For UK businesses, nuisance calls are more than a distraction—they waste time, reduce productivity, and can even pose security risks. Whether you’re a small shop or a large call centre, constant interruptions from scammers or aggressive sales callers can harm your operations.
The good news? Businesses have practical ways to protect their landlines. This guide explains how nuisance calls target companies, what rules protect you, and how to stop unwanted calls for good.

Why Are Businesses Targeted by Nuisance Calls in the UK?
Nuisance calls to businesses are common because:
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Publicly listed numbers: Many companies publish contact details online, making them easy targets.
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Scam opportunities: Fraudsters impersonate energy suppliers, banks, or HMRC.
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High outbound activity: Sales or customer service lines attract telemarketers in return.
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Data leaks: Breached or sold contact lists circulate among illegitimate call centres.
Ofcom research in 2024 revealed that one in three small businesses receive daily nuisance or scam calls, leading to lost time and increased stress.
Summary: Businesses are targeted because their contact details are public, their numbers are reused in data lists, and scammers view them as profitable opportunities.
What Are the Risks of Ignoring Nuisance Calls?
Beyond the annoyance, nuisance calls can:
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Disrupt operations: Staff spend time answering irrelevant or fake inquiries.
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Expose sensitive data: Fraudsters often pose as “IT support” or “account managers.”
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Damage reputation: Responding to scams can risk customer trust.
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Cause compliance issues: Mishandling data or payments under scam pressure may breach GDPR.
Example: A UK marketing agency reported that a spoofed call claiming to be from its telecom provider led to unauthorised access to its business account—costing over £5,000.
Summary: Ignoring nuisance calls risks financial loss, data breaches, compliance violations, and reputational damage.
What Steps Can UK Businesses Take to Stop Nuisance Calls?
Here are proven methods to safeguard your lines:
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Register with the Corporate TPS (CTPS) – This free service stops legitimate telemarketers from calling your business numbers.
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Use a commercial-grade call blocker – Devices like CPR Call Blocker Protect can handle multiple lines and filter known scam numbers.
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Enable call filtering from your provider – BT, Virgin, and Sky all offer business call protection services.
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Train staff – Teach employees to spot scams (e.g., fake HMRC or supplier calls).
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Report incidents – File complaints with Action Fraud or the Information Commissioner’s Office (ICO).
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Adopt a clear policy – Set procedures for handling unknown callers before sharing details or payments.
Summary: Registering with CTPS, using call blockers, training staff, and reporting scams are the most effective ways to stop nuisance calls in UK businesses.
How Can Technology Help Businesses Stay Protected?
Modern call management systems add layers of defence:
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Interactive Voice Response (IVR): Routes calls to relevant staff, screening out spam.
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Auto-attendants: Force callers to select menu options, deterring robocalls.
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Blacklist databases: Automatically block known nuisance numbers.
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Analytics tools: Identify call trends to refine filtering settings.
Many UK businesses combine these tools with physical call blockers for maximum effect.
Summary: Technologies like IVR, auto-attendants, and blacklist databases help businesses filter, track, and eliminate unwanted calls.

Conclusion
Nuisance calls are a growing challenge for UK businesses, but prevention is entirely possible. Combining CTPS registration, advanced call blockers, staff awareness, and smart telecom technology gives you a strong defence against scams and interruptions.
Explore CPR Call Blocker to protect your loved ones today.
FAQs
Q: Can businesses join the regular TPS?
A: Businesses should register with the Corporate TPS (CTPS) instead.
Q: Are call blockers legal for business lines?
A: Yes, they are fully legal and supported by Ofcom and the ICO.
Q: What if nuisance calls come from overseas?
A: Use devices that block international and withheld numbers.
Q: How can I train staff to handle scam calls?
A: Teach them to verify identities, avoid sharing data, and report suspicious calls internally.
