Bank calls you out of nowhere. Hang up and dial 159 first.

The problem

The phone rings, and the caller says they are from the bank's fraud team. They mention a suspicious transaction, sometimes with real-sounding detail, and ask for one of two things: to move money into a new "safe account" while the issue is sorted, or to confirm online banking login details over the phone so they can "secure" the account.

Both requests are the scam. No real bank fraud team moves money by asking a customer to transfer it themselves, and no real bank asks for a full password or login code over the phone.

How it can happen

A scam like this survives on one weak point: it is hard, in the moment, to know whether the caller ID or the voice on the line is genuinely the bank. Numbers can be spoofed to display a bank's real customer service line, and a caller who sounds calm and knows a name and a partial account number can feel convincing enough to override doubt.

The scam is common enough across the UK that banks, telecoms providers, and the fraud prevention group Stop Scams UK built a dedicated short number to solve exactly this problem. Stop Scams UK describes 159 plainly: it works the same way as 101 for the police or 111 for the NHS, a number that can be trusted to get through to a real bank safely and securely, every time. Crucially, the organisation states that 159 cannot be faked, and that 159 itself will never call anyone.

How to avoid it

Hang up. Then, from the same phone, dial 159. That connects to a short menu covering the major UK banks and building societies, entirely separate from whatever number just called, so there is no risk of being routed back to the same scammer.

Never use a number given by the caller during the call, even if they say it is a direct line to fraud prevention. Never move money because someone phoned and asked. If the call felt urgent enough to consider transferring funds on the spot, that urgency is itself a warning sign worth pausing on.

If a payment has already been made, calling 159 immediately still matters, since a bank acting quickly has the best chance of freezing or recovering a transfer before it moves further.

Things to watch

• Any request to move money into a "safe account."
• A request for a full password, PIN, or online banking login code over the phone.
• A caller who discourages hanging up to check, or says checking will cause a delay that puts money at risk.
• Caller ID showing what looks like the bank's real number.
• Pressure to act before the end of the call.

If money or a code has already been shared, read what to do after you shared a code or gave someone access for the steps to take next, in order.