Top Reported Spam Phone Numbers in the UK (2025)

Unwanted calls, nuisance texts, and spam voicemails are a growing problem across the UK. In 2025, mobile and landline users continue to report high volumes of spam and scam phone calls. These intrusions not only cause irritation but can sometimes lead to fraud, identity theft, or financial loss. Below, we identify some of the top reported spam numbers in the UK this year, based on public complaint records and telecommunications data.

What Is a Spam Call?

Spam calls refer to unsolicited calls made with the intent to advertise, scam, or defraud recipients. They range from harmless but annoying telemarketing to malicious scams targeting vulnerable people. The rise in sophisticated spoofing techniques has made it increasingly difficult to determine which calls are legitimate.

How We Compiled This List

This list includes phone numbers that have been frequently reported by users across the UK for suspicious, fraudulent, or otherwise unwanted behavior. These reports are gathered from various consumer watchdogs, online complaint forums, and telecom service providers.

Table: Top Reported Spam Numbers in the UK (2025)

Phone Number	Type of Scam Reported	Common Behavior	Risk Level
0141 248 8234	Investment Scam	Claims of financial opportunities	High
0208 056 1256	HMRC/Tax Scam	Threats of legal action	High
0330 341 3407	Bank Impersonation	Claims to be from a major bank	Critical
01782 401192	Energy Provider Scam	Offers fake energy deals	Medium
01204 565837	Automated Insurance Call	Robo-calls about accident claims	High
07418 368807	Phishing Text/Call	Tries to steal bank info	Critical
0121 285 3695	Fake Tech Support	Claims of computer viruses	High
01746 554966	Survey/Prize Scam	Promises free rewards	Medium
0331 630 2079	Broadband Scam	Pretends to be from your ISP	High
0161 884 3145	Debt Collection Fraud	False debts or overdue bills	High

Detailed Reports by Number

 0141 248 8234 — Glasgow Area

This number has been heavily associated with fake investment opportunities, typically involving cryptocurrency or “guaranteed” returns in foreign markets.

Common Tactics:

• Cold calling individuals claiming to be from legitimate-sounding financial institutions
  
• Offering once-in-a-lifetime investment opportunities
  
• Pressuring users to make quick financial decisions
  

Many victims reported receiving follow-up calls from different numbers once they engaged. Experts believe this is part of a larger phishing network.

Advice: Never disclose banking information or transfer funds without verifying the company through official financial regulatory bodies like the FCA.

0208 056 1256 — London Area

This number impersonates the HM Revenue and Customs (HMRC) and threatens victims with legal consequences if they don’t immediately settle “unpaid taxes.”

Common Tactics:

• Robotic voice claiming tax evasion charges
  
• Threats of arrest unless a fine is paid via bank transfer or gift cards
  
• Pressure to act without verification
  

Risk Level: High, especially for vulnerable populations like the elderly. HMRC never contacts individuals this way.

Check Recent Spamming Numbers:

1544329845: : 1614640730: : 1208530299: : 1772342898: : 2031376317

0330 341 3407 — UK-wide Number

This is one of the most dangerous numbers in circulation in 2025. It’s commonly associated with bank impersonation scams. Callers pretend to represent trusted institutions like Lloyds, Barclays, or HSBC.

Red Flags:

• Requests to move money to a “safe account”
  
• Urgent warnings about suspicious activity on your account
  
• Attempts to gather personal security information
  

Advice: Always hang up and call your bank using the number on the back of your card or via their official website.

01782 401192 — Stoke-on-Trent Area

Often linked to bogus energy deals, this number claims to represent energy suppliers with limited-time offers.

Typical Claims:

• Lower energy bills through exclusive plans
  
• Immediate sign-up required for discounts
  
• Requesting personal identification to process “deals”
  

Some people have reported being switched to unknown providers without consent, a practice known as slamming.

01204 565837 — Bolton Area

This is a robocall number often connected to insurance scams.

How it works:

• Plays a recorded message about a recent car accident
  
• Asks to “press 1” to speak to a representative
  
• Uses fear or confusion to gather data
  

Important Tip: Do not engage or press any numbers during these calls.

07418 368807 — Mobile Number

Mobile numbers like this one are harder to trace and are often used for smishing (SMS phishing) and vishing (voice phishing).

Typical Behavior:

• Texts claiming parcel delivery issues
  
• Links that lead to fake Royal Mail or courier sites
  
• Phone calls requesting bank verification
  

Many users were tricked into installing malware or giving up banking credentials.

0121 285 3695 — Birmingham Area

This number is notorious for posing as tech support agents.

How They Trick You:

• Claiming viruses have been detected on your PC
  
• Urging immediate remote access to fix issues
  
• Asking for payment via card or cryptocurrency
  

Once remote access is granted, scammers often install ransomware or steal sensitive information.

01746 554966 — Bridgnorth Area

Often used for survey scams or fake prize giveaways.

Claims Made:

• You’ve won a free prize draw or vacation
  
• You must answer a few “quick survey questions”
  
• A small fee is required to “claim your prize”
  

This tactic is commonly used to harvest data for resale or to trap victims into paying hidden fees.

0331 630 2079 — UK-wide Number

A newer number on the scam radar, reported for pretending to be from broadband providers like BT, Sky, or Virgin Media.

Warning Signs:

• Alleged problems with your internet connection
  
• Offers to fix “connectivity issues” remotely
  
• Attempts to collect billing info
  

They may use technical jargon to confuse less tech-savvy users, urging them to install remote desktop tools.

0161 884 3145 — Manchester Area

This number is linked to debt collection fraud, where callers insist that the victim owes money and must pay immediately.

What Happens:

• You receive a call claiming you owe money to a creditor
  
• They provide vague but intimidating details
  
• You’re asked for immediate payment, often via wire transfer
  

If you don’t recognize the debt or the agency, do not pay. Legitimate collectors must provide written proof and allow you to dispute the debt.

How to Protect Yourself from Spam Calls

With spam and scam calls on the rise, it’s important to stay vigilant. Here are some quick tips:

1. Never share personal info over the phone.
   
2. Register with the TPS (Telephone Preference Service).
   
3. Use your phone’s call-blocking features or a dedicated spam-blocking app.
   
4. Don’t trust caller ID alone—numbers can be spoofed.
   
5. Report spam numbers to Ofcom or Action Fraud.
   

What To Do If You’ve Been Scammed

If you believe you’ve fallen victim to a scam call:

• Contact your bank immediately and freeze any accounts that may be compromised.
  
• Report it to Action Fraud via their website or by calling 0300 123 2040.
  
• Keep a record of the call including the number, time, and what was said.
  

Final Thoughts

The above numbers represent just a small fraction of the spam and scam phone activity reported in 2025. As technology evolves, so do the tactics used by fraudsters. Staying informed and cautious is the best defense. If you receive a call from any of the numbers listed above—or similar numbers—do not engage, hang up immediately, and report it.