Spam calls continue to be a major issue for mobile and landline users in the UK. These calls often come from automated systems, telemarketers, or fraudsters looking to deceive people and steal their personal information. With the constant rise of spam calls, it’s more important than ever to stay informed and take measures to protect yourself. In this article, we’ll explore the most frequently reported spam phone numbers in the UK in 2025. We’ve compiled a list of numbers that many have flagged as unwanted or potentially dangerous. Additionally, we will provide guidance on how to report and block these calls.
Quick Overview of Spam Calls in the UK
Spam calls, often referred to as nuisance calls, are a growing problem worldwide, and the UK is no exception. They can range from persistent marketing calls to fraudulent schemes aiming to trick individuals into providing sensitive information such as credit card details, bank account numbers, or social security numbers.
In 2025, mobile phone users in the UK reported more than ever about annoying or suspicious calls. Many of these calls are made by automated robocalls or scammers pretending to be from trusted companies like banks or government bodies. As a result, it’s crucial to stay vigilant and know how to recognize these calls.
Below, we take a closer look at some of the top reported spam phone numbers in the UK.
Top Reported Spam Phone Numbers
| Phone Number | Location | Nature of Call | Frequency of Reports |
| 07418374634 | Mobile (UK) | Potential Scam / Robocall | High |
| 02032686663 | London | Telemarketing / Unwanted Calls | Medium |
| 0151 317 8500 | Liverpool | Financial Services / Scam | High |
| 02080906677 | London | Unwanted Sales / Scam | High |
| 02038976533 | London | Robocall / Fraudulent Activity | High |
| 0161 884 3145 | Manchester | Marketing Calls / Scam | Medium |
| 02039616447 | London | PPI Claiming / Fraud | High |
| 01915433407 | Surrey | Debt Collection / Scam | Medium |
| 01792722635 | Swansea | Robocall / Scam | Low |
| 01223609721 | Cambridge | Unsolicited Sales / Scam | Medium |
07418374634: Mobile (UK) – Robocall/Scam Alert
The phone number 07418374634 has been widely reported by UK mobile users in 2025. Many people have flagged this number as being linked to robocalls and scams. These calls are typically automated, and they often begin with a pre-recorded message.
Common Scam Tactics Used
The message typically claims to be from a well-known company, like a bank or a telecommunications provider, and requests users to press a button or call back. However, doing so could result in unwanted charges or your personal details being compromised.
How to Deal with This Number
- Do not engage with the call: If you answer and hear a pre-recorded message, hang up immediately.
- Block the number: Most smartphones allow you to block numbers directly in your settings.
- Report the call: You can report this number to organizations like Ofcom and ICO.
02032686663: London – Telemarketing and Unwanted Calls
This number, 02032686663, is frequently flagged for telemarketing and unwanted sales calls. It is often associated with businesses that use aggressive marketing tactics to sell products or services.
Common Reasons for Reports
- Robocalls promoting financial products
- Insurance and loan offers
While these calls may not necessarily be scams, they can still be irritating, especially if you receive them frequently.
What You Can Do
- Register with TPS (Telephone Preference Service): This will help reduce marketing calls.
- Mark the number as spam: If you’re using a smartphone, you can mark the number as spam in apps like Truecaller or WhoCalledMe.
- Opt out of marketing: Many companies allow you to opt out of future marketing calls. You can also ask them to remove your number from their list.
0151 317 8500: Liverpool – Financial Services Scam
The phone number 0151 317 8500, which originates from Liverpool, is associated with fraudulent activity related to financial services. Many reports from UK users indicate that this number is used for scam attempts, including fake loans, credit card offers, and debt relief scams.
Scam Alerts
Calls from this number often ask for personal financial details and may even request money upfront for services that do not exist.
Steps to Take
- Avoid giving out personal information: Never share your bank details or social security number over the phone unless you are sure of the legitimacy of the call.
- Check with your bank or financial institution: If the call claims to be from your bank or credit card company, always call them back using the official contact number from their website.
02080906677: London – Unwanted Sales and Fraud
Another frequently reported number is 02080906677, which is often linked to fraudulent sales tactics and scam offers. These calls can be particularly dangerous as they might come from individuals posing as legitimate businesses offering “too good to be true” deals.
