Spam and scam calls continue to plague mobile and landline users across the United Kingdom in 2025. Despite stronger regulations and increased public awareness, fraudsters persist with new tactics to trick individuals into giving up personal information, making unnecessary payments, or simply wasting time. This article highlights some of the most reported spam phone numbers in the UK this year, based on public complaints, online spam databases, and user reports.
We break down the top reported spam numbers below with descriptions of the most common scam types associated with each. If you see any of these numbers on your caller ID, it’s safest to avoid answering or block the number altogether.
Top Spam Phone Numbers in the UK (2025) – Overview Table
| Phone Number | Location (Prefix Area) | Common Scam Type | Risk Level |
| 0330 174 9754 | National (Non-geographic) | Energy Provider Scam | High |
| 0118 228 6719 | Reading | Bank & Credit Card Fraud | High |
| 020 3670 1438 | London | HMRC Tax Scam | High |
| 0121 732 9501 | Birmingham | Insurance Compensation Scam | Medium-High |
| 0800 652 0266 | Toll-Free | “Free” Pension Review Offer | High |
| 020 8075 4322 | London | Crypto Investment Scam | Very High |
| 020 4572 2127 | London | Broadband Disconnection Threat | High |
| 01483 974485 | Guildford | Fake Police/Legal Threats | High |
| +44 20 8058 0162 | International Format (London) | Phishing – Amazon/PayPal Spoof | High |
| 07520 619042 | Mobile Number | Fake Delivery Texts & Voicemail Drops | High |
0330 174 9754 – Fake Energy Provider Calls
This number has been frequently associated with energy-switching scams. Callers often pretend to be from a government-backed energy advisory group or well-known energy providers, offering too-good-to-be-true discounts or claiming you’re eligible for an energy rebate.
Tactics:
- Claiming your energy bill is too high and you need to switch providers.
- Asking for personal or banking details to “set up a new account.”
Advice: Never give out financial or personal information unless you initiated the call and verified the company.
0118 228 6719 – Bank Fraud Impersonation
Callers from this number are often impersonating major UK banks, such as Barclays or Lloyds, claiming your account has been compromised.
Reported Behaviours:
- Urging the recipient to transfer money to a “safe account”.
- Requesting two-factor authentication codes or online banking details.
- Pretending to be from fraud prevention units.
Warning: No legitimate bank will ask for your PIN or password over the phone. Hang up and contact your bank using official numbers.
020 3670 1438 – HMRC Scam Calls
This London-based number has been heavily reported for impersonating HMRC (Her Majesty’s Revenue and Customs).
Common Script:
- “You owe unpaid taxes and will be arrested if you don’t pay immediately.”
- Using robotic voice recordings to sound official.
- Asking to pay via gift cards, crypto, or wire transfers.
Note: HMRC will never threaten legal action by phone. Always check via their official website or hotline if you’re in doubt.
0121 732 9501 – Insurance and Accident Claims
A frequent nuisance call number, this one is often linked to fake insurance or accident compensation companies.
Call Features:
- Asking if you’ve been in a recent car accident (regardless of actual history).
- Offering compensation but needing sensitive details first.
Reality Check: These are usually fishing attempts. Hang up, block the number, and report it to the ICO (Information Commissioner’s Office) or TPS (Telephone Preference Service).
0800 652 0266 – “Free” Pension Review Offers
This toll-free number is often used by pension scam artists offering a free review of your retirement plan.
Common Phrases:
- “We can unlock your pension early.”
- “Our experts will triple your returns.”
High-Risk Alert: Pension scams can result in devastating long-term financial losses. Always check if the firm is FCA-registered before even discussing pension details.
020 8075 4322 – Cryptocurrency Investment Scam
This number is one of the most aggressively reported in 2025 due to its link to fraudulent crypto investment schemes.
Scammer Behavior:
- Claiming to be from a “regulated” crypto platform.
- Promising high and guaranteed returns on Bitcoin, Ethereum, etc.
- Following up with relentless calls and pressure to deposit money.
Note: FCA has listed dozens of clone companies that imitate real investment firms. Always verify before investing.
020 4572 2127 – Broadband Disconnection Threat
Many people have been targeted by this number posing as BT, Sky, or Virgin Media support.
Scare Tactics:
- Claiming your internet will be disconnected due to illegal activity.
- Redirecting you to download software or provide router access.
Tech Tip: Real ISPs don’t operate this way. Do not allow remote access or provide account credentials unless you are 100% sure.
01483 974485 – Legal & Police Impersonators
Callers from this Guildford-based number have been pretending to be police officers or legal agents.
Scenarios:
- Claiming you’re under investigation.
- Demanding payment to avoid legal action.
- Threatening court summons or jail time.
Important Reminder: Police or courts never collect fines or fees over the phone. If you’re unsure, hang up and call your local station directly.
+44 20 8058 0162 – Amazon/PayPal Spoof Phishing
Operating from an international format, this number is linked to phishing campaigns involving Amazon, PayPal, and other e-commerce platforms.
Typical Fraud Messages:
- “Suspicious login detected – press 1 to secure your account.”
- “Your account will be locked – verify now.”
These scams use fear and urgency to trick you into providing login credentials. Never follow links or press options on suspicious calls.
07520 619042 – Delivery Scam Texts and Fake Voicemails
This mobile number has been tied to SMS-based fraud:
Tactics:
- Text messages claiming a delivery failed (often impersonating Royal Mail, DPD, or Hermes).
- Links to phishing websites requesting personal or banking details.
- Fake voicemail alerts requiring login credentials.
Advice: Always verify delivery messages through the official tracking portal of the courier service in question.
How to Protect Yourself from Spam Calls in 2025
With the increasing sophistication of scam calls, staying informed is more important than ever. Here are some ways to protect yourself:
Use Call Blocking Tools:
- Enable spam detection via your mobile provider or use apps like Truecaller or Hiya.
- Block and report numbers that harass or try to scam you.
Register with the TPS (Telephone Preference Service):
- It won’t stop scammers, but it does reduce legitimate telemarketing.
Never Share Personal Info:
- Don’t disclose passwords, PINs, or bank info over the phone—even if the call seems genuine.
Hang Up and Verify:
- If a caller claims to be from an institution, hang up and call back using the official number.
Report the Number:
- Use resources like Ofcom, Action Fraud, and WhoCalledMe to log reports and help warn others.
Final Thoughts
Spam and scam calls are a daily nuisance for many UK residents in 2025, but being vigilant and informed can drastically reduce your risk. The numbers listed in this article are just a fraction of the ones in circulation, but they represent some of the most common and dangerous scams reported this year.
Whenever in doubt, don’t engage, don’t panic, and always double-check before taking action. Stay safe, and share this list to help protect your friends and family!
