Unwanted phone calls have become a common nuisance, with spam and scam calls on the rise in the UK. Whether it’s robocalls, fraudulent schemes, or aggressive telemarketing, these interruptions can be frustrating and potentially risky. In this guide, we will explore some of the most frequently reported spam phone numbers in the UK for 2025, helping you identify and protect yourself from these unwanted contacts.
Why Spam Calls Are a Growing Concern
Spam calls can disrupt your day, invade your privacy, and sometimes lead to financial loss. They often involve:
- Scams: Fraudulent attempts to steal your personal or financial information.
- Robocalls: Automated messages pushing products or services.
- Phishing: Calls designed to trick you into revealing sensitive details.
- Nuisance Marketing: Aggressive telemarketing tactics that ignore your preferences.
Understanding the most commonly reported numbers can help you stay ahead and protect your privacy.
Top 10 Reported Spam Phone Numbers in the UK (2025)
| Phone Number | Potential Purpose | Common Complaints | Recommended Action |
| 01615274971 | Scam / Fraud | Fake banking, HMRC threats | Block and report |
| 01702660930 | Insurance Sales | Unsolicited offers, aggressive sales | Block and report |
| 03301248035 | Debt Collection | Persistent calls, misleading claims | Block and report |
| 01423645008 | Energy Scams | False energy savings, high-pressure sales | Block and report |
| 07441107428 | Phishing Attempts | Fake delivery messages, personal data requests | Block and report |
| 01615316278 | Financial Scams | Fake investment opportunities | Block and report |
| 01234237085 | Tech Support Scams | False computer issues, remote access attempts | Block and report |
| 03332421450 | Survey Scams | Fake surveys, data collection | Block and report |
| 01615316131 | Banking Scams | Fake account verification, card fraud | Block and report |
| 01214243333 | Government Impersonation | Fake tax refunds, HMRC threats | Block and report |
In-Depth Look at Each Number
01615274971 – Fake Banking Scams
This number has been widely reported for attempts to impersonate banks and government agencies like HMRC. Callers often claim urgent issues with your account or unpaid taxes, demanding immediate action to avoid severe penalties. These tactics are designed to scare you into providing sensitive financial details or making payments.
01702660930 – Aggressive Insurance Sales
Frequently associated with aggressive insurance marketing, this number is known for pushing unwanted policies or upgrades. Many people report repeated, high-pressure calls despite requesting to be removed from the call list.
03301248035 – Misleading Debt Collection
This number is often linked to fake debt recovery operations. Callers might pressure you into paying debts you do not owe or use scare tactics to extract payments quickly. Always verify the legitimacy of any debt claims before making a payment.
01423645008 – Energy Saving Scams
Callers from this number typically promise significant energy savings or special discounts, but their real aim is often to gather personal information or sign you up for costly, unnecessary services.
07441107428 – Phishing and Fake Delivery Alerts
This mobile number is commonly used for phishing attempts, often involving fake delivery messages or account verification scams. Be cautious if you receive unexpected messages from this number.
01615316278 – Investment Fraud
Known for fake investment offers, this number has been associated with schemes promising high returns with minimal risk. Always research thoroughly before committing to any investment.
01234237085 – Tech Support Scams
Scammers using this number often pretend to be from well-known tech companies, claiming your computer has critical issues and pushing you to install remote access software.
03332421450 – Fake Surveys and Data Mining
This number is frequently reported for fake survey scams. These calls aim to gather personal data under the guise of customer feedback or market research.
01615316131 – Banking Verification Scams
Similar to the first number on this list, this one is known for fake account verification calls, often trying to trick you into revealing banking details.
01214243333 – Government Impersonation
Commonly associated with fake HMRC or government refund scams, this number is known for attempting to collect personal information or demand immediate payments to avoid legal action.
How to Protect Yourself from These Numbers
- Block and Report: Use your phone’s built-in blocking feature or apps like TrueCaller.
- Register with TPS: Sign up for the Telephone Preference Service (TPS) to reduce unwanted calls.
- Check Callers: Use tools like WhoCalledMe or Ofcom to verify unknown numbers.
- Be Skeptical: Never share sensitive information over the phone unless you are sure of the caller’s identity.
Take Control of Your Phone
Don’t let scammers take control of your day. Stay informed, block suspicious numbers, and report them to the appropriate authorities. Together, we can reduce the impact of spam calls and protect our privacy.
Frequently Asked Questions (FAQs)
Q1: What should I do if I receive a suspicious call?
Block the number, report it, and avoid sharing any personal details.
Q2: How can I block these numbers?
Most smartphones have built-in blocking features, and apps like TrueCaller offer advanced protection.
Q3: Are all spam calls illegal?
Not necessarily, but many violate privacy regulations if they disregard your preferences.
Q4: Can I report these numbers to authorities?
Yes, you can report them to TPS, ICO, or Ofcom for further action.
Q5: Will blocking the number stop all calls?
Blocking a number prevents it from contacting you, but the scammers may use different numbers over time.
Meta Description:
Discover the top reported spam phone numbers in the UK for 2025, including 01615274971, 01702660930, 03301248035, 01423645008, 07441107428, 01615316278, 01234237085, 03332421450, 01615316131, and 01214243333. Learn how to block, report, and protect yourself from unwanted calls.
