If you’ve ever registered with the Telephone Preference Service (TPS), you’ve probably had the same thought a week later:
“Why am I still getting scam calls?”
It’s a fair question. TPS is real, useful, and worth doing. But it was never designed to stop criminals. It’s designed to control legitimate marketing calls.
So let’s separate the myth from the reality, and talk about what actually reduces nuisance and scam calls in the UK.
What the TPS is meant to do (and what it isn’t)
The TPS is the UK’s official “do not call” register for unsolicited sales and marketing calls.
If a company plays by the rules, being on the TPS list tells them:
“Do not cold call this number.”
In other words, TPS is a filter for law-abiding telemarketers.
What TPS is not:
- A scam-blocking service
- A fraud detection system
- A guaranteed “no more nuisance calls” switch
It’s a legal signal, not a technical barrier.
The key difference: telemarketers vs. scammers
Legitimate telemarketers
These are companies that:
- Have a real UK presence
- Don’t want complaints, fines, or regulator attention
- Buy call lists from compliant sources
- Screen numbers against TPS
For them, TPS works. If they’re following the rules, they’ll stop calling.
Illegal scammers
Scammers don’t care about TPS. They often:
- Spoof numbers (so blocking one number doesn’t stop the next one)
- Use overseas call centres
- Rotate through thousands of numbers
- Ignore UK regulations entirely
To a scammer, TPS is just a list they don’t consult.
That’s why you can be registered and still get calls.
Why TPS can feel useless (even when it isn’t)
TPS can still reduce a chunk of nuisance calls, but three common things make it look like it “doesn’t work”:
- Scam calls are the loudest and most frequent
Even if TPS reduces legitimate marketing calls, scammers can still fill your day. - Caller ID can be faked
So the call “looks local” or “looks like a mobile” even when it’s not. - Blocking single numbers is a whack-a-mole game
Traditional call blocking often relies on blocking a number after it annoys you. Scammers simply change number and try again.
This is where people realise they need more than a registry.
What actually stops scammers: layers of protection
If scammers don’t follow the rules, you need protection that doesn’t rely on them behaving.
Here are the most effective layers, in plain English.
1) Automatic blocking using shared intelligence
Instead of waiting for you to block a number, the best protection uses a global blocklist that updates constantly based on real reports.
Phonely’s CallGuard does this by using a block list updated hourly through the Who Called Me website to automatically block known scam and nuisance numbers, stopping many calls before the phone even rings.
2) A deterrent that changes scammer behaviour
One of the simplest psychological tricks is also one of the most effective:
A short message that tells callers the line is protected, recorded, and monitored.
Phonely calls this an anti-fraud introduction. It often makes scammers hang up before they even start their script, while reassuring genuine callers they’ve reached the right person.
3) Real-time alerts (so vulnerable people aren’t handling it alone)
Scam calls work best when someone feels pressured and isolated.
That’s why a “trusted person” layer matters. If a call looks suspicious, a family member can be alerted straight away and help decide what to do. Phonely supports suspicious call alerts to trusted person(s), and they can mark a caller safe or block them permanently.
4) Proof and review (recordings, transcripts, keywords)
Scammers rely on confusion: “Did they really say that?” “Maybe