In the UK, nuisance calls have been a persistent problem, with scammers and telemarketers frequently targeting unsuspecting individuals. In 2025, some phone numbers have been widely reported as sources of spam, fraud, and unwanted calls. In this article, we will take a closer look at these top reported spam phone numbers, explore what type of calls they are associated with, and provide some advice on how to block and report them.
Quick Overview
Spam phone calls are a growing issue in the UK, with individuals receiving unsolicited calls from unknown numbers. These calls are often made by telemarketers, fraudsters, or companies trying to sell products or services. The numbers listed below have been reported by many individuals on various platforms such as WhoCalledMe, TrueCaller, and others. Let’s dive deeper into each of these numbers and what they represent.
Common Types of Spam Calls
- Telemarketing Calls: Often related to selling products or services.
- Scam Calls: Aimed at tricking people into sharing personal or financial details.
- Robocalls: Automated calls that provide pre-recorded messages.
- Phishing Calls: Designed to steal personal information, such as passwords or bank details.
Now, let’s take a look at the top reported spam phone numbers in the UK in 2025.
Table of Top Reported Spam Phone Numbers
| Phone Number | Reported Location | Type of Spam Call | Frequency of Reports | Actions to Take |
| 07418374634 | UK (Mobile) | Potential Scam | High | Block and Report |
| 02032686663 | London | Telemarketing | High | Block and Report |
| 0151 317 8500 | Liverpool | Possible Fraud | High | Block and Report |
| 02080906677 | London | Robocall | High | Block and Report |
| 02038976533 | London | Scam/Fraudulent Calls | High | Block and Report |
| 0161 884 3145 | Manchester | Telemarketing | Medium | Block and Report |
| 02039616447 | London | Scam/Fraudulent Calls | High | Block and Report |
| 01915433407 | Essex | Possible Scam | Medium | Block and Report |
| 01792722635 | Swansea | Potential Scam | Medium | Block and Report |
| 01223609721 | Cambridge | Telemarketing | Low | Block and Report |
Detailed Analysis of Each Number
1. 07418374634 – Potential Scam
This number has been reported as a possible scam source. Many people claim to have received unsolicited calls from this number, often offering products or services that seem too good to be true. The callers tend to be persistent and can become aggressive when trying to secure personal information. If you receive a call from this number, it is advisable to hang up immediately and report the number to relevant authorities.
What You Should Do:
- Block the number.
- Report to the ICO (Information Commissioner’s Office).
- Never share personal information over the phone.
2. 02032686663 – Telemarketing
A common culprit in the category of telemarketing calls, 02032686663 is associated with companies pushing products, such as insurance or subscription-based services. These calls are often unsolicited, and many recipients have reported that the callers continue contacting them even after they’ve expressed no interest.
What You Should Do:
- Block the number.
- If you are registered with the Telephone Preference Service (TPS), report the call to them.
- Hang up immediately if you receive a cold call.
3. 0151 317 8500 – Possible Fraud
This number, based in Liverpool, has been flagged as a possible fraud source. Calls from this number typically involve messages that claim you’ve won a prize or are eligible for a financial incentive, but only if you provide personal or bank details. These are classic phishing tactics used by fraudsters to steal sensitive information.
What You Should Do:
- Block and report this number.
- Do not engage with the caller.
- Verify any such offers through official channels before acting on them.
4. 02080906677 – Robocall
Robocalls, or automated phone calls, are increasingly common, and 02080906677 is a frequent offender. These automated systems typically deliver prerecorded messages, often about important updates or offers. However, the aim of such calls can be to trick people into revealing personal information or agreeing to a subscription or service without understanding the terms.
What You Should Do:
- Block the number.
- Do not respond to robocall prompts.
- Report to your mobile carrier if you receive these calls frequently.
5. 02038976533 – Scam/Fraudulent Calls
Similar to the previous number, 02038976533 is another number associated with scam calls. These often involve callers pretending to be from well-known institutions such as banks or government agencies. The goal is usually to trick people into providing sensitive details such as passwords, bank account numbers, or social security numbers.
