Top Reported Spam Phone Numbers In the UK (2025)

In 2025, many mobile and landline users across the United Kingdom are increasingly receiving suspicious phone calls from numbers they don’t recognize. Some of these calls can be harmless, but a significant portion of them are spam, scams, or robocalls designed to trick unsuspecting victims into revealing personal information, making purchases, or even falling victim to financial fraud. As part of ongoing efforts to raise awareness about these issues, it’s important to take a closer look at some of the most reported spam phone numbers in the UK.

In this article, we will explore a selection of frequently reported spam numbers that have been causing alarm for UK phone users. We’ll provide an overview of each number, how it’s being used, and what you can do to protect yourself.

Overview of the Most Reported Spam Phone Numbers

Here is a table summarizing the top spam phone numbers reported in the UK in 2025. These numbers have been flagged across multiple sources, including tools like TrueCaller, WhoCalledMe, and official reports from Ofcom and the ICO.

Phone Number	Type of Spam	Common Reported Issue	Source of Complaint
1887224460	Telemarketing	Unsolicited marketing calls	WhoCalledMe, TrueCaller
2843729360	Scam/Fraudulent	Fake bank or financial services	Ofcom, TrueCaller
7520619034	Robocall	Automated scam recordings	WhoCalledMe, ICO
1615241776	Insurance Scam	Fake insurance offers	TPS, ICO
1743817282	Fraudulent Services	Debt collection scam	WhoCalledMe, TrueCaller
1942901396	Technical Support Scam	Fake tech support calls	TrueCaller, Ofcom
3301240404	Robocall	Unsolicited marketing	ICO, TPS
3316303321	Scam/Fraudulent	Pretending to be a government official	TrueCaller, Ofcom
3333035419	Financial Fraud	Credit card fraud calls	WhoCalledMe, ICO
1615317256	Loan Scam	Fake loan offers	TPS, TrueCaller

1887224460 – Telemarketing Scam

The number 1887224460 is frequently reported for making unsolicited telemarketing calls. Most of the complaints describe the caller as trying to sell services or products without prior consent, which is illegal in many instances. This type of telemarketing often targets vulnerable individuals, offering them fake deals or deals that sound too good to be true, only to request personal information later.

Common Complaints

The calls are often made at inconvenient times.
The caller uses aggressive tactics to pressure the recipient into signing up for services.
The numbers are sometimes spoofed, so the caller ID looks legitimate.

Protection Tips

Register your number with the Telephone Preference Service (TPS) to block unsolicited marketing calls.
Hang up immediately if you receive a cold call, especially one that seems too pushy or offers something that sounds too good to be true.

2843729360 – Fraudulent Bank/Financial Services Call

Reports of the number 2843729360 reveal that it is being used in fraudulent schemes where the caller pretends to be from a bank or other financial institution. These scammers often attempt to steal personal banking details or trick victims into transferring money.

Common Complaints

The caller pretends to be from a trusted financial institution, such as a bank, claiming to alert the recipient about suspicious activity.
Requests for sensitive information such as account numbers, passwords, or personal identification details are common.

Protection Tips

Always verify any financial communication by directly contacting your bank or financial institution using known, legitimate contact details.
Never share personal or financial information over the phone unless you’re certain about the caller’s identity.

7520619034 – Robocall Scam

7520619034 is flagged for robocalls, where automated messages are used to scam recipients. These messages often include fake notifications about urgent actions needed on accounts or requests to call back a number that is later found to be a scam.

Common Complaints

Automated voice recordings ask you to press a number or call back an unfamiliar number.
The message might claim your account has been compromised or that you need to take urgent action.
The call often mimics legitimate companies, including tech support or bank alerts.

Protection Tips

Do not engage with any robocalls. If you feel that the message might be legitimate, call the company or organization directly using verified contact information.
Register with the Do Not Disturb service to block unsolicited calls.

1615241776 – Insurance Scam

The number 1615241776 is frequently reported in connection with insurance scams. Often, these calls promise low-cost insurance or special deals that sound too good to be true.

