Top Reported Spam Phone Numbers in the UK (2025)

In today’s fast-paced digital world, receiving spam or scam calls has become a common nuisance for many mobile users. These unwanted calls often come from unfamiliar numbers, causing frustration, confusion, and sometimes even financial losses. For those who live in the UK, dealing with spam calls has become a regular challenge. In this article, we will discuss the top reported spam phone numbers in the UK for 2025 and offer valuable insights into how you can protect yourself from these intrusive calls.

Spam calls can come in various forms, including fraudulent marketing, scams, or even malicious attempts to steal personal information. Recognizing these numbers and knowing how to handle them can significantly reduce your exposure to these types of calls. We will also provide a table of the most frequently reported spam phone numbers in the UK and dive deeper into each of them.

Quick Overview of Top Reported Spam Numbers

Here is a table summarizing the most reported spam phone numbers in the UK:

Phone Number	Location/Area	Reported Issue	Caller Type
01615274971	Manchester	Persistent marketing calls	Telemarketing
01702660930	Essex	Fraudulent financial services	Scam
03301248035	National	Recorded message, fake prize scams	Scam
01423645008	Wakefield	Loan/credit services, aggressive	Scam
07441107428	National	Robocall for fake tech support	Scam
01615316278	Manchester	Car insurance scam	Scam
01234237085	Peterborough	Unsolicited energy provider offer	Telemarketing
03332421450	National	Automated call for fake charity	Scam
01615316131	Manchester	Loan services, high pressure tactics	Scam
01214243333	Birmingham	Fake government survey scam	Scam

1. 01615274971: Telemarketing Calls from Manchester

The number 01615274971 is one of the most reported spam numbers in the UK, frequently identified as a telemarketing call originating from Manchester. The calls usually involve persistent marketing efforts related to various products or services, often unrelated to the recipient’s interests. While telemarketing itself isn’t inherently harmful, the frequency and intrusion of such calls are seen as a major nuisance by many recipients.

What You Can Do:

If you receive calls from this number, you may want to consider blocking it directly through your phone settings. Alternatively, reporting this number to services such as WhoCalledMe or TrueCaller can help identify the caller more accurately and keep a record of the calls.

2. 01702660930: Fraudulent Financial Services from Essex

This number, 01702660930, has been linked to fraudulent financial services scams, often involving false claims of loan approvals or debt relief programs. Victims of this scam are often pressured into revealing sensitive information like bank account numbers or credit card details.

What You Can Do:

If you receive a call from 01702660930, hang up immediately. It’s important not to provide any personal or financial details over the phone, especially if the caller is unknown. Report the number to the Information Commissioner’s Office (ICO) or the Financial Conduct Authority (FCA) if you suspect a scam.

3. 03301248035: Fake Prize Scams

The number 03301248035 is associated with recorded messages that claim the recipient has won a prize or lottery, often leading to a scam. These calls typically prompt individuals to provide personal information or pay a fee to claim their supposed prize.

What You Can Do:

Never trust prize-related calls from unknown numbers, and avoid sharing any personal details. Use call-blocking apps like TrueCaller to identify and report these numbers.

4. 01423645008: Loan and Credit Scams from Wakefield

01423645008 is another frequently reported spam number from Wakefield, involved in offering fake loan and credit services. These calls often come with enticing offers like fast cash loans, but they may require upfront fees or personal information, leading to financial loss.

What You Can Do:

Always be cautious of unsolicited loan offers and avoid giving out personal or financial details over the phone. Contact legitimate financial institutions directly if you’re interested in loans or credit.

5. 07441107428: Tech Support Scam Calls

This number, 07441107428, is known for calling individuals with fake tech support scams. The callers claim to represent a tech company, such as Microsoft or Apple, and state that the recipient’s computer is infected with viruses or malware, requiring immediate attention.

What You Can Do:

Hang up immediately if you receive a call from this number. Reputable tech companies never call customers unsolicited. If you’re unsure about the legitimacy of a tech support call, contact the company directly using the official customer service number listed on their website.

6. 01615316278: Car Insurance Scams in Manchester

The number 01615316278 is another scam number targeting individuals with fake car insurance offers. Callers often claim to have an offer for cheaper car insurance, only to use high-pressure sales tactics or steal personal information for fraudulent purposes.

