informal, outdated, or colloquial address versions, reducing customer service issues and improving communication accuracy.

Enhance Fraud Prevention

By revealing alternative address forms and historical naming conventions, alias data helps organisations validate customer information more thoroughly and identify anomalies or suspicious activity.

Information About The Dataset

The Royal Mail Alias File is a specialist dataset that enhances UK address data by resolving common issues caused by alias addresses—alternative names, non-standard formats, or locally known place names that don’t match Royal Mail’s official delivery addresses.

Alias data is not included in the standard Postcode Address file (PAF), however is an additional dataset that can be used to enhance existing address information. It includes 3 million records, so having access with aliases alongside PAF will help identify accurate address more quickly.

There are four types of alias records: Locality, Thoroughfare, County and Delivery point aliases.

Locality records include local names and Postally Not Required (PNR) details.
Thoroughfare records include alternative, unofficial and combination names used locally for streets and thoroughfares
Delivery Point Alias records include additional information such as trading names and building names.
County Alias records include historic county names, administrative and postal county information.