AI Voice Scams UK: How to Spot a Fake Call

Your phone rings. The caller sounds exactly like your grandchild, distressed and asking for money right now. But the voice was built by a computer from three seconds of audio taken from their social media. By the time most people realise what has happened, they have already transferred the money.

Starling Bank found that 28 per cent of UK adults have already been targeted by one of these calls, yet 46 per cent have never heard of them. This guide covers what you need to know before you get one.

What Is an AI Voice Scam?

An AI voice scam is a phone call where the caller sounds like someone you know, but the voice has been generated by artificial intelligence. The technology, known as voice cloning, can recreate a convincing copy of a person's voice from as little as three seconds of recorded speech. Scammers collect this audio from videos posted publicly on social media.

They use this fake voice to create a distressing story, usually a sudden emergency, and press you for money before you have time to think. Our guide to how AI voice cloning works explains the process in plain English. The same technology is also used to create fake photos and videos; our guide to spotting deepfakes covers what to look out for there.

How Does the Grandparent Scam Work?

The most widely reported version goes like this. You receive a call that sounds exactly like your grandchild, son, or daughter. They say they have been in an accident or are stranded somewhere and need urgent help. They need money right now and ask you to keep it quiet, often because they say the police told them not to speak to anyone.

Every part of the call is designed to stop you thinking clearly. The voice sounds right, the story is urgent, and the request for secrecy cuts you off from anyone who might slow you down. For a broader look at how these calls fit into AI scam phone calls generally, including HMRC and bank impersonation calls, see our separate guide.

Is There a Newer Variant? The Survey Scam

A second version has been flagged by UK councils and consumer groups. A scammer phones you and asks if you would like to take part in a short lifestyle survey. The questions feel routine. What do you enjoy eating? What do you watch on television? The kind of questions you'd answer without thinking twice. You spend a few minutes chatting quite openly.

What you do not know is that while you answer, they are recording your voice. They use that recording to clone it and then contact your bank or a direct debit provider, pretending to be you giving consent for a payment. Which? has warned that this version is on the rise in the UK.

The message is simple: if an unexpected caller asks you to take a survey, decline and hang up.

What Are the Warning Signs on a Suspicious Call?

Even a convincing AI voice is not perfect, and the behaviour of the caller usually gives things away.

• Strong urgency. Scammers push you to act immediately and do not give you time to think.
• A request for secrecy. "Please do not tell anyone" is a serious warning sign.
• An unusual payment method. Requests for bank transfers to an unfamiliar account, or payment by gift card, are almost always scams.
• They avoid personal questions. Ask something a stranger could not know from social media, such as what they gave you for your last birthday. A real family member will know.
• The call feels slightly off. There may be a faint delay, a robotic quality, or phrasing that does not quite sound right. Trust your instincts.

What Should You Do If You Get a Suspicious Call?

There are a few steps that stop most of these scams before they cause harm.

1. Hang up. It may feel rude, but it is the safest response. If the emergency is real, the person will understand.
2. Call them back on a known number. Use the number already saved in your phone. This is the most reliable way to check whether the call was genuine.
3. Tell someone else first. A friend or family member can help you decide whether the situation sounds real.
4. Report the call. Report scam calls to Report Fraud on 0300 123 2040 or at reportfraud.police.uk. This is the UK's official fraud reporting service, run by the City of London Police.
5. If the call claimed to be from your bank, dial 159 after hanging up. This connects you directly to your bank's fraud team so you can check whether the call was genuine. It works with most major UK banks.

The UK government's Stop Think Fraud campaign has a useful phone fraud checklist if you want further guidance on spotting suspicious calls.

Should You Set Up a Family Safe Phrase?

Yes, and doing it now rather than waiting is the key. Agree on a random word or short phrase with your close family. It can be anything unusual that no one else would guess, such as "cabbage" or "purple elephant".

If you ever receive a suspicious call from someone claiming to be a relative, ask for the safe phrase. A genuine family member will know it. A scammer using an AI voice will not.

Starling Bank launched a Safe Phrases campaign specifically to counter AI voice scams, backed by the government's Stop Think Fraud initiative. The idea is simple and the protection it gives is real.

How Can You Protect Your Own Voice From Being Cloned?

Many people do not realise that scammers can use your voice to target the people around you. A few simple habits reduce that risk.

• Set social media videos to private or friends-only. Public videos are the most common source of voice samples for cloning.
• Limit what you say on cold calls. If a stranger phones and starts asking questions, you do not have to answer. Saying very little reduces how much of your voice they can capture.
• Think carefully before leaving voicemails for people you do not know. That short recording stays in their phone and can be used as raw material for cloning your voice.
• Register with the Telephone Preference Service (TPS). You can register for free at tpsonline.org.uk. Legitimate companies cannot legally call you once you are registered, which means unsolicited cold calls you receive after that are more likely to be from a fraudster.

FAQ: AI Voice Scam Questions

Don't Feel Bad If You Were Targeted

These scams are run by professional criminals. The technology is genuinely good now, good enough that most people cannot tell the difference between a real voice and a cloned one. Being taken in is not a sign of naivety.

If you have lost money, call your bank first, then Report Fraud on 0300 123 2040. Speed matters here. The faster you act, the better the chance of recovering the funds.

For broader advice on staying safe with technology, our AI safety guide is a good next step. Age UK also has a helpful scam awareness guide written specifically for older adults.