Spam phone calls have become an increasingly frequent issue for many phone users, often leading to frustration, lost time, and potential risks like scams or fraud. In 2025, these unsolicited calls are still a problem, particularly with the rise of automated robocalls and scams targeting unsuspecting victims. The following article highlights some of the most frequently reported spam phone numbers in the UK in 2025. We’ll explore these numbers in detail, explaining why they’re so notorious and how you can protect yourself from falling victim to scams.
Quick Overview of Spam Calls in the UK
Spam calls, also known as nuisance calls, include a wide range of call types, from telemarketers pushing products and services to criminals trying to scam people out of personal information or money. In the UK, telecom watchdogs and consumer protection agencies, such as the ICO (Information Commissioner’s Office), are actively working to reduce these kinds of calls, but the problem persists.
Some of the most frequent offenders include phone numbers from seemingly legitimate sources, such as banks, government bodies, or utility providers, but often these calls are part of fraudulent schemes. It’s crucial to be aware of the following numbers and take steps to block them if necessary.
Table of Top Reported Spam Numbers in the UK (2025)
| Phone Number | Location | Reason for Spam Reports |
| 01977 788417 | Wakefield | Likely scam, automated calls offering loans or services. |
| 02045792608 | London | Telemarketing calls, high volume of nuisance reports. |
| 02039277564 | London | Scam calls pretending to be HMRC (HM Revenue & Customs). |
| 01865950244 | Oxfordshire | Automated robocalls offering non-existent debt relief services. |
| 08008620271 | National | Frequently reported as a scam number pretending to be a bank. |
| 02039676770 | London | Robocalls pushing fraudulent insurance schemes. |
| 03316303353 | National | Often associated with fraudulent debt collection attempts. |
| 03301244030 | National | Calls from scam call centers claiming to be government agents. |
| 02037589440 | London | Likely scam, often associated with fake lottery wins or prizes. |
| 02070434505 | London | Persistent telemarketing calls related to fake or fraudulent offers. |
Check Recent Spamming Numbers:
01634535585 : : 040855989821 : : 01618200299 : : 07441902976 : : 01162018000
01977 788417: Loan Scam Calls from Wakefield
Background
The number 01977 788417 has been flagged as one of the most notorious in 2025, with users across the UK reporting a high volume of nuisance calls. This number is believed to be associated with loan scams, offering quick, high-interest loans or financial services that turn out to be fraudulent. Scammers use this number to offer deals that seem too good to be true, only to ask for personal details or upfront fees.
What You Should Know
If you receive a call from this number, it’s advisable not to engage. Many users report that these callers may seem overly persistent or try to pressure you into making immediate decisions about loans. If you are in need of a loan, it’s crucial to deal only with recognized, trusted institutions.
Protection Tips
- Avoid giving personal details over the phone to unsolicited callers.
- Verify the legitimacy of any loan offers by researching the lender.
- Block the number immediately if you receive a call from 01977 788417.
02045792608: Persistent Telemarketing Calls
Background
The number 02045792608 has earned a reputation for being linked to persistent telemarketing calls. These calls are typically related to promotional offers, market surveys, or other sales activities. While telemarketing itself is legal, these calls are often seen as intrusive and disruptive, especially when they occur frequently or at inconvenient hours.
What You Should Know
This number is notorious for its high volume of calls, sometimes multiple times a day. Some users have reported that these calls tend to continue even after requests to stop, making it particularly frustrating for those on the receiving end.
Protection Tips
- Register your phone number with the Telephone Preference Service (TPS) to reduce telemarketing calls.
- Block the number if calls persist despite your request to stop.
- Report persistent calls to the Information Commissioner’s Office (ICO).
02039277564: HMRC Scam Calls
Background
A common scam that has circulated for years involves calls from scammers pretending to be representatives of HM Revenue & Customs (HMRC). The number 02039277564 is frequently reported as part of this scam, where callers claim that the recipient owes back taxes or has committed tax fraud. The scammers will then try to pressure the victim into paying through various methods.
What You Should Know
The HMRC will never ask for payment over the phone. If you receive a call from this number, it’s highly likely to be a scam. The scammers may even threaten legal action or arrest if you do not comply, creating a sense of urgency to make a payment immediately.
Protection Tips
- Hang up and call HMRC directly using their official contact number (found on their website).
- Do not provide any personal or payment information over the phone.
- Report the number to HMRC and the ICO if you suspect a scam.
01865950244: Debt Relief Scam Calls
Background
The 01865950244 number is associated with scam calls offering false debt relief or consolidation services. These types of scams have been on the rise in 2025, as fraudulent companies prey on individuals struggling with debt by promising to resolve their financial issues for a fee.
