Spam phone calls remain one of the most persistent nuisances for mobile and landline users across the UK. In 2025, this issue has shown no signs of slowing down, despite regulatory efforts and mobile security enhancements. Whether it’s scam attempts, phishing operations, or relentless marketing campaigns, thousands of reports continue to flood telecom watchdogs and consumer protection forums daily.
In this article, we delve into some of the most reported spam phone numbers in the UK in 2025. These numbers have been flagged repeatedly by users for deceptive, annoying, or potentially criminal activity. We also provide context around the nature of these calls, what users are saying, and how to deal with them.
Table of Top Reported Spam Phone Numbers (2025)
| Phone Number | Location | Type of Spam | Common Complaints | Risk Level |
| 0331 630 9046 | UK Wide (Non-Geographic) | Debt Scam / Fake Gov. Calls | Pretending to be from HMRC or energy company | High |
| 0191 823 9030 | Newcastle Upon Tyne | Investment Scam | Bitcoin and Forex scam investment schemes | High |
| 01204 935 816 | Bolton | Insurance / Claims Scam | Fake accident claims | Medium |
| 07520 619 034 | Mobile | Phishing / OTP Theft | SMS asking for codes or bank info | High |
| 0161 524 1776 | Manchester | Robocall / Auto Voice | Silent calls, automated messages | Medium |
| 01743 817 282 | Shrewsbury | Tech Support Scam | Fake Microsoft or broadband issues | High |
| 0333 303 5419 | UK Wide (Non-Geographic) | Energy Tariff Scam | Calls offering fake energy plans | High |
| 0161 526 3553 | Manchester | Business Loans / Fake Bank | Posing as high street banks | High |
| 01792 722 689 | Swansea | Student Loan Scam | Fake student loan forgiveness schemes | Medium |
| 01273 036 584 | Brighton | Charity Donation Fraud | Impersonating charities, fake fundraising | Medium |
Detailed Breakdown of Spam Numbers
0331 630 9046 – Impersonation of Government Departments
This non-geographic number has been at the top of consumer complaint lists. Many report that callers claim to be from HMRC, the Department for Work and Pensions (DWP), or a major energy provider. The scam usually involves threats about unpaid bills or promises of tax refunds.
User Reports Say:
- Aggressive tone demanding payment.
- Threats of arrest or court summons.
- Requests for bank details or personal information.
Tip: The government will never call asking for bank information or threaten arrest over the phone. Hang up and report the number.
0191 823 9030 – Investment Scam from Newcastle Area
Reported frequently in relation to cryptocurrency or Forex trading scams, this number is used by fraudsters claiming to offer guaranteed investment returns. Victims are often lured into giving out personal details or even sending money.
User Reports Say:
- Promises of 10x returns in a month.
- Posing as financial advisers or brokers.
- Fake company websites to appear legitimate.
Tip: If something sounds too good to be true, it usually is. Always verify financial services with the FCA.
01204 935 816 – Bolton-Based Accident Claims Scam
Callers from this number typically reference a car accident that never happened. It’s a classic “have you been in an accident that wasn’t your fault?” scam, aiming to gather information or file false insurance claims.
User Reports Say:
- Call center-style background noise.
- Repeated calls daily despite blocks.
- Requests for driver details or car registration numbers.
Tip: Do not confirm or deny any personal data. Hang up and block the number.
07520 619 034 – Mobile Phishing Attempt
This mobile number is linked to SMS phishing (smishing) attempts, often mimicking banks, PayPal, or delivery services like Royal Mail.
User Reports Say:
- Message includes a suspicious link.
- Asks to verify account due to “unauthorized access”.
- Attempts to steal OTP codes or passwords.
Tip: Never click on links from unknown sources. Visit the official website directly.
0161 524 1776 – Robocalls and Silent Line Scans
Check Recent Spamming Numbers:
01274041023: :
: : 02045792608: : 7520615358: : 1202158180
This Manchester-based number has been flagged for automated calls, often silent or playing a brief robotic message. These types of calls can be a precursor to identifying active numbers for further scam attempts.
User Reports Say:
- No one on the line.
- Repeated daily calls, especially during work hours.
- Hangs up after 5–10 seconds.
Tip: Use call-blocking apps to prevent robocalls. Reporting silent calls helps trace these activities.
01743 817 282 – Shrewsbury Tech Support Scam
Scammers from this number often impersonate Microsoft or broadband providers, claiming your computer has been hacked or infected with a virus.
User Reports Say:
- Instructions to download remote-access software.
- Warning that “hackers are watching your computer”.
- Pushy tone to instill urgency and fear.
Tip: No tech company will cold-call you about viruses. Never allow remote access to your device from unknown sources.
0333 303 5419 – Energy Tariff Scam
Another non-geographic number linked to false energy tariff promotions. Scammers claim they can drastically reduce your energy bills if you “sign up today.”
User Reports Say:
- Caller pretends to be from British Gas or EDF.
- Asks for current bill details.
- Pushy sales tactics with limited-time offers.
Tip: Always verify tariff offers by calling the provider directly. Don’t share account numbers over unsolicited calls.
0161 526 3553 – Fake Business Loan Offers
This number often pretends to represent legitimate UK banks or loan companies, trying to lure small business owners into signing up for fake funding or handing over sensitive financial data.
User Reports Say:
- “Pre-approved” business loan offers.
- Caller ID spoofing major bank names.
- Requests for company bank details.
Tip: Legit lenders don’t cold-call with loan approvals. Hang up and double-check with your actual bank.
01792 722 689 – Swansea Student Loan Scam
Especially targeting young adults and recent graduates, this number often claims to represent the Student Loan Company (SLC) or “Student Finance UK.”
User Reports Say:
- Offers to “forgive” a portion of your loan for a fee.
- Requests for login details to SLC accounts.
- Promises of secret government schemes.
Tip: The Student Loan Company doesn’t cold-call borrowers. Log in to your account independently to check for messages.
01273 036 584 – Charity Donation Fraud from Brighton
This number has been associated with charity scams, where callers impersonate known organizations like the NSPCC or Cancer Research UK.
User Reports Say:
- Emotional appeals to donate over the phone.
- Pressure to give card details immediately.
- False promises of follow-up information.
Tip: Always donate directly via official charity websites. Never give payment details over cold calls.
How to Deal With Spam and Scam Calls
While these ten numbers are among the most reported, they are by no means the only ones. Scammers often rotate numbers, spoof legitimate lines, and use burner phones. Here are steps you can take:
- Use Call Blocking Tools: Enable call filtering on your mobile device, or install apps like Hiya, Truecaller, or RoboKiller.
- Register with TPS: The Telephone Preference Service helps reduce marketing calls (but not scams).
- Report Suspicious Numbers: Use services like Ofcom, Action Fraud, or your mobile provider’s spam reporting number (e.g., 7726).
- Never Give Out Personal Data: If someone asks for banking info, NI numbers, or passwords, hang up.
- Educate Family Members: Especially elderly relatives, who are often targeted more frequently.
Conclusion
Spam and scam phone calls continue to evolve in complexity and frequency in the UK. With thousands of reports each month, staying vigilant is essential. The numbers listed in this article represent just a snapshot of the broader problem in 2025. By understanding how these scams work and spreading awareness, we can all contribute to a safer and more informed community.
Remember: Don’t trust the caller ID alone. If in doubt, hang up and verify independently.
Explore the top reported spam phone numbers in the UK for 2025, including 03316309046, 01918239030, 01204935816, 07520619034, and more. Learn about scams, fraud, phishing, and how to protect yourself from spam calls.
