Introduction
Spam phone calls continue to be a growing nuisance for UK residents in 2025. With scammers becoming more sophisticated and relentless, millions of people receive unsolicited calls every week. These range from fake bank alerts and HMRC scams to bogus tech support and energy switch deals. To protect yourself and stay informed, it’s essential to know which phone numbers are most frequently reported as spam or fraudulent.
In this article, we’ve compiled a list of the top reported spam phone numbers in the UK this year. These numbers have been flagged by thousands of users on various spam reporting platforms and include a mix of robocalls, phishing scams, and aggressive sales tactics. We provide a table for easy reference, followed by a breakdown of each number’s reported behavior and tips on how to stay safe.
Table of Top Reported Spam Phone Numbers (UK, 2025)
| Phone Number | Type of Spam | Common Tactic Used | Risk Level | Report Frequency |
| 01887 224460 | Bank Scam | Claims of suspicious transactions | High | Very Frequent |
| 02843 729360 | HMRC Impersonation | Tax fraud threats | High | Frequent |
| 07520 619034 | Fake Delivery/Text Scam | Parcel undelivered SMS with links | Medium | Frequent |
| 0161 524 1776 | Energy Switching Scam | Fake energy contract renewals | Medium | High |
| 01743 817282 | Tech Support Scam | Claims of PC viruses or hacking | High | Very Frequent |
| 01942 901396 | Compensation Call | Claims about accident compensation | Low | Moderate |
| 0330 124 0404 | Bank/Loan Offer Scam | Offers fake loans or investments | Medium | High |
| 0331 630 3321 | Social Engineering Scam | Pretends to be from your bank | High | Frequent |
| 0333 303 5419 | Insurance Scam | Fake insurance updates or refunds | Medium | Frequent |
| 0161 531 7256 | Robocall Auto Message | Automated calls with no response | Low | Very Frequent |
Detailed Breakdown of Spam Numbers
Let’s take a closer look at each of these numbers and the kinds of spam activity they’ve been reported for.
1. 01887 224460 – Bank Scam
Type: Fraudulent Bank Alerts
Tactic: Callers claim there has been suspicious activity on your bank account, attempting to trick you into giving personal or banking details.
Reports Say:
Many users report this number posing as Barclays or HSBC, warning about “unauthorized purchases” and asking for verification details. Once engaged, they often redirect to a fake security team or ask for OTPs.
Advice: Hang up immediately and call your bank using the official number on their website. Never share personal or security information over the phone.
2. 02843 729360 – HMRC Impersonation Scam
Type: Government Scam
Tactic: Fake calls claiming you’re under tax investigation.
Reports Say:
Users describe receiving a robotic message stating that they owe money to HMRC and that failure to pay will result in legal action or arrest. Some calls redirect to fake “agents” who demand immediate payment.
Advice: HMRC never contacts individuals in this manner. Do not engage, and report the call to Action Fraud.
3. 07520 619034 – Delivery Text Scam
Type: Phishing via SMS
Tactic: Posing as Royal Mail, DPD, or Evri.
Reports Say:
Text messages from this number inform you of an “undelivered parcel” with a suspicious link. Clicking the link often leads to a fake login page to steal information or install malware.
Advice: Do not click links from unknown numbers. Go directly to the courier’s official website if expecting a delivery.
4. 0161 524 1776 – Energy Switching Scam
Type: Sales Scam
Tactic: Poses as an energy provider offering deals or claiming your contract has expired.
Reports Say:
The number is associated with aggressive sales calls pretending to be from “British Gas” or “E.ON,” pressuring people into switching providers or agreeing to contract renewals they don’t need.
Advice: Don’t agree to anything over the phone. If interested in changing suppliers, research independently.
5. 01743 817282 – Tech Support Scam
Type: IT Support Fraud
Tactic: Claiming your computer is compromised.
Reports Say:
Users report calls from this number saying they are from “Microsoft Support” or “BT,” alleging malware or hacking attempts. The caller asks for remote access to “fix” the problem.
Advice: Hang up. Never allow remote access to someone you don’t know.
6. 01942 901396 – Compensation Call
Type: Cold Call Compensation Scam
Tactic: Pretends to offer money for a recent accident.
Reports Say:
These are nuisance calls claiming you are entitled to compensation for an accident you were involved in. Many people who received the call hadn’t had any such incident.
Advice: These calls are typically fishing for personal data. Simply hang up.
7. 0330 124 0404 – Loan & Investment Scam
Type: Financial Scam
Tactic: Offers fake investment opportunities or loans.
Reports Say:
This number has been linked to scam investment companies offering high returns or urgent “loan approvals” that require an upfront fee.
Advice: Never pay upfront for a loan. Verify any financial service with the FCA register.
8. 0331 630 3321 – Social Engineering Scam
Type: Identity Theft Attempt
Tactic: Pretends to be from your bank or phone company.
Reports Say:
This number has been used to elicit personal and financial data under the guise of account verification or security breaches. Often the callers are well-rehearsed.
Advice: If in doubt, terminate the call and contact your bank directly using official contact methods.
9. 0333 303 5419 – Insurance Scam
Type: Car or Life Insurance Scam
Tactic: Offers refunds or overcharges for insurance.
Reports Say:
Several people noted calls from this number asking about recent insurance renewals and offering to help “reduce premiums” or issue a refund — after verifying sensitive information.
Advice: Avoid confirming or giving out any policy details. Contact your actual insurer if unsure.
10. 0161 531 7256 – Robocall Silence
Type: Automated or Dead Call
Tactic: Plays a short message or remains silent, possibly to verify active numbers.
Reports Say:
Callers either get silence or a quick message before disconnection. Some believe it’s a pre-recorded bot checking if the line is active for future targeting.
Advice: Block the number. If you receive several such calls, consider registering with the Telephone Preference Service (TPS).
Why Spam Calls Are Rising in 2025
Spam and scam calls are increasing due to:
- VoIP Technology: Cheap, easy-to-spoof numbers.
- AI Robocalling: Automated systems dialing thousands of numbers a minute.
- Data Leaks: Breaches providing contact details to bad actors.
- Global Scammers: Calls routed internationally but disguised as local numbers.
How to Protect Yourself
Here are a few quick safety tips:
- Don’t Answer Unknown Numbers – Let it go to voicemail.
- Use Call Blocking Apps – Apps like Truecaller or Hiya can identify known spam numbers.
- Report Suspicious Calls – Use websites like WhoCalledMe, or report to Action Fraud (UK).
- Enable Caller ID Protection – Some UK mobile networks offer built-in spam call filters.
- Don’t Share Personal Info – Banks, HMRC, and the NHS will never ask for full personal or financial info by phone.
Reporting Spam Numbers
You can report spam calls through the following services:
- Action Fraud: https://www.actionfraud.police.uk
- Ofcom: https://www.ofcom.org.uk
- TPS (Telephone Preference Service): https://www.tpsonline.org.uk
These agencies help identify trends and shut down offending numbers.
Conclusion
Spam phone numbers are not just an annoyance — they can pose serious risks to your finances and identity. Being aware of the most commonly reported numbers in the UK for 2025, such as those listed above, can help you stay ahead of potential scams.
By remaining cautious, verifying identities, and reporting spam, we can all play a part in reducing the success rate of these fraudulent operations.
