What to Do If Your Business Is Under Fraud Investigation in the UK

Published on November 5, 2026 by Marvin Evans

If investigators contact your business about suspected fraud, do not respond informally. Preserve every record, limit who discusses the matter, and take legal advice before answering questions or handing over documents.

Fraud investigations rarely begin with a dramatic arrest. More often, a business owner receives a letter from HMRC, a request for records, or a call from the police asking for a conversation. Because the first few days can shape everything that follows, how you respond matters.

Who Can Investigate A Business?

Several bodies can look into suspected fraud, depending on the allegation. These include the police, the Serious Fraud Office for serious or complex cases, HMRC for suspected tax and VAT offences, and the Financial Conduct Authority where regulated activity is involved. Knowing who is asking, and why, is the first step.

The First Steps To Take

A calm, structured response usually works better than a reactive one.

  1. Get advice before you reply. A well meant explanation can be misunderstood, and some statements are difficult to withdraw later. If you need support, it is sensible to speak to CG Law Defence about a fraud investigation or another regulated firm with fraud experience before responding.
  2. Preserve everything. Do not delete emails, messages, accounts, or files. Destroying or altering records can create a separate and more serious problem.
  3. Control communication. Decide who speaks for the business, and ask staff not to discuss the matter internally or on social media.
  4. Consider separate advice. The interests of the company and of individual directors can differ, so one adviser may not be able to act for everyone.

If Investigators Turn Up At Your Door

Sometimes nobody warns you. Officers arrive at the office, often first thing in the morning, with a warrant, and start taking laptops, phones and files. It’s a shock, and most people’s first instinct is to start explaining. Resist that.

Ask to see the warrant and read it properly. Write down what time they arrived. Ring a solicitor straight away and ask if someone can come to the premises. While the search goes on, keep your own list of what’s being removed. You shouldn’t get in the way of the officers, but you also don’t have to answer questions or talk them through documents there and then.

When The Request Comes By Letter

A formal request for documents isn’t a reason to panic, and it isn’t a reason to rush either. Some bodies, the SFO for one, have statutory powers to require documents and answers, and ignoring them can be an offence on its own. Other requests are more informal but still need to be taken seriously.

So work out what’s actually being asked for, who is asking, how long you’ve got, and what gives them the right to ask. If the scope looks too wide, a solicitor can often negotiate it down before anything is handed over. That conversation is much harder once the documents have gone.

Legal Privilege

Not everything has to be handed over. Advice you’ve had from your lawyer is usually protected by legal privilege, and that protection matters. The trouble is that privileged emails tend to sit in the same inbox as the rest of the company’s correspondence. If nobody sorts them first, something you could have withheld ends up in the investigator’s hands. It’s a boring job, but it’s worth doing carefully.

Interviews Under Caution

If an individual is invited to an interview under caution, whether through arrest or voluntary attendance, it is a formal process. Answers can be used as evidence. Anyone interviewed at a police station has the right to free and independent legal advice, and having a solicitor present is widely seen as an important safeguard.

Why Directors Should Take It Seriously

Corporate allegations can carry personal consequences. Directors and senior managers may be asked what they knew, approved, or failed to question. Large organisations should also check current government guidance on newer corporate liability rules.

Your Staff And The Business Itself

People who aren’t under suspicion still get dragged into these things. Employees get nervous. A few may be contacted by investigators at home. They can take their own legal advice if they want to, and managers should be careful not to lean on anyone, even by accident, about what they might say.

Meanwhile the business has to keep running. Talk to your accountant early. It’s also worth checking with your bank and insurer about what you’re obliged to tell them. Some policies cover legal costs for investigations, but many only do so if you notify the insurer promptly, so check the wording sooner rather than later.

How Long Does It Take?

Longer than anyone wants. A few months is normal, and complicated cases can drag on for years. You may hear nothing for long stretches, which is stressful in itself.

The outcome varies a lot. Some cases end with no further action. Others finish with a caution, a civil settlement or a prosecution. Companies can sometimes reach a deferred prosecution agreement. In HMRC cases, you may be offered a civil route rather than a criminal one, and that choice is a big one. Take advice before you accept anything.

Choosing The Right Adviser

Fraud cases are document heavy and technical, so experience matters. Check that a firm is regulated by the Solicitors Regulation Authority, ask about relevant fraud and regulatory experience, and make sure fees are explained clearly. For wider criminal matters, you can also consult solicitors specialising in serious criminal allegations who can advise on the full process from investigation onwards.

No reputable adviser can promise a particular outcome, so be cautious of anyone who does.

Please Note: This article is general information only and is not legal advice.

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