Debtor tracing explained: when a private investigator can help you recover money

When someone owes you money and then seems to vanish, the debt can quickly become more than a financial problem. You may have invoices to pay, rent arrears to recover, a contractor who has disappeared, or a former tenant who has left without giving a forwarding address.

Debtor tracing is the process of lawfully locating a person who owes money so that the next stage of recovery can begin. That might mean sending a formal letter, issuing a court claim, instructing a solicitor, arranging mediation, or deciding whether the debt is worth pursuing at all.

At SPS Investigations, we provide professional people tracing services for clients in London, the Home Counties and across the UK. We use compliant people tracing techniques, specialist databases and years of investigative experience to help locate individuals where there is a legitimate reason to do so.

Why debtor tracing matters

A debt is only recoverable in practice if you can identify and contact the person who owes it. Many creditors already have enough evidence to show that money is owed, but they cannot move the matter forward because the debtor has changed address, stopped answering calls, closed social media accounts, changed phone number, or given false contact details.

This is particularly common in cases involving unpaid invoices, former tenants, self-employed contractors, private loans, failed business agreements and individuals who have moved after a dispute. In some cases, the person is deliberately avoiding contact. In others, they have simply moved and failed to update their details.

The wider debt problem is significant. In March 2026, the UK Government said late payments cost the UK economy £11 billion each year and lead to the closure of 38 UK businesses every day. It also stated that business owners affected by late payments waste an average of 86 hours per year chasing invoices, equal to 133 million staff hours across UK businesses.^[1]

For SMEs, unpaid invoices are not a minor inconvenience. Bibby Financial Services’ SME Confidence Tracker for Q3 2025 reported that SMEs were owed an average of £64,108 in unpaid invoices, while nearly three in ten had suffered a bad debt in the past year. Average write-downs were reported at £31,456.^[2]

When is debtor tracing useful?

Debtor tracing is useful when the main barrier to recovery is not proving the debt, but finding the person. It is often the step that comes before a formal recovery process, because a creditor usually needs an address or reliable contact route before legal correspondence, court paperwork or enforcement can progress properly.

Common situations where tracing can help include:

• Unpaid invoices: A customer, client or sole trader has not paid and has stopped responding.
• Former tenants: A tenant has left owing rent, damage costs or unpaid bills, without giving a forwarding address.
• Vanished contractors: A tradesperson has taken a deposit, failed to complete work and become unreachable.
• Personal debts: Someone has borrowed money privately and then moved or cut off contact.
• Business disputes: A former partner, director, subcontractor or supplier needs to be located for correspondence or proceedings.
• Pre-legal checks: You need to confirm whether it is worth instructing solicitors or issuing a claim.

There is no official UK statistic that neatly records how many debtors deliberately disappear each year. However, the scale of tracing activity is considerable. The Guardian reported in 2024 that an estimated 20 million identity traces are made in the UK each year, many on behalf of organisations owed money. That same report also highlighted the risks of poor-quality tracing and mistaken identity, which is why careful verification matters.^[3]

Why tracing matters before legal action

In England and Wales, a creditor can apply to a county court to claim money owed by a person or business.^[4] If the debtor is an individual or sole trader, the Pre-Action Protocol for Debt Claims may apply before proceedings are started. The protocol applies to businesses, including sole traders and public bodies, claiming payment of a debt from an individual, including a sole trader.^[5]

That makes reliable contact details important. If you send documents to an old address, you may waste time, increase costs, or weaken your position. A professional trace can help confirm whether you have a current residential address, a linked address, or enough information to make an informed decision about the next step.

The volume of debt-related court activity remains high. Ministry of Justice statistics for January to March 2026 show that County Court claims were up 7% compared with the same period in 2025, reaching 527,000. Of these, 450,000, or 85%, were money claims.^[6] Registry Trust also reported 308,926 new consumer and commercial judgments in England and Wales in Q1 2026, including 42,806 commercial judgments with a total value of more than £167 million.^[7]

Tracing does not guarantee payment. It does, however, help answer a practical question: can this person be found, and is it worth taking the next step?

Debtor tracing for landlords and former tenants

Landlords can be left in a difficult position when a tenant leaves owing rent, abandons a property, causes damage, or disappears after notice. The issue is not always just the money owed. It can also affect deposits, guarantor discussions, insurance claims, property repairs and whether legal recovery is realistic.

Government English Housing Survey data published in December 2025 found that in 2024-25, 2% of private renters reported currently being in rent arrears and a further 3% said they had fallen behind with rent payments in the previous 12 months, giving 5% of private renters in current or recent arrears overall.^[8]

From the landlord side, NRLA research published in 2025 found that 41% of landlords had seen tenant rent arrears in the previous two years. Of those landlords, 38% pursued a County Court Judgment, 34% said tenants eventually repaid, and 28% wrote off the debt.^[9]

Rent arrears can also exceed the protection offered by a standard deposit. Reposit figures reported in May 2026 put average rental arrears at £2,281 in Q1 2026, compared with an average traditional deposit of £1,308.^[10]

For landlords, tracing may help locate a former tenant so that correspondence, evidence packs, debt recovery steps or solicitor instructions can be properly directed. It should always be done lawfully, proportionately and for a legitimate purpose.

What information helps us trace a debtor?

The more accurate information you can provide, the better the chances of a clear and cost-effective trace. You do not need to know everything, but small details can help separate the right person from someone with a similar name.

These details can help SPS Investigations when tracing a debtor:

• Full name, including middle names if known.
• Approximate age or date of birth.
• Last known address.
• Previous phone number or email address.
• Business name, trading name or company connection.
• Vehicle details, where lawfully relevant.
• Copies of invoices, tenancy documents, contracts or written agreements.
• Any known family, employment or location links.

