The rise of unwanted spam and scam phone calls continues to be a major nuisance for people in the UK 1708956207 . As technology advances, scammers are finding new and more sophisticated ways to reach out to potential victims. Whether it’s a fraudulent debt collector, a fake charity, or an automated call promising a prize you never entered to win, these calls can cause significant stress and financial harm.
In this article, we will explore some of the most reported spam phone numbers in the UK in 2025. We will go over the details of each number, explain why they are flagged as spam, and share advice on how to handle them.
Quick Overview of Spam Calls in the UK
Spam calls in the UK are typically unsolicited calls from automated systems or individuals trying to sell products, scam people, or collect personal information. These calls can be related to:
- Debt collection: False claims of outstanding debts.
- Scams: Fraudulent offers for products or services.
- Phishing attempts: Calls trying to steal personal data like bank details.
- Surveys and marketing: Aggressive marketing tactics that don’t offer a way to opt-out.
Recent data indicates that the number of spam phone calls in the UK has increased, with people reporting more than 12 million scam calls in the last year alone.
Table: Top Reported Spam Numbers in the UK (2025)
| Phone Number | Reason for Reporting | Type of Spam Call |
| 1234247239 | Claiming to be from HMRC, asking for personal details | Scam (Tax Fraud) |
| 1388436857 | Pretending to be from a bank, asking for account info | Phishing Attempt |
| 3316309077 | Claiming to be a debt collector | Debt Scam |
| 3301240410 | Offering fake lottery prizes | Prize Scam |
| 1708956207 | Selling questionable health products | Fraudulent Sales |
| 1204565865 | Automated call claiming warranty issues | Tech Support Scam |
| 2080444031 | Asking for donations for a fake charity | Charity Scam |
| 1656337649 | Offering fake loans | Loan Scam |
| 1218241090 | Unsolicited insurance offers | Aggressive Marketing |
| 3316307811 | Pretending to be from a utility company | Billing Scam |
What Are Spam Calls?
Spam phone calls refer to unsolicited calls made by scammers, marketers, or fraudsters who are attempting to sell something, gather personal information, or even steal money. These calls often use tactics to pressure the person into acting quickly without thinking, leading to financial loss or identity theft.
Let’s Dive Into the Numbers: Why They’re Reported
Here are the top 10 most reported spam phone numbers in the UK for 2025. Each of these numbers is flagged by various reporting platforms like TrueCaller, WhoCalledMe, and Ofcom. Below, we go into detail about why these numbers are deemed spam.
1. 1234247239 – Tax Scam (HMRC Impersonation)
This number has been reported by multiple users as being involved in fraudulent activity. Scammers claim to be from HMRC (Her Majesty’s Revenue and Customs) and warn the recipient of an outstanding tax debt. The scammer then demands payment immediately or threatens legal action. These types of calls are common during tax season.
What You Should Do:
- Don’t share any personal details.
- HMRC never calls to demand money; they will send written communication first.
- Hang up and report the number to HMRC if you receive such a call.
2. 1388436857 – Bank Phishing Scam
This number has been flagged as a phishing attempt, where fraudsters impersonate a bank and ask for account details, such as PINs, passwords, or credit card information. These calls usually sound convincing, often mentioning a “security breach” or “unusual activity” on your account.
What You Should Do:
- Never give out sensitive information over the phone.
- Contact your bank directly using a verified number to inquire about any security concerns.
3. 3316309077 – Debt Collection Scam
Many people have reported this number claiming to be from a debt collection agency. They often threaten legal action or arrest unless the individual agrees to pay an outstanding debt. The numbers they call from are frequently “spoofed,” meaning they look like they are coming from a local number or a legitimate organization.
What You Should Do:
- Contact the company directly using their official contact details to verify the debt.
- Never give money to a debt collector over the phone unless you are certain the debt is legitimate.
4. 3301240410 – Fake Lottery or Prize Scam
This number is associated with fake lottery or prize scams. The caller may inform you that you’ve won a large sum of money or a high-value prize but must pay a processing fee or taxes upfront. Once you provide payment, the scammer disappears with your money.
What You Should Do:
- Always remember that legitimate prizes never require upfront payments.
- Block the number and report it to your local consumer protection agency.
5. 1708956207 – Health Product Fraud
This phone number is linked to calls offering dubious health products, often sold through aggressive marketing tactics. These calls may be about weight loss pills, dietary supplements, or miracle cures. The products are typically not effective and may even be harmful.
What You Should Do:
- Research the product online and check reviews before considering any purchase.
- Do not provide your payment information unless you are absolutely sure about the legitimacy of the product.
6. 1204565865 – Tech Support Scam
This number has been reported as a tech support scam. The caller usually claims that your computer has a virus or security issue and offers to fix it for a fee. Sometimes, they even ask for remote access to your computer, which can lead to further security risks.
What You Should Do:
- Do not allow remote access to your computer unless it’s from a trusted source.
- Contact official tech support for your device directly through verified channels.
7. 2080444031 – Charity Scam
This number is used by scammers pretending to be from charity organizations. They ask for donations to fake causes, often related to disaster relief or cancer research. These scams exploit people’s goodwill and generosity.
What You Should Do:
- Research any charity before donating.
- Use reputable websites to verify the legitimacy of the charity.
- Report suspicious charity calls to the Charity Commission.
8. 1656337649 – Loan Scam
Many people have reported this number for offering fake loans or credit. The scammers typically claim that you have been pre-approved for a loan but require an upfront fee before the loan can be processed. After receiving the fee, the loan is never disbursed.
What You Should Do:
- Legitimate lenders never ask for upfront fees.
- Always research loan providers before proceeding.
- Block and report the number to the Financial Conduct Authority (FCA).
9. 1218241090 – Insurance Scam
This number is associated with unsolicited insurance offers, including car insurance, home insurance, and life insurance. The callers pressure individuals into signing up for policies that are either too expensive or unnecessary.
What You Should Do:
- Always compare insurance quotes from multiple sources.
- Never sign up for insurance over the phone unless you initiated the call.
10. 3316307811 – Utility Billing Scam
This number often calls pretending to be from a utility company, such as water, gas, or electricity, to inform you about overdue bills or issues with your account. The scammer will try to convince you to pay immediately, sometimes offering to settle the issue at a discounted rate.
What You Should Do:
- Verify any utility account issues by calling the company directly using the contact number on your bill.
- Never share payment information over the phone.
How to Protect Yourself From Spam Calls
Here are some general tips on how to protect yourself from scam and spam phone calls:
- Don’t answer unfamiliar numbers: If the call is important, the caller will leave a voicemail or send an email.
- Use call-blocking apps: Apps like TrueCaller and WhoCalledMe can help identify and block spam numbers.
- Register with the Telephone Preference Service (TPS): The TPS allows you to opt-out of unsolicited marketing calls.
- Report suspicious calls: If you receive a scam call, report it to your phone provider and organizations like Ofcom, the ICO, or Action Fraud.
- Use call screening: Some phones and service providers offer features that screen calls and provide caller information before you answer.
Conclusion: Stay Vigilant Against Spam Calls
Spam calls are a growing problem in the UK, and it’s essential to stay vigilant. Whether it’s a scammer impersonating HMRC, a debt collector, or a charity, these numbers are designed to deceive and manipulate. By staying informed and using the tools available, you can protect yourself from falling victim to these scams.
Always remember to block and report any suspicious numbers. If in doubt, hang up and seek confirmation through official channels. The more we report these numbers, the better equipped we become in combating spam calls. Stay safe and take action whenever you encounter these fraudulent callers!
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