In the digital age, telemarketing and scam calls have become a pervasive issue, especially with the rise of spam phone numbers targeting vulnerable individuals. In the UK, the fight against such nuisance calls has intensified as these calls become more sophisticated and intrusive. Many individuals report receiving unsolicited calls from numbers they do not recognize, some even attempting to gain personal information or tricking people into paying for fraudulent services. As we progress into 2025, certain numbers have consistently emerged as the most reported spam phone numbers. This article highlights some of the top reported spam phone numbers in the UK and provides insight into why they are flagged as spam and what actions you can take to protect yourself from such calls.
Understanding Spam Phone Numbers
Before we dive into the specific numbers, let’s first understand what qualifies a phone number as “spam.” Spam calls, often made by robots (robocalls), telemarketers, or fraudsters, attempt to mislead or trick individuals. These numbers are commonly used for:
- Phishing Scams: These calls attempt to gather personal information like bank account details, passwords, and credit card numbers.
- Fraudulent Services: Calls that trick individuals into paying for services or products that do not exist.
- Debt Collection: Fraudulent debt collectors targeting unsuspecting victims.
- Robocalls: Automated messages that try to sell products, services, or collect debts.
The impact of these spam numbers can be devastating, leading to financial loss, identity theft, or significant emotional distress. It’s crucial to report such numbers to authorities like the Information Commissioner’s Office (ICO) in the UK to stop the spread of these scams.
Top Reported Spam Phone Numbers in the UK (2025)
Here are some of the top reported spam numbers currently causing trouble in the UK:
| Phone Number | Location | Spam Type | Description |
| 01134800357 | Leeds | Robocall / Phishing | Often calls with recorded messages asking for personal details. |
| 01213927485 | Birmingham | Telemarketing | Frequent calls offering fake services or investments. |
| 01553374998 | Lincolnshire | Fraudulent Services | Claims to offer “limited-time offers” for free trials or prizes. |
| 01615319614 | Manchester | Phishing / Fraud | Tries to gather sensitive information under the guise of a government service. |
| 01617687287 | Greater Manchester | Robocall | Uses automated messages to promote loans or credit services. |
| 01615315801 | Manchester | Debt Collection | Fraudulent debt collectors demanding payment on fake debts. |
| 02039277527 | London | Robocall / Phishing | Claims to be from a trusted institution, asking for bank details. |
| 01482293795 | Hull | Telemarketing | Persistent calls offering fake investment opportunities. |
| 0800 137631 | Toll-Free | Scam / Fraud | Call center claiming to offer prize money or vacation packages. |
| 01902962788 | Wolverhampton | Robocall | Calls that promote fake government programs or financial assistance. |
Detailed Review of Top Reported Spam Phone Numbers
01134800357 – Leeds
This number has been flagged multiple times by UK residents for making robocalls and phishing attempts. The recorded messages usually state that the recipient has won a prize or that their bank account is at risk. These scams are designed to prompt people to press a number to confirm their details. In many cases, fraudsters use this tactic to harvest personal information such as PIN codes, account numbers, and passwords. The number belongs to a Leeds-based call center, which is suspected of using aggressive tactics to extract information from unsuspecting people.
Action Steps: If you receive a call from this number, do not respond to any prompts. Hang up immediately and block the number.
01213927485 – Birmingham
This number is notorious for persistent telemarketing calls, often offering products or services that are too good to be true. The number frequently targets elderly individuals, offering low-cost insurance, health services, or investment opportunities. These types of scams use high-pressure tactics to convince people to make immediate decisions, often exploiting their lack of technical knowledge.
Action Steps: Don’t entertain unsolicited offers. If you’re interested in any services or products, research legitimate providers first. Report the number to the ICO.
01553374998 – Lincolnshire
Calls from this number are usually associated with fraudulent services. The scammers often promise free trials for health products, services, or subscription-based products. However, when people accept the offer, they are charged for goods that never arrive. Scammers use this number to manipulate consumers into providing bank details for the so-called “free trial” or “prize claim.”
Action Steps: Never give out personal details over the phone, especially for unsolicited offers. You can block the number and report it.