SPS Investigations can also trace a mobile telephone number where it is registered and where there is a lawful basis to carry out the enquiry. This is not live phone tracking and it does not involve unlawful access to private communications. It is a compliant trace using appropriate data sources.

What methods can a private investigator use?

A professional investigator does not need to rely on guesswork or risky shortcuts. We use a combination of lawful research, database checks, address verification and investigative experience. This may include public records, company records, open-source intelligence, electoral roll-related data where lawfully available, credit-linked address intelligence, specialist paywalled databases and cross-checking of information from multiple sources.

Under UK data protection law, personal information must be processed lawfully, fairly and transparently. The ICO explains that legitimate interests is one of the lawful bases for processing personal information under the UK GDPR, but it must be used carefully and appropriately.^[11]

That is one of the reasons to use an experienced private investigator rather than attempting intrusive or unreliable methods yourself. We do not use unlawful surveillance, hacking, blagging, phone interception, bank account access, live mobile tracking or any method that breaches UK law. A trace should be accurate, proportionate and defensible.

How hiring a private investigator can save time and money

Many business owners and landlords spend hours trying to find a debtor themselves. They search online, message old numbers, contact mutual connections and trawl through social media. Sometimes that works. Often, it leads to outdated information, false matches and wasted time.

A professional trace can save money because it helps you avoid sending legal letters to the wrong place, paying for court action too early, or spending more time chasing a debt than the debt is worth. It can also help you decide when not to proceed. If the person cannot be reliably traced, appears to have moved abroad, has insolvency issues, or has no clear recoverability, that information is still valuable.

At SPS Investigations, we have carried out people tracing work for many years. We understand that clients usually come to us after they have already spent time and energy trying to resolve the issue themselves. Our role is to give you a clearer picture, so you can make a practical decision about recovery.

What happens after a debtor is traced?

Once a debtor has been traced, the next step depends on the circumstances. Some clients pass the confirmed information to their solicitor. Others send a letter before action, restart communication, use a debt recovery agency, consider mediation, or issue a court claim. In landlord cases, the trace may support a deposit dispute, guarantor claim, money claim or insurance process.

For many simple contract debts in England and Wales, limitation periods may be relevant. The Limitation Act 1980 states that an action founded on simple contract shall not be brought after six years from the date the cause of action accrued.^[12] The details can vary, especially if payments have been made, the debt has been acknowledged, or the matter involves a different type of agreement. If the debt is old, it is sensible to take legal advice before spending money on recovery.

Tracing should be seen as one part of the recovery process. It gives you information. It does not replace legal advice, debt recovery advice or the court process where those are required.

When should you instruct SPS Investigations?

You should consider instructing us when you have a genuine debt or legal/commercial reason to locate someone, but your own enquiries have reached a dead end. The sooner you act, the easier it may be to work from fresh information. Addresses, phone numbers, employment details and digital footprints can become harder to verify as time passes.

Before contacting us, gather the documents you already have. That may include invoices, signed agreements, tenancy paperwork, email trails, proof of payment, text messages and any last known details. We can then advise whether a trace is likely to be appropriate.

SPS Investigations is based in London and provides private investigation services to people and businesses in London and the Home Counties. We approach debtor tracing discreetly, professionally and in compliance with UK law.

Need to trace someone who owes you money? Contact SPS Investigations to discuss your case in confidence.

FAQs about debtor tracing

What is debtor tracing?

Debtor tracing is the process of lawfully locating a person who owes money. It is often used when someone has moved, stopped responding, left a tenancy, disappeared after taking payment, or provided outdated contact details.

Can a private investigator trace someone who owes me money?

Yes, provided there is a lawful and legitimate reason for the trace. A private investigator can use compliant research methods, specialist databases and verification checks to help locate a debtor. The investigation must be proportionate and compliant with UK law.

What details do you need to trace a debtor?

A full name is the best starting point. It also helps if you can provide an approximate age or date of birth, last known address, mobile number, email address, company details, tenancy records, invoices or any previous correspondence.

Can you trace a debtor from a mobile phone number?

In some cases, yes. SPS Investigations may be able to trace a mobile telephone number if it is registered and if there is a lawful basis for the enquiry. This does not mean live tracking or accessing private phone records. It means using compliant data sources to help identify or verify linked information.

Is debtor tracing legal in the UK?

Debtor tracing can be legal in the UK when carried out for a legitimate purpose and in compliance with relevant laws, including UK data protection legislation. Reputable investigators avoid unlawful access, deception, hacking, phone interception and intrusive methods.

Can debtor tracing guarantee I get my money back?

No. Tracing can help locate the debtor, but it does not guarantee payment. It can, however, help you decide whether to send formal correspondence, instruct a solicitor, start a money claim, use a debt recovery agency, or stop pursuing the debt.

Can a landlord trace a former tenant who left owing rent?

Yes, where there is a legitimate reason to do so. A landlord may need to trace a former tenant to pursue rent arrears, property damage costs, unpaid bills or legal correspondence. The trace should be carried out lawfully and with care to avoid mistaken identity.

How long does debtor tracing take?

Timescales vary depending on the quality of the starting information and how difficult the person is to locate. A trace with a full name, date of birth and recent address is usually more straightforward than a trace based on limited or uncertain details.

Should I trace a debtor before going to court?

In many cases, yes. If you do not have a current address, you may waste time and money sending documents to the wrong place. A trace can help confirm whether you have reliable contact information before taking further steps.

What should I do if the debt is old?

If the debt is old, you should consider legal advice before pursuing it. Limitation periods may affect whether court action is available. A trace can still be useful, but it should be weighed against the value of the debt, the evidence available and the likely prospects of recovery.