In today’s digital age, spam phone calls have become a significant issue for many mobile users across the globe, and the UK is no exception. From fraudulent schemes to unsolicited marketing calls, the number of spam calls continues to rise. With the constant increase in reported spam phone numbers, it’s crucial for UK residents to be aware of which numbers are causing the most trouble.
In 2025, the UK is seeing a surge in reports related to scam and spam phone numbers, affecting both landline and mobile phone users. These calls often come from a variety of sources, including automated robocalls, telemarketers, scammers pretending to be from official institutions, and more. This article will explore some of the top reported spam phone numbers in the UK for 2025, focusing on the nature of these calls, who might be behind them, and what actions you can take if you receive a call from one of these numbers.
Below is a detailed overview of the numbers frequently flagged as spam, including what we know about each number and the nature of the calls they make.
Table: Top Reported Spam Phone Numbers in the UK (2025)
Phone Number | Reported Scam Type | Frequency of Reports | Caller ID / Source | Caller Behavior |
03301240997 | Automated Scam Calls | Very High | Unknown/Robocall | Frequently offers fake loans or financial schemes. |
07714135818 | Tax Scam/IRS Impersonation | High | Potentially Scammer | Claims to be from HMRC, threatening legal action. |
01225234277 | PPI Claim/Compensation Calls | Medium | Telemarketing | Offers compensation for past PPI (Payment Protection Insurance). |
01704610003 | Personal Loan Offers | Medium | Unsolicited Loan Provider | Claims to offer quick personal loans. |
01615202425 | Energy Switching Offers | Medium | Energy Provider Scam | Offers to switch energy suppliers, often misleading. |
07537149396 | Fake Government Grant | Medium | Scammer/Phishing | Promises fake government grants or tax rebates. |
02038083197 | Bank Fraud & Identity Theft | Very High | Fraudulent Bank/Phishing | Pretends to be from a bank, asking for personal info. |
03316307362 | Health Insurance/Medical Claims | High | Health Insurance Scams | Claims to offer health insurance or medical claims. |
01438989236 | Debt Collection Scams | Low | Fake Debt Collectors | Claims that you owe money and threatens legal action. |
07520615457 | Telemarketing/Social Services | High | Marketing/Survey | Calls with offers for surveys or social service benefits. |
03301240997 – Automated Scam Calls

Nature of the Call:
This number is frequently flagged for making robocalls offering fake financial products. The most common scam involves promises of loans or other financial services that seem too good to be true. These types of calls often target vulnerable individuals who may be looking for quick financial assistance, offering them loans with terms that are either impossible to meet or are not genuine.
Caller Behavior:
The caller is usually automated, meaning there’s no human to talk to initially. A pre-recorded message plays, asking the person to press a number for more information. If the call is answered by a live operator, they often try to rush the caller into making decisions, creating a sense of urgency.
Why It’s Spam:
Calls from this number are not only unsolicited but also involve misleading financial offers. If a person falls for the scam, they may end up giving personal details or, in some cases, paying money upfront with no real loan ever being provided.
07714135818 – Tax Scam/IRS Impersonation

Nature of the Call:
This number is used by scammers who impersonate officials from the HM Revenue and Customs (HMRC) department. The calls typically claim that there is an outstanding tax balance that needs to be paid immediately to avoid severe consequences, such as arrest or legal action.
Caller Behavior:
The scammers often use high-pressure tactics, threatening legal action or even arrest if the victim does not pay immediately. They may ask for payment via non-traditional methods such as gift cards or wire transfers.
Why It’s Spam:
HMRC does not operate in this manner. The real HMRC will not ask for payment over the phone or demand immediate payment via unusual methods. It is a classic case of phishing, where scammers try to obtain money or personal information.
01225234277 – PPI Claim/Compensation Calls
Check Recent Spamming Numbers:
: : 01245904122: :
: : 02080589360: : 01182286719
Nature of the Call:
PPI (Payment Protection Insurance) claims were a major issue in the UK, and several companies continue to target individuals with offers of compensation, even years after the PPI deadline has passed.
Caller Behavior:
These calls often claim that the recipient is entitled to compensation for PPI payments made on loans or credit cards. While PPI claims were legitimate for a time, many of these calls come from fraudulent or unlicensed companies who may either charge upfront fees or provide little to no service.
