People Tracing Specialists

Updated 31 July 2026 by K3K Investigations

We find people. Missing family, debtors who have moved on, former tenants, beneficiaries of an estate, old friends and witnesses — traced lawfully across the UK and internationally, confirmed to an evidence-of-residency standard, usually within days and usually for a fixed fee.

People leave a far clearer trail than they imagine. They change address but keep a phone contract; they ignore letters but register a company; they disappear from you but not from the licensed data infrastructure that banks and law firms rely on. Most UK traces are resolved by research alone.

Call 020 3343 7007 — 24 hours, free and confidential — and we will give you an honest read on the odds before you spend anything.

Who we trace

Missing family members — a parent, sibling or child lost to estrangement, adoption or simply time.
Debtors who have moved without leaving a forwarding address. Full detail in our guide on tracing someone who owes you money.
Former tenants who left with arrears or damage.
Beneficiaries and heirs for solicitors and executors administering an estate.
Witnesses and defendants for legal proceedings.
Company officers and guarantors behind a corporate debt — often alongside corporate investigations.

How tracing actually works

Three layers, used in order of cost and intrusiveness. Licensed data sources — the regulated people-tracing infrastructure built from electoral, credit and public records, processed under UK GDPR on a documented lawful basis — resolve the majority of UK traces on their own. Open-source intelligence cross-references social media, Companies House, property and probate records, press and the wider open web. Discreet field enquiries close the gap on the cases the data cannot: deliberate disappearances, decades-cold trails and people living informally.

Our guide how do private investigators find people walks through each layer in detail.

What you get

Not a "last known address" scraped from stale data — a current address confirmed to an evidence-of-residency standard, which is what you need if legal proceedings, enforcement or a first approach depends on it. Free people-finder sites recycle old records; the difference between that and a confirmed trace is usually the entire outcome.

What it costs

Most UK traces are quoted as a fixed fee, commonly £150–£500, depending on how cold the trail is and how much you can tell us. No trace, no fee is available on suitable cases — if we do not find them, you do not pay. International tracing takes longer and is quoted per case. You get the price in writing before we start.

What helps us find them faster

Full name (essential), approximate age or date of birth, any last known address however old, old phone numbers or email addresses, employment or trade, vehicles, and known family or associates. A name plus a last address resolves most UK traces. Bring the details you think are irrelevant — cases turn on them regularly.

How long a trace takes

Most standard UK traces come back within two to five working days. Straightforward cases — a name, a recent address, an ordinary life — are often resolved the same day. What extends a trace is a cold trail (a decade or more since the last confirmed address), a very common name with no date of birth, someone living informally without tenancies or utilities in their name, or a deliberate disappearance where the person has taken steps to stay hidden. International traces depend on the country and are quoted individually.

We tell you which category yours is on the first call, before you commit to anything.

Why free people-finder sites usually fail

The free and low-cost search sites recycle old public records and sell you the same stale snapshot everyone else has. They will happily return an address the person left six years ago, with no indication that it is out of date. That matters enormously when the next step is serving papers, sending an enforcement agent, or knocking on a door yourself — a wrong address costs you the fee, the attempt and sometimes the element of surprise.

A professional trace differs in one decisive respect: the address is confirmed as current before we give it to you, rather than simply retrieved. That confirmation is what makes it usable for proceedings, and it is what you are actually paying for.

Tracing people who do not want to be found

Some subjects are avoiding a specific person, a debt, or the authorities, and behave accordingly: no tenancy in their own name, no registered vehicle, phone accounts in someone else's name, addresses that belong to relatives. These traces are slower and rely much more on fieldwork than data — the pattern of who they stay with, where a vehicle is regularly parked, which address receives their post, and confirmation on the doorstep by an operative.

They are also where most agencies quietly give up and keep the fee. We would rather tell you at the outset that a case is difficult and price it honestly, or decline it, than take money for a search we do not expect to close.

Tracing we will not do

We decline traces where the purpose looks like harassment, stalking, or reaching someone who has deliberately and lawfully separated themselves from the person asking — including cases with a family-court or non-molestation background. We ask why you want to find someone, and the answer matters. Where a trace is refused on those grounds, we say so plainly and you pay nothing.

Where an adult subject is found but does not wish to be contacted, we tell you that, and we do not hand over their address. Our case story Finding Michael covers exactly that ethical line.

For solicitors, executors and landlords

A large share of our tracing work is professional instruction: beneficiary and heir tracing for estates where an entitled person cannot be located, debtor tracing ahead of enforcement, witness and defendant location for proceedings, and former-tenant tracing for landlords and letting agents pursuing arrears. Reports are prepared to the evidential standard those uses require, with confirmation of identity and residency rather than a bare address, and we invoice the firm directly where preferred.

Tracing done responsibly

We screen every request and decline traces where the pattern suggests stalking, harassment or domestic abuse. For estranged-family cases we often work on a consent basis: we locate the person, make a discreet approach, and pass your details on only if they agree. Their answer either way is a result — and it is why reunions arranged this way tend to go well. Finding Michael is an anonymised account of one, including the ethics of it.

Frequently asked questions

Can you find anyone?

No honest agency claims 100%. The substantial majority of UK traces succeed, but deliberate disappearances, very cold trails and some international cases defeat any investigator. What you should expect is a candid assessment of the odds before you pay, and no-trace-no-fee terms where the case suits it.

How long does a trace take?

Straightforward UK traces often resolve within a few days. Colder trails and international cases run one to several weeks. We give you a realistic timeframe once we see what you have.

Is people tracing legal under UK GDPR?

Yes, with a documented lawful basis — recovering a debt, administering an estate, or reuniting family are all recognised legitimate interests. K3K Investigations Ltd is an ICO-registered data controller (ZB535305) and records the basis for every trace. Agencies that cannot explain their lawful basis in plain English are telling you something important.

Will the person know I am looking for them?

Not from the research layers — those are invisible to the subject. Where contact is the objective, you choose the approach, and many family traces run on the consent model above so the first they hear is a respectful approach they are free to decline.

Can you trace someone who has moved abroad?

Often, yes. International tracing is slower and costs more, but people who relocate leave cross-border footprints through property, companies and family ties. We will tell you at the outset whether the destination country makes it realistic.

Looking for someone? Tell us who and why — a senior investigator will give you an honest view of the odds and a fixed quote, free and in confidence. Call 020 3343 7007 (24 hours) or book a call.