Spam phone calls continue to be a major nuisance for individuals and businesses alike across the United Kingdom. As scammers become more sophisticated in their tactics, it has become increasingly important for the public to remain vigilant and informed. In 2025, thousands of people across the UK have reported a wide range of suspicious numbers engaging in deceptive, fraudulent, or persistent unsolicited activity.
This article highlights the top reported spam phone numbers in the UK for 2025, based on community reports, telecommunications watchdogs, and online complaint boards. We’ve compiled a detailed table and description of each number, so you can stay protected and help others by spreading awareness.
Why Identifying Spam Numbers Matters
Scam and nuisance calls cost UK consumers millions each year. From fake HMRC threats to phishing for bank details, these calls are not only annoying but potentially devastating. Recognizing and reporting suspicious numbers can reduce the spread of scams and help authorities act faster.
Table: Top Reported Spam Phone Numbers in the UK (2025)
| Phone Number | Type of Spam | Common Tactic | Area Code Location |
| 0161 531 4189 | Investment Scam | Fake crypto investment offers | Manchester |
| 01482 680397 | HMRC Impersonation | Tax evasion threats | Hull |
| 0161 531 9571 | Banking Fraud | Claims to be from your bank | Manchester |
| +44 20 7871 3855 | Tech Support Scam | Claims PC has a virus | London |
| 01204 961931 | Energy Tariff Scam | Fake energy comparison calls | Bolton |
| 01782 580403 | Missed Call Scam | One-ring hang-up to prompt call back | Stoke-on-Trent |
| 0141 310 2032 | Loan Offer Scam | Fake loan approvals | Glasgow |
| 44 800 014 8840 | Compensation Scam | Claims of owed accident compensation | Freephone |
| 020 8058 7072 | Amazon Account Scam | Fake Amazon security alert | London |
| 0121 436 2597 | Broadband Scam | Claims internet will be disconnected | Birmingham |
Detailed Overview of Each Number
1. 0161 531 4189 – Crypto Investment Scam
This Manchester-based number has been widely reported for pushing fake investment opportunities, especially cryptocurrency schemes. Callers claim to represent legitimate firms offering guaranteed high returns. Many victims report being pressured into making immediate deposits.
Warning Signs:
- Offers that sound too good to be true.
- Requests for debit/credit card details or bank info.
- Use of technical jargon to confuse targets.
Advice: Never invest based on unsolicited calls. Verify firms with the FCA (Financial Conduct Authority).
2. 01482 680397 – HMRC Impersonator
Originating from Hull, this number is notorious for posing as HMRC agents. Victims report receiving alarming calls about unpaid taxes, threats of arrest, or legal action unless immediate payments are made via prepaid cards or bank transfers.
Warning Signs:
- Threatening tone or urgency.
- Demands for payment over the phone.
- Requests for personal identifiers like NI numbers.
Advice: HMRC never contacts people this way. Hang up and report to Action Fraud.
3. 0161 531 9571 – Banking Fraud Alert
This Manchester number impersonates well-known UK banks. Victims describe receiving calls stating there’s suspicious activity on their account and being asked to “verify” personal data. In some cases, the fraudster walks the victim through fake secure procedures to gain access to online banking.
Warning Signs:
- Claims your account is compromised.
- Urges you to move funds to a “safe account.”
- Sophisticated use of caller ID spoofing.
Advice: End the call. Call your bank using the number on the back of your card to confirm any activity.
4. +44 20 7871 3855 – Tech Support Scam
This number is part of a tech support scam ring. Callers say they’re from Microsoft or BT and that your computer has been infected with malware. They then direct you to install remote access software like AnyDesk or TeamViewer.
Warning Signs:
- Cold call claiming your computer is hacked.
- Requests to install unfamiliar software.
- High-pressure tactics to act immediately.
Advice: Tech companies never cold-call users. Do not grant remote access under any circumstances.
Check Recent Spamming Numbers:
1782401163: : 3301740216: : 1484599876: : 2030340147: : 1258588702
5. 01204 961931 – Energy Tariff Switch Scam
Bolton-based 01204 961931 is reported for impersonating Ofgem-approved energy switching services. They claim to lower your bills by switching providers, then ask for address and payment details. Some victims found unauthorized switches made on their behalf.
Warning Signs:
- Pushy tactics about switching tariffs.
- Claims to be government-endorsed.
- Asks for bank details “to set up the new account.”
Advice: Use verified price comparison websites and never give out banking details over the phone.
6. 01782 580403 – One-Ring Callback Scam
This Stoke-on-Trent number is part of a “wangiri” (one-ring) scam. It rings once and hangs up. When curious individuals call back, they’re connected to a premium rate line, leading to unexpected charges.
Warning Signs:
- Very short missed calls from unfamiliar numbers.
- High per-minute charges when returning the call.
Advice: Do not return calls from unfamiliar numbers with short missed calls. Block and report instead.
7. 0141 310 2032 – Fake Loan Offer
A Glasgow-based number, 0141 310 2032, is linked to fake loan providers. People are offered instant approval for personal loans, but are then asked to pay an “insurance fee” up front, after which the caller disappears.
Warning Signs:
- Unsolicited loan offers with guaranteed approval.
- Requests for upfront fees before funds are released.
Advice: No genuine UK lender will request payment before disbursing a loan. Check with the FCA register for authenticity.
8. 44 800 014 8840 – Compensation Claim Scam
Though it appears to be a freephone number, 44 800 014 8840 is tied to compensation scams claiming you’re owed money from a past accident or PPI claim. The caller may try to harvest personal and financial details.
Warning Signs:
- Vague references to accidents or claims.
- Asks you to confirm banking information to receive “your money.”
Advice: Don’t confirm or provide any details. Hang up and block the number.
9. 020 8058 7072 – Amazon Account Security Scam
A relatively new London number, 020 8058 7072, is reported for fake Amazon account security alerts. Victims are told their account was compromised, and they must follow steps to prevent it being locked, including giving card or login information.
Warning Signs:
- Call claiming your Amazon account is compromised.
- Requests for login credentials or payment methods.
Advice: Amazon does not call users this way. Use your Amazon account dashboard to verify any alerts.
10. 0121 436 2597 – Broadband Disconnection Threat
From Birmingham, this number pretends to be from BT, Sky, or Virgin, claiming your internet service will be disconnected due to illegal activity or non-payment. Victims are urged to “verify” their account or risk immediate shutdown.
Warning Signs:
- Threat of instant disconnection.
- Callers asking for IP address or account number.
- Request for remote access to your router or device.
Advice: Hang up and call your provider using their official website contact info.
What To Do If You Receive a Spam Call
- Don’t answer unknown numbers – Let them go to voicemail.
- Never share personal information – Especially banking or ID numbers.
- Hang up if it feels suspicious – Trust your instincts.
- Block the number – Use your phone’s built-in blocking feature.
- Report it – Use services like:
- ICO (Information Commissioner’s Office) – for nuisance calls.
- Action Fraud – for scam attempts.
- Ofcom – for reporting telecoms issues.
- ICO (Information Commissioner’s Office) – for nuisance calls.
Stay Informed, Stay Safe
The methods used by scammers evolve quickly. Being informed about the latest tactics and top reported numbers is your first line of defense. Always be cautious, skeptical of unsolicited contact, and verify everything through official channels.
By sharing this information, you help build a safer communication environment for everyone. Stay vigilant – and spread the word.