What You Should Know
Debt relief scams often involve high-pressure tactics, promising quick fixes for complex financial problems. Victims are asked to provide sensitive financial details or to pay upfront fees, only to find that no help is offered.
Protection Tips
- Never pay upfront fees for debt relief services.
- Verify the legitimacy of any company offering debt solutions by checking reviews and credentials.
- Report suspicious numbers to the ICO.
08008620271: Fake Bank Scam Calls
Background
Another frequent scam involves fraudsters pretending to be from a bank, using the number 08008620271. The callers may claim to be verifying transactions or addressing security concerns with your account. They might ask you to confirm personal information or provide payment details, which they will then use to steal from you.
What You Should Know
Banks will never ask you for sensitive information over the phone, especially not account details or PIN numbers. If you are uncertain, hang up and call your bank’s official customer service number directly.
Protection Tips
- Do not give out your account details over the phone.
- Verify any concerns by contacting your bank directly using trusted contact information.
- Report the number to your bank and the ICO.
02039676770: Fraudulent Insurance Calls
Background
The 02039676770 number is linked to fraudulent calls promoting fake insurance schemes. These scammers may claim to offer health, car, or life insurance policies at extremely low prices. However, the policies are usually nonexistent or have significant hidden costs.
What You Should Know
While some legitimate companies may call to offer insurance, scammers often pressure you into making quick decisions, citing limited-time offers. These types of calls often result in consumers paying for services that don’t exist.
Protection Tips
- Be cautious of unsolicited insurance offers, especially if they seem too good to be true.
- Ask for written confirmation of the offer and verify the company’s credentials.
- Block the number and report the call to the ICO.
03316303353: Debt Collection Scams
Background
The number 03316303353 is often associated with fraudulent debt collection calls. These scammers claim to be from a debt collection agency and demand immediate payment for supposed outstanding debts. In many cases, these debts are fabricated, and the scammer is simply trying to intimidate victims into making payments.
What You Should Know
Debt collection scams can be very convincing. Scammers may use threats, including legal action or arrest, to pressure you into paying. However, legitimate debt collectors will follow proper legal procedures and won’t demand immediate payment over the phone.
Protection Tips
- Never make a payment over the phone without verifying the debt.
- Request written confirmation and proof of the debt before paying.
- Report any suspicious debt collection calls to the ICO.
03301244030: Fake Government Agent Calls
Background
The 03301244030 number is another common scam, with callers pretending to be government agents. These calls might claim to be from the police or immigration services, threatening you with arrest or other consequences unless you immediately provide payment or personal details.
What You Should Know
No legitimate government agency will ask for personal information or payment over the phone, especially under duress. If you receive a call from this number, it’s almost certainly a scam.
Protection Tips
- Hang up and contact the relevant government agency directly.
- Never provide payment details over the phone to unsolicited callers.
- Report the number to the ICO.
02037589440: Fake Prize or Lottery Scam
Background
The 02037589440 number is often linked to fake lottery or prize scam calls. The scammers will claim that you’ve won a lottery or prize but need to pay taxes or fees to claim your winnings. This is a classic tactic used to steal money from unsuspecting victims.
What You Should Know
If you didn’t enter a lottery or competition, it’s highly likely that the call is a scam. No legitimate prize organization will ask for payment upfront.
Protection Tips
- Ignore calls claiming you’ve won a prize you didn’t enter.
- Do not pay any fees or taxes before receiving your prize.
- Report the number to the ICO and block it.
02070434505: Persistent Telemarketing Calls
Background
The number 02070434505 has been flagged as a persistent telemarketing number. These calls may be part of promotional campaigns, but they can quickly become annoying if you’re repeatedly contacted.
What You Should Know
Telemarketers often call from numbers like this one, trying to sell products or services. While legal, these calls can become a nuisance, especially when they occur too frequently.
Protection Tips
- Register your number with the TPS (Telephone Preference Service) to opt out of marketing calls.
- Block the number if calls become too frequent.
- Report persistent calls to the ICO.
How to Block and Report Spam Calls
Blocking spam phone numbers is one of the most effective ways to avoid further nuisance calls. Most smartphones offer features that allow you to block specific numbers or identify calls as spam. Additionally, reporting suspicious numbers to the ICO can help to protect others from falling victim to these scams.
Final Thoughts
Spam calls can be more than just annoying—they can lead to serious consequences, including financial loss and identity theft. It’s essential to stay vigilant and proactive when dealing with unsolicited calls. If you encounter any of the numbers listed above, make sure to block and report them to the appropriate authorities.
