Find an Address by Phone Number in the UK
A lawful, confidential trace can help identify the person and current UK address linked to a mobile or landline, when you have a legitimate reason for the search.
- Established 1997
- Accredited investigators
- Confidential case handling
Trace a phone number
Find the address behind a number
Enter the UK telephone number and explain why the trace is needed. We assess whether a lawful, reliable result is realistic before any fee can become due.
Not ready to instruct yet? Get a free quote or ask a question first.
Important service information
This is an instruction form for the £120 no trace, no fee service, not a free enquiry. Payment is due within seven days of a successful trace and before the report is released.
A telephone number can be a useful starting point when a name or current address is missing. The outcome depends on the type of number, the lawful records available and whether the details can be independently checked.
When a Phone Number Trace Can Help
This service is for clients who have a UK telephone number and a legitimate reason to establish who it belongs to or where that person can now be found. It may help with:
- identifying an unknown caller or message sender;
- finding a current address for a personal or legal matter;
- tracing a debtor when the number is the strongest available lead; or
- checking the identity or address of a person or business before further action.
Free caller identification services and public directories are worth checking first. They may show a listed landline, business entry or user supplied caller label. They rarely verify a current residential address, especially for a mobile number, and a label is not proof of identity.
We can assess UK mobile and landline numbers. Pay as you go mobiles, withheld numbers and some internet telephone services may provide little reliable information. Not every number can be traced, and we will not report a guess as a confirmed result.
If you already know the person's name, use our address tracing service. If money is owed, see our debtor tracing service.
How the Trace Works, What It Costs and What You Receive
Before accepting an instruction, an investigator asks why the trace is needed and reviews the information you can lawfully provide. A name, previous address, rough location, date of contact or business details can help distinguish the correct person from someone with a similar number or name.
- Send the number and context. Tell us what you know and the reason for the search.
- We assess the request. We check the legitimate purpose and whether a reliable trace appears realistic.
- Relevant records are compared. A possible match is checked against another appropriate source before it is reported.
- You receive a written result. The report states what was confirmed and any limitation that remains.
Many standard UK telephone traces are completed within 24 to 48 hours. Difficult numbers can take longer. The fixed fee is £120 on a no trace, no fee basis. Payment becomes due only after we confirm a successful trace, within seven days and before the report is released. A completed trace is covered by the stated 30 day retrace or refund guarantee.
A successful trace may confirm a name, current UK address, line type or associated network. It does not provide live GPS data, call content, bank records or a guaranteed result. The available evidence determines what can be reported.
UKPI is registered with the Information Commissioner's Office. Personal data is handled under the UK General Data Protection Regulation and the Data Protection Act 2018. We refuse requests that appear unlawful, intrusive or intended for harassment. Read the privacy policy and terms and conditions before instructing us.
UKPI was established in 1997 and uses accredited investigators. Call 0800 043 1754 if you want to discuss the instruction first. You can also review our costs guide or return to the people tracing hub.
Common questions about phone number to address
Sometimes. A listed landline or business number may appear in a public directory. A mobile or unlisted number usually needs a professional trace, and the result depends on the lawful information available.
Many standard UK traces are completed within 24 to 48 hours. The fixed fee is £120 on a no trace, no fee basis. We confirm the scope before work begins, and some difficult numbers cannot be traced.
It can be lawful when there is a legitimate purpose, such as debt recovery, legal proceedings, fraud prevention or personal safety. We review every request and refuse work that appears unlawful, intrusive or intended for harassment.
Prefer a quote or a quick chat first?
Tell us about your situation and we will call you back within two hours. We handle the information you provide in confidence, subject to legal obligations.
- Free, no-obligation consultation
- Response within 2 hours
- Handled in confidence