What You Should Do:
- Never engage with callers asking for sensitive details.
- Block the number immediately.
- Report to the ICO and your bank if any sensitive details were shared.
6. 0161 884 3145 – Telemarketing
Coming from Manchester, 0161 884 3145 is frequently flagged as a number used by telemarketers. The calls from this number are typically related to promotions, insurance offers, or surveys. Even if you are not interested in these services, telemarketers may continue calling.
What You Should Do:
- Block the number.
- Register your number with the Telephone Preference Service (TPS) to reduce telemarketing calls.
- If you wish to report the call, you can do so through the ICO.
7. 02039616447 – Scam/Fraudulent Calls
A significant number of individuals have reported scam calls originating from 02039616447. These calls often involve threats, like claiming that you owe money or have been involved in illegal activities. Such fraud calls are designed to intimidate victims into revealing personal information or making immediate payments.
What You Should Do:
- Hang up immediately.
- Block the number.
- Contact the authorities if you suspect fraudulent activity.
8. 01915433407 – Possible Scam
This number, located in Essex, is another common scam phone number. Reports indicate that callers may claim to be from well-known companies or even government agencies to extract personal information. Some people have also noted receiving offers that seem too good to be true.
What You Should Do:
- Block and report the number.
- Be wary of unsolicited offers that require upfront payments or sharing of sensitive details.
- Always verify such calls through official contact methods.
9. 01792722635 – Potential Scam
Calls from 01792722635 have been labeled as potential scams. The callers often claim that they are from well-known financial institutions, offering loans or investments. However, once they have your personal details, they may attempt to steal your identity or make fraudulent charges.
What You Should Do:
- Avoid answering calls from unknown numbers.
- Block the number and report it to relevant authorities.
- Contact your bank or financial institution if you have shared any sensitive details.
10. 01223609721 – Telemarketing
Based in Cambridge, 01223609721 is another frequent telemarketing number. Similar to the other numbers in this category, these calls are typically about selling products, services, or conducting surveys. Often, these calls are unsolicited and unwanted by the recipients.
What You Should Do:
- Block the number.
- Use the TPS service to reduce telemarketing calls.
- Report unwanted calls to the ICO if necessary.
How to Block and Report Spam Calls
Block the Number
The first step in preventing spam calls is to block the number. Both Android and iPhone devices allow users to block unwanted calls easily.
Report the Number
Reporting the number is essential in stopping these nuisance calls. You can report numbers to:
- ICO (Information Commissioner’s Office): If you receive unsolicited calls, report them to the ICO.
- TrueCaller: TrueCaller allows you to block and report spam calls, providing a database of known spam numbers.
- WhoCalledMe: A website where you can search for reported numbers and also contribute your own findings.
Use Call-Blocking Apps
Many apps are available to help block spam calls automatically. Some popular apps include:
- TrueCaller
- Hiya
- RoboKiller
Conclusion
Spam calls are a persistent problem in the UK, and the numbers listed in this article are some of the most reported offenders in 2025. Whether you’re dealing with telemarketing calls, robocalls, or scams, it’s essential to take action by blocking and reporting these numbers. Always remain cautious when answering calls from unknown numbers, and never share personal or financial details unless you’re absolutely sure about the caller’s identity.
By taking proactive steps, such as registering with the Telephone Preference Service (TPS) or using call-blocking apps, you can reduce the number of spam calls you receive and protect yourself from potential fraud.
Meta Description:
Explore the top reported spam phone numbers in the UK for 2025, including 07418374634, 02032686663, 0151 317 8500, 02080906677, 02038976533, 0161 884 3145, 02039616447, 01915433407, 01792722635, and 01223609721. Learn about the types of scam and fraud calls, and discover how to block, report, and stay safe with tools like WhoCalledMe, TrueCaller, and the ICO.