Warning Signs
- Unsolicited offers: If you didn’t request the call, be cautious.
- Requests for payment in advance: Scammers often ask for payment upfront for services or products that they never deliver.
What You Can Do
- Hang up immediately: If the call feels suspicious, don’t hesitate to hang up.
- Report the number: You can report it to Ofcom and ICO to help others avoid falling victim to the scam.
02038976533: London – Robocall/Fraudulent Activity
The number 02038976533 is another robocall that has been reported numerous times by UK users. It is associated with fraudulent activities and has raised concerns regarding the privacy of individuals receiving such calls.
Types of Fraud
The fraudsters behind this number are known to promote false claims for PPI (Payment Protection Insurance) or other types of compensation that are not owed.
What You Should Do
- Do not provide any personal details: Never engage in a conversation if you suspect a scam.
- Block the number: Blocking robocall numbers is an effective way to prevent future calls.
0161 884 3145: Manchester – Marketing Calls and Scams
Manchester’s 0161 884 3145 is often reported for marketing calls and scams. While not all calls from this number are fraudulent, many people have expressed frustration with persistent and unwanted sales calls.
What Are They Selling?
This number is frequently tied to financial products, such as insurance policies or credit cards, which may not be relevant to all recipients.
How to Handle It
- Use call-blocking apps: Apps like Truecaller can help identify unwanted calls and block them automatically.
- Opt-out: Request to be removed from the list if you do engage with the caller.
02039616447: London – PPI Claims and Fraud
02039616447 is another number associated with PPI claims, which have been a target for scammers. If you didn’t apply for PPI claims, the call is likely a scam. It could be part of a larger effort to collect personal data or extort money.
Red Flags
- Demanding urgent action: Fraudsters often claim that you need to act immediately to claim compensation.
- Requesting bank details: Legitimate PPI claims companies will never ask for sensitive information via phone.
What You Can Do
- Hang up and report the call to the relevant authorities.
- Do not share any personal details.
01915433407: Surrey – Debt Collection Scam
The number 01915433407 from Surrey is often linked to debt collection scams. Callers pretending to be from a debt recovery service may try to pressure individuals into paying a debt that they do not owe.
Warning Signs
- Threatening language: The callers may threaten legal action or the involvement of bailiffs.
- Unusual payment methods: Scammers often ask for unusual payment methods such as gift cards or money transfers.
How to Protect Yourself
- Don’t pay any money: Always verify any debts through official channels.
- Block the number: If you receive a call from this number, block it immediately.
01792722635: Swansea – Robocall and Scam
The number 01792722635 from Swansea has been flagged for robocalls and other types of scams. This number typically calls unsuspecting individuals with automated messages promoting fake services.
What to Do
- Block the number: Most smartphones allow you to block specific numbers directly.
- Report it: File a complaint with the ICO to prevent future scams.
01223609721: Cambridge – Unsolicited Sales Calls
01223609721 from Cambridge is frequently associated with unsolicited sales calls and scams. People who have received calls from this number report that they are often bombarded with offers for products or services they never requested.
How to Handle It
- Hang up and block the number.
- Use anti-spam apps like Truecaller to prevent future calls.
How to Protect Yourself from Spam Calls
- Block Unknown Numbers: Most smartphones allow you to block numbers directly. Use this feature if you get an unwanted call.
- Register with TPS: The Telephone Preference Service (TPS) helps reduce marketing calls. Signing up can reduce the frequency of unwanted calls.
- Use Call-Blocking Apps: Apps like Truecaller or WhoCalledMe can help identify and block scam numbers.
- Report the Number: If you receive a suspicious call, report it to Ofcom or ICO. Your report helps protect others.
Conclusion: Stay Safe and Informed
Spam calls are a persistent problem in the UK, and staying vigilant is the key to avoiding scams. The numbers listed in this article are among the top reported spam calls in 2025. By recognizing these numbers and taking steps to block or report them, you can better protect yourself and others from falling victim to fraud. Always be cautious when dealing with unsolicited calls, and remember that your personal information is valuable – don’t share it over the phone unless you are absolutely sure the call is legitimate.
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 how to identify scams, block these numbers, and protect yourself from unwanted calls. Stay informed and take action against spam calls.