What You Can Do:

Be cautious when receiving unsolicited insurance calls, especially if they pressure you to act quickly. Check with your current insurer to ensure any offers are legitimate.

7. 01234237085: Unsolicited Energy Provider Offers in Peterborough

This number, 01234237085, has been flagged for unsolicited calls related to energy provider offers. Many people report receiving calls from this number claiming that their energy provider has changed or that they need to confirm billing details.

What You Can Do:

Do not provide any information over the phone. Contact your energy provider directly using the phone number on your latest bill. Energy companies will not ask for sensitive information over the phone unsolicited.

8. 03332421450: Charity Scam Calls

The number 03332421450 is often associated with fraudulent charity donation scams. Callers may claim to represent a charity and pressure individuals into donating money or providing personal details for “tax purposes.”

What You Can Do:

Before making any donation, research the charity thoroughly. Reputable charities will not pressure you into donating over the phone. Always donate through official channels, such as the charity’s website.

9. 01615316131: Loan Services with High-Pressure Tactics

This Manchester-based number, 01615316131, is used for scams related to loan services, often using high-pressure tactics to convince individuals to apply for loans or credit lines. These scams may require an upfront fee or could lead to personal data theft.

What You Can Do:

Avoid providing any personal information to unsolicited callers. If the offer seems too good to be true, it probably is. Check the legitimacy of the offer by contacting the lender directly or using online resources to verify its authenticity.

10. 01214243333: Fake Government Survey Scams in Birmingham

01214243333 is associated with fraudulent government survey scams. These scammers often claim that you have been selected to participate in an official survey, asking for your personal details in return for a supposed prize.

What You Can Do:

If the call seems suspicious, hang up and do not provide any personal information. Genuine government surveys will never ask for sensitive data over the phone. You can report the number to the ICO if you feel the call was a scam.

How to Protect Yourself from Spam Calls

Spam calls can be incredibly intrusive and frustrating. Here are some practical steps you can take to protect yourself:

1. Use Call Blocking Apps

Apps like TrueCaller, Hiya, and Call Blocker help identify spam callers and block them automatically.

2. Register with the Telephone Preference Service (TPS)

The TPS is a free service that helps reduce unsolicited marketing calls. Registering with TPS allows you to block cold calls from UK-based marketers.

3. Don’t Engage with Unknown Callers

If you receive a call from an unknown number, let it go to voicemail. Legitimate callers will leave a message. Avoid responding to text messages or automated calls from unfamiliar numbers.

4. Report Suspicious Numbers

If you receive a spam call, report the number to services like WhoCalledMe, Ofcom, or the ICO. Reporting helps build a database that prevents further nuisance calls.

5. Check Your Phone Settings

Many smartphones have built-in features to block spam calls. Make sure these are enabled, or install a dedicated spam-blocking app for added protection.

Conclusion

Spam and scam calls remain a persistent problem for phone users in the UK, and staying vigilant is essential to avoid falling victim to these fraudulent schemes. Recognizing suspicious phone numbers, like the ones listed above, is the first step in protecting yourself from these unwanted calls. By utilizing call-blocking tools, reporting suspicious activity, and being cautious with personal information, you can significantly reduce your exposure to phone-based scams.

Stay aware, and remember that your personal and financial information is precious—don’t let spam calls put it at risk.

FAQs

1. What should I do if I get a spam call?

If you receive a spam call, hang up immediately and report the number to services like TrueCaller or WhoCalledMe. Avoid sharing any personal information.

2. How can I block spam calls on my phone?

You can block numbers directly through your phone’s settings or install a third-party call-blocking app such as TrueCaller or Hiya.

3. Is it safe to call back unknown numbers?

It is not safe to call back unknown numbers, especially if they leave a vague or generic voicemail. These numbers may be part of a scam to charge you for the call.

4. Can I stop all telemarketing calls?

You can reduce telemarketing calls by registering with the Telephone Preference Service (TPS). This service helps block unsolicited marketing calls.

5. What are the consequences of engaging with a spam call?

Engaging with a spam call can lead to financial loss, identity theft, or your phone number being added to more spam databases. Always exercise caution.