Common Complaints

The callers offer attractive insurance policies with very low premiums.
These policies often turn out to be non-existent or overpriced once a victim signs up.
They often pressure people into immediate decisions without giving them adequate time to consider the offer.

Protection Tips

Always be cautious when receiving unsolicited offers, especially when the caller pressures you into making quick decisions.
Hang up and research the company before making any decisions. You can check their legitimacy using platforms like TrueCaller or Ofcom.

1743817282 – Debt Collection Scam

1743817282 has been flagged as a number used by scammers impersonating debt collection agencies. These fraudulent callers attempt to scare victims into paying debts that they don’t owe.

Common Complaints

The callers claim that the recipient owes money for unpaid bills or loans.
They use intimidation and threats of legal action or arrest to force victims into paying quickly.
The calls often come with a sense of urgency, warning that failure to pay will lead to severe consequences.

Protection Tips

If you receive such a call, ask for written proof of the debt and hang up.
Do not give any payment information over the phone, especially if the call seems suspicious.

1942901396 – Tech Support Scam

The number 1942901396 is associated with scammers pretending to be tech support agents from legitimate companies. They often tell the recipient that their computer is infected with malware or viruses and that they need immediate access to fix the issue.

Common Complaints

The caller may ask for remote access to your device, putting your personal data at risk.
They may ask for payment for unnecessary services or software.
Often, the caller impersonates well-known tech companies like Microsoft or Apple.

Protection Tips

Do not give remote access to your device or pay for any unsolicited services.
If you think your device might have an issue, contact a professional using official support channels.

3301240404 – Unsolicited Marketing Calls

3301240404 is primarily reported for making unsolicited marketing calls. These calls usually involve trying to sell various services, from home repairs to subscriptions for products that the recipient has never heard of.

Common Complaints

The calls are persistent and often repeat, even after being told to stop.
Many recipients have mentioned that the services offered are irrelevant to their needs.

Protection Tips

You can block the number or add it to the blacklist on your phone.
Consider using a call-blocking app to manage unsolicited calls.

3316303321 – Fraudulent Government Call

3316303321 has been reported as a scam where the caller pretends to be a government official. The scammer may claim to be from the tax office or another government body and demand payments or personal information.

Common Complaints

The scammer claims that the recipient owes money to the government or faces legal consequences.
They may use aggressive tactics to force individuals into compliance.

Protection Tips

Government agencies will never ask for personal information or payment over the phone.
Hang up and call the relevant government department directly using known contact details.

3333035419 – Credit Card Fraud Scam

3333035419 is reported as a number used in credit card fraud scams. These calls often claim that there is a problem with your credit card or offer a credit card with benefits that are too good to be true.

Common Complaints

The caller may claim there is a fraud alert on your credit card or that your account is compromised.
They often ask for sensitive information like your credit card number, expiry date, or PIN.

Protection Tips

Never provide any personal or financial information to unsolicited callers.
If you suspect a fraud attempt, contact your bank directly.

1615317256 – Loan Scam

Finally, 1615317256 has been linked to loan scams. These callers promise quick loans with easy approval processes, but the goal is often to steal money through application fees or other fraudulent means.

Common Complaints

The callers promise a quick loan without a credit check.
They often require an upfront fee before any money is loaned.
After payment, the loan never materializes.

Protection Tips

Do not pay any fees upfront for loans.
Research the company before agreeing to any loan offers.

Protecting Yourself from Spam Calls

Spam phone calls are a serious issue that can lead to identity theft, financial loss, and unnecessary stress. To protect yourself:

Use call-blocking apps such as TrueCaller or WhoCalledMe.
Register your number with the Telephone Preference Service (TPS) to reduce marketing calls.
Never share personal information over the phone, especially with unsolicited callers.

Conclusion: What You Can Do About Spam Calls in the UK

Spam calls remain a serious problem in the UK, but by being informed and cautious, you can protect yourself. The numbers listed above represent just a fraction of the scam and spam calls affecting UK residents. Stay vigilant, report suspicious numbers to organizations like Ofcom, ICO, or TrueCaller, and consider blocking numbers from unrecognized callers. Remember, if a call sounds too good to be true, it probably is!