Phone Number Append

Reach more of the people you’re trying to contact.

Missing or outdated phone numbers stall collections, campaigns and customer contact. UK Tracing appends verified telephone numbers to your records at scale – helping you connect faster and recover more.

Upload your file and we’ll match it against current, verified datasets to return valid landline and mobile numbers. Ideal for high-volume contact strategies where reaching the customer is the whole battle. Fully GDPR-compliant, with the option to combine with email append and address verification in a single pass.

Get a Quote - UK Tracing

Get a Quote

A rough figure is fine - it just helps us price it accurately.

How it works

Send us your data

Send us your data

We match & verify

We match & verify

records checked against current telephone datasets.

Receive your enriched file

Receive your enriched file

appedended numbers, match rates, and a compliance-ready report.

What's included

Verified landline and mobile numbers

Match-rate reporting

GDPR-compliant processing and audit trail

Optional bundling with email append and address verification

GDPR-compliant reporting

Why UK Tracing?

30+ years of data expertise. ISO 9001 & ISO 27001 certified. Trusted by regulated firms across the UK.

If you can't find your debtor, they'll never pay.

Get in touch with UK Tracing today.

Frequently Asked Questions

Who are UK Tracing?

UK Tracing are a people tracing service, locating your gone-away customers, debtors and tenants to a new address. A trading style of STA International Limited, we have over 30 years experience in tracing our clients’ gone-away subjects.

What is a tracing agent?

Tracing agents specialise in finding the current address for your subject. Use cases include locating your debtors, getting an up to date address to serve legal documents and reconnecting with old customers.

What does 'no trace, no fee' mean?

For our address tracing service, if we can’t find a new address or confirm the current address for your subject, you don’t pay. In the rare event of this happening, your payment will be refunded in full.

What counts as a positive trace?

A trace is regarded as positive when we either find a new address, or confirm the current address for your subject.

Can I place multiple files to be traced?

We provide regular and bulk tracing services to numerous letting agents and solicitors. To enquire about discounts that are available for bulk and repeat traces, please contact us on 03030 030 158
 or email us at [email protected]

Do you offer a trace and collect service?

As part of leading UK debt collection agency, STA International, we do offer trace and collect services. We’ll trace your subject to their current address and then attempt to collect the debt owed to you. Contact us for more information on this service.

What information do you need to start a trace?

To start tracing, we usually need basic information such as the name, date of birth, last known address, and any relevant information. The more details you can provide, the quicker and more accurate the search will be.

What is beneficiary tracing?

Beneficiary tracing involves locating individuals who are entitled to inherit from a will, estate, or trust. This service is often used when family members or heirs are missing or unknown, and their whereabouts need to be confirmed to settle the estate.

Copyright: © 2026 UK Tracing. UKTracing is a trading style of STA International Limited. Registered in England & Wales. Company Registration Number: 02893487