Top Reported Spam Phone Numbers in the UK (2025)

Phone scams have become a persistent problem in the UK, with countless individuals receiving unwanted and often fraudulent calls each day. In 2025, a handful of numbers have emerged as the most reported for spam, scams, and nuisance calls. Understanding these numbers can help you stay vigilant and avoid potential scams. Here, we’ve compiled a list of the most frequently reported numbers, including details about their tactics, reported incidents, and advice on how to handle them.

Quick Overview of Top Spam Numbers

Phone Number	Location	Common Issues	Possible Caller ID	Risk Level
02080587791	London	Scams, Robocalls	Unidentified	High
01916968300	Sunderland	Financial Scams, Fake Surveys	Unidentified	High
02080448944	London	Debt Collection Scams	Unidentified	High
03316306277	UK-wide	Insurance Scams, PPI	Unidentified	High
03316306599	UK-wide	Tech Support Scams	Unidentified	High
02882480140	Northern Ireland	Prize Scams, Robocalls	Unidentified	High
020 3912 7474	London	Energy Tariff Scams	Unidentified	High
01656337649	Bridgend	Fake Charity Calls	Unidentified	High
01544329845	Cannock	Investment Scams	Unidentified	High
03330038533	UK-wide	Phishing, Robocalls	Unidentified	High

02080587791 – London Nuisance Calls

This London-based number has been frequently reported for making repeated nuisance calls, often involving aggressive sales pitches or fake debt collection attempts. Many recipients have noted that the caller ID often appears as “unavailable” or “private,” making it harder to trace. If you receive a call from this number, it’s best to ignore it or block it immediately to avoid potential scams.

01916968300 – Sunderland Scam Calls

Callers using this number typically pretend to represent financial institutions or survey companies, attempting to gather personal data. Many people have reported that these calls are persistent, with repeated attempts to gather sensitive financial information. Always verify the identity of the caller before sharing any details.

02080448944 – Debt Collection Scams

This London-based number has been linked to fake debt collection scams, where callers pressure victims into making immediate payments for nonexistent debts. These tactics often include threats of legal action or credit score damage, creating a sense of urgency to extract payments.

03316306277 – Insurance and PPI Scams

Frequently reported across the UK, this number is known for attempting to sell fake insurance policies or offer misleading PPI claims. Be cautious if you receive a call from this number, as it is often used to gather sensitive financial details.

03316306599 – Tech Support Scams

Tech support scams are a common tactic associated with this number. Callers often claim to be from well-known tech companies, warning you about a supposed issue with your computer or device. They may attempt to gain remote access to your device or request payment for unnecessary services.

02882480140 – Northern Ireland Prize Scams

This number, originating from Northern Ireland, is often linked to prize and lottery scams. Victims are told they’ve won a significant prize but must pay a fee or provide personal information to claim it. These scams can be highly convincing but are ultimately designed to steal your money or data.

020 3912 7474 – Energy Tariff Scams

Energy-related scams are commonly reported from this number, with callers offering misleading deals on energy tariffs or pretending to be from legitimate energy providers. Be cautious and verify the authenticity of any energy-related calls before taking any action.

01656337649 – Fake Charity Calls

This Bridgend-based number has been reported for making fake charity calls, often preying on the goodwill of recipients. Scammers may use emotional appeals to extract donations for nonexistent causes.

01544329845 – Investment Scams

This number is linked to investment scams, where callers pressure victims into making risky or fraudulent investments. These calls can be highly aggressive and persistent, often using false promises of high returns.

03330038533 – Phishing and Robocalls

A common number for phishing and robocalls, this line often plays pre-recorded messages designed to trick you into sharing personal information. Be cautious if you receive such calls and never provide sensitive information over the phone.

How to Protect Yourself from Spam Calls

To stay safe from these and other scam numbers:

Use call-blocking apps like TrueCaller or WhoCalledMe.
Register with the Telephone Preference Service (TPS) to reduce unwanted calls.
Report suspicious numbers to the Information Commissioner’s Office (ICO) or Action Fraud.
Never share personal or financial information over the phone unless you are sure of the caller’s identity.
Stay updated on common phone scams to recognize the warning signs.

Conclusion

As phone scams continue to evolve, it is essential to stay informed and vigilant. Recognizing these top spam numbers can help you avoid falling victim to fraudulent calls. Block these numbers, report them when possible, and educate those around you to create a safer communication environment in the UK.

Frequently Asked Questions (FAQs)

Q1. How do I report a spam number in the UK?
You can report spam numbers to the ICO, Action Fraud, or use tools like TrueCaller and WhoCalledMe.

Q2. Can I block these numbers on my mobile phone?
Yes, most smartphones have built-in features for blocking specific numbers.

Q3. Why do these numbers keep calling me?
Scammers often use auto-dialing software to reach as many people as possible.

Q4. Are these numbers ever legitimate?
In rare cases, legitimate businesses may use these numbers, but it’s best to verify before engaging.

Q5. How can I avoid becoming a victim of phone scams?
Stay informed, use call-blocking tools, and never share sensitive information over the phone.