Why It’s Spam:
The Compensation Recovery Unit (or equivalent bodies) handle PPI claims, not third-party unsolicited callers. Furthermore, these companies may charge high fees for services that the consumer can do themselves for free.
01704610003 – Personal Loan Offers
Nature of the Call:
This number is used for unsolicited calls offering personal loans. The scammers may promise quick approval, with very little background information needed to secure a loan.
Caller Behavior:
The offer may sound appealing, especially to those in need of fast money, but there are usually strings attached, such as high-interest rates or personal details being compromised. Sometimes, the loan offer is entirely fictional, and no funds are ever delivered.
Why It’s Spam:
Legitimate financial institutions would not contact individuals out of the blue with unsolicited loan offers. Furthermore, these callers often ask for banking details or payments upfront, which is a clear red flag.
01615202425 – Energy Switching Offers
Nature of the Call:
This number is used by companies claiming to offer deals on energy switching, promising lower rates and better service.
Caller Behavior:
The caller might say they can help switch the user’s energy supplier for a cheaper deal. However, many of these calls turn out to be misleading or a way to obtain personal information that can later be used for fraud.
Why It’s Spam:
While switching energy suppliers can sometimes lead to savings, unsolicited calls about energy deals should be treated with caution. If a deal seems too good to be true, it often is.
07537149396 – Fake Government Grant Offers
Nature of the Call:
This number often calls claiming that the recipient is eligible for a government grant. The scam may come with the promise of free money for various purposes, from home repairs to business funding.
Caller Behavior:
The scammers often make it sound very official, using language that makes it seem like the recipient is entitled to financial support. In some cases, they may ask for personal information or payment for “processing fees.”
Why It’s Spam:
The UK government does not make unsolicited calls offering grants to random individuals. This type of scam is a form of financial fraud, where personal details or money are extracted under false pretenses.
02038083197 – Bank Fraud & Identity Theft
Nature of the Call:
This number is often used in bank fraud and identity theft scams. Scammers impersonate bank employees, claiming that there are security issues with the person’s account and asking for sensitive information.
Caller Behavior:
The scammer will typically ask the victim to verify account details, such as PINs or passwords, under the pretense of securing their account. These calls can often sound very convincing.
Why It’s Spam:
Legitimate banks never ask for sensitive information via phone calls. If a call seems suspicious, it is best to hang up and contact the bank directly using an official number.
03316307362 – Health Insurance/Medical Claims
Nature of the Call:
This number is reported frequently for making unsolicited health insurance or medical claim offers. The calls often promise coverage that sounds too good to be true, sometimes targeting older adults or those with existing health issues.
Caller Behavior:
The caller will often push for quick decisions or ask for personal details under the guise of offering benefits or discounts on medical insurance or treatments.
Why It’s Spam:
Most legitimate insurance companies will not cold-call individuals to offer new coverage. The scam is designed to extract personal information or to sell unnecessary and overpriced plans.
01438989236 – Debt Collection Scams
Nature of the Call:
Debt collection scams can be particularly alarming. The caller claims that the person owes money to a company, and failure to pay immediately will result in serious consequences.
Caller Behavior:
The scammer might threaten legal action or debt recovery, using intimidating language to force the victim into paying money quickly.
Why It’s Spam:
If you genuinely owe money, the collection process will be handled through official channels, not by phone calls that involve threats. Genuine debt collectors also provide written confirmation.
07520615457 – Telemarketing/Social Services
Nature of the Call:
This number is commonly used for telemarketing scams, often offering fake social services or surveys.
Caller Behavior:
The scam typically involves offering social services benefits, such as discounts or eligibility for assistance. The caller may ask for personal details or may attempt to sell something unrelated to the original offer.
Why It’s Spam:
Calls that promise benefits or assistance without prior engagement are typically fraudulent, particularly when they ask for personal information.
Conclusion
The rise of spam phone numbers in the UK is a serious concern, with scammers constantly finding new ways to trick individuals into sharing personal information or making payments. Recognizing these numbers and the patterns they follow is essential in protecting yourself from fraud.
If you receive a call from one of these numbers, it is always safest to hang up and block the number immediately. If the call was particularly suspicious, you should report it to relevant authorities like Action Fraud or the Information Commissioner’s Office (ICO) in the UK.
In summary, vigilance and awareness are key to staying protected against these types of scams. Always be cautious about sharing personal information, and remember: If an offer sounds too good to be true, it probably is.