01615319614 – Manchester
This Manchester-based number has been reported multiple times for phishing scams. Fraudsters posing as government officials or representatives of trusted organizations often call people to inform them about fictitious tax issues, fines, or refund claims. The callers urge individuals to provide bank details to “resolve” the issue or claim the refund.
Action Steps: Always verify any official communication you receive, especially if it involves financial transactions. Use official channels to contact the organization directly.
01617687287 – Greater Manchester
Another Manchester-based number that frequently sends robocalls promoting loans, credit cards, and financial services. The automated messages often promise low-interest loans or debt consolidation offers, but these offers are too good to be true and lead to financial loss. Some victims report that once they share their information, they are bombarded with further calls and even threatened.
Check Recent Spamming Numbers:
01134800357: :
: : 02870024945: : 02030055852: : 07418368807
Action Steps: Block the number and avoid engaging with any financial offers that you haven’t researched. Consider registering with the Telephone Preference Service (TPS) to reduce unwanted calls.
01615315801 – Manchester
This number is associated with fraudulent debt collection activities. It is part of a broader network of scam operations that target individuals who may have fallen behind on their bills or loans. Scammers using this number may make false claims about owed debt, demanding immediate payment to avoid further action. They typically pressure the victim into making a payment or sharing bank details.
Action Steps: Never provide payment over the phone for unexpected calls about debt. Always verify any debt collection claim with the original lender or agency.
02039277527 – London
This London-based number is often used for robocalls and phishing attempts. The callers impersonate representatives from large banks or government organizations, claiming to need immediate information for account verification or security purposes. The goal is to trick individuals into providing their bank account details, passwords, or even credit card information.
Action Steps: Always contact your bank or service provider through official channels if you receive a suspicious call.
01482293795 – Hull
This number is associated with a persistent scam operation offering fake investment opportunities. The callers attempt to lure people with promises of high returns on investments in stock markets, cryptocurrency, or real estate. The scammer may ask for an upfront fee to process the “investment” and then disappear with the money.
Action Steps: Never invest in opportunities presented over unsolicited calls. Always conduct your own research and seek advice from a licensed financial advisor.
0800 137631 – Toll-Free Number
This toll-free number has been reported for being linked to prize scams. Callers often claim that the recipient has won a major prize or vacation package, but to claim it, the victim must pay a “processing fee” or provide banking information. The scam is designed to extract money from the victim while offering nothing in return.
Action Steps: If the call claims you’ve won something but you don’t remember entering a competition, it’s likely a scam. Do not give any payment or personal details.
01902962788 – Wolverhampton
This number is linked to robocalls that try to promote fake government schemes or financial assistance programs. The automated voice often claims that the recipient is eligible for a large sum of government money, but they must confirm their details. The goal is to extract personal details for fraudulent activities.
Action Steps: Hang up immediately. Government programs never ask for sensitive information over the phone.
Protecting Yourself From Spam Calls
There are several ways you can protect yourself from falling victim to spam phone numbers in the UK:
- Do Not Engage: If you do not recognize the number, do not answer the call. If it’s important, they will leave a voicemail.
- Block the Number: Block any numbers that persist in calling or seem suspicious.
- Report Spam Calls: Report any spam numbers to the Information Commissioner’s Office (ICO) or your mobile network provider.
- Register With TPS: The Telephone Preference Service (TPS) allows you to opt out of unsolicited marketing calls.
- Use Call-Blocking Apps: Many apps can help identify and block spam calls automatically, reducing the chances of you answering one.
- Be Cautious of Requests for Personal Information: Never share personal, financial, or sensitive information over the phone, especially if the request is unexpected.
Conclusion
Spam phone numbers continue to be a significant issue in the UK in 2025, with scammers becoming more creative and persistent in their attempts to exploit vulnerable individuals. Numbers such as 01134800357, 01213927485, and others in the list above are some of the most reported for fraudulent activities, including phishing, robocalls, and fraudulent services. The best course of action is to stay vigilant, block unwanted numbers, and report suspicious activity to relevant authorities to help stop these scams from spreading further.
If you’ve received a call from any of these numbers or have encountered other suspicious numbers, follow the steps outlined above and protect yourself from falling prey to these dangerous scams.
