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Fraud and scams Freephone 0800 / 0808

Call Santander UK on 0800 313 4321 from abroad

Santander UK takes fraud and scam reports on 0800 313 4321, a freephone line, and says its fraud team is available 24 hours a day. From abroad, dial it here from your browser.

  • Payment you do not recognise
  • Scam call, text or email
  • Card used without you
  • Fraud spotted while travelling
By the Losali team Prepaid, no subscription
Quick answer

0800 313 4321 in 10 seconds

Number
0800 313 4321: Santander UK's freephone line for reporting fraud and scams
Hours
"Our fraud team is available 24 hours a day."
From abroad
0800 is UK freephone, a domestic rule. From a foreign line it may not connect, or is billed as an international call. Goes through with Losali, from your browser.
In the app
Freeze or unfreeze a card in Mobile Banking or Online Banking. Report card fraud from the transaction itself: tap it, then Help with this transaction. Sandi, the digital assistant, chats 24/7 when you are logged in.
Other subjects
Telephone Banking and general enquiries are on Santander's ordinary 03 line, which this page does not cover. Suspicious emails go to phishing@santander.co.uk.

Sources: santander.co.uk, How to report fraud; santander.co.uk, Help with emergencies; santander.co.uk, Lost or stolen cards (read on 4 October 2026).

Santander UK's fraud and scams line
NumberWhat it is forHoursFrom abroad
0800 313 4321Reporting fraud and scams, freephoneFraud team available 24 hours a dayWith Losali
Mobile Banking app and SandiFreeze, unfreeze or report a card; report card fraud from the transaction; chat with SandiSandi 24/7 when logged inOnline, from anywhere
No installation

Nothing to install: the call runs in your web browser.

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Chrome, Firefox, Safari or Edge, on phone, tablet or computer, from any country.

Private call

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Pay per minute

Prepaid credit at €0.99/min. You pay only for the calls you make, with no subscription.

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How it works

Call the UK in three steps

A Losali call starts in under a minute, from any country, with no installation and no UK SIM card.

  1. Create your Losali account

    Sign up in a few seconds, without an app or a UK SIM card. Your account opens access to UK special numbers: freephone, geographic, 03 and service lines.

  2. Add credit when you need it

    Pay only for the calls you make, at €0.99/min, with no subscription and no commitment. The price is shown before the call starts, and a call that does not connect is never charged.

  3. Call the number as written

    Allow the microphone and you are connected. You dial the number exactly as it is written on this page, without +44.

About

Everything about calling Santander UK from abroad

Who Santander UK is, and why customers call it from abroad

Santander UK is a UK bank offering current accounts, savings and ISAs, credit cards, loans, mortgages and insurance. It has a support page for customers who move abroad and a section of its lost card page for cards lost outside the UK. It also warns that it can only guarantee text message delivery, one-time passcodes included, to customers in the UK with a UK registered number. For a customer abroad who spots a payment they did not make, the phone may be the fallback, and Santander's fraud line is the freephone 0800 313 4321.

What 0800 313 4321 covers

Santander's How to report fraud page tells customers to call 0800 313 4321, a freephone number, to report fraud and scams, and says its fraud team is available 24 hours a day. That covers a payment you do not recognise, a card or account you think someone else is using, and a call, text or email that tried to get your details. For a suspicious email, Santander also gives a mailbox for forwarding it, phishing@santander.co.uk.

Santander says no one from Santander will ask for your PIN or a one-time passcode.

Why a UK 0800 number is awkward from a foreign line

0800 313 4321 is UK freephone, which is a domestic rule. From a foreign SIM or a hotel phone, a UK 0800 number may not connect at all, or your operator may bill it as an international call at its own rate. That matters most when a fraudulent payment is going through and every minute counts. Santander also suggests calling the number on the back of your card when you are in another country.

What Losali does with this number

Losali is an independent dialler that runs in a web browser. Your call travels over the internet and Losali's telecom carrier connects it to 0800 313 4321, so your foreign network only carries data. There is no app to install and no UK SIM to buy, and it works from a laptop or a borrowed phone. The panel at the top of this page shows the price before you call.

Before you call 0800 313 4321
  • Santander says it needs to check it's you when you call, and offers Voice ID for that.
  • If you cannot call from a registered number, it asks for your Personal ID, or a debit or credit card number, as well as your Security Number.
  • For a suspicious payment, note the date, amount and merchant.
  • Never give your PIN or a one-time passcode: Santander says it will not ask for them.

Freeze the card, and report fraud in the app

Santander lets you freeze and unfreeze debit and credit cards in its Mobile Banking app or in Online Banking. Card fraud can also be reported from the transaction itself: tap the payment, then Help with this transaction. Its digital assistant, Sandi, chats 24/7 when you are logged in and passes you to a real person when one is available. Santander says cards sent overseas arrive in 7 working days if a replacement is needed.

What kind of number is this?

Freephone 0800 / 0808. Free to call from inside the UK. With Losali the call is billed at €0.99/min, per whole minute, prepaid, and the price is shown before the call starts.

FAQ

Frequently asked questions

Is Santander's 0800 313 4321 open 24 hours?

Santander's How to report fraud page says its fraud team is available 24 hours a day and tells customers to call 0800 313 4321, its freephone fraud and scams line, anytime.

What will Santander ask me when I call?

Santander says it needs to check it's you when you call, and offers Voice ID for that. If you cannot call from a registered number, you are asked for your Personal ID or a debit or credit card number, as well as your Security Number. Santander says no one from Santander will ask for your PIN or a one-time passcode.

Can I report fraud to Santander without calling?

Card fraud can be reported in the Mobile Banking app from the transaction itself: tap it, then Help with this transaction. You can also freeze the card there, and suspicious emails go to phishing@santander.co.uk. Sandi, the digital assistant, chats 24/7 when you are logged in.

What kind of number is 0800 313 4321?

A UK 0800 freephone number, and Santander UK's line for reporting fraud and scams. Santander says its fraud team is available 24 hours a day. From a foreign network it may not connect, or your operator may charge it as an international call.

How do I report a payment I do not recognise to Santander?

In the Mobile Banking app, tap the transaction and choose Help with this transaction. By phone, Santander's fraud and scams line is 0800 313 4321, freephone, and its fraud team is available 24 hours a day.

Where do I send a suspicious Santander email?

Santander asks for suspicious emails to be forwarded to phishing@santander.co.uk. If you have already given details or a payment has gone out, call its fraud team on 0800 313 4321.

Is Losali part of Santander?

No. Losali is an independent service that connects a web browser to UK telephone numbers over the internet. It is not a bank, has no link with Santander UK and no access to your accounts or cards.

Can I call Santander UK on 0800 313 4321 from abroad with Losali?

Yes. Click the number on this page, sign in, allow the microphone and the call is placed onto the UK network from your browser. The per-minute price is shown before the call starts and a call that does not connect is never charged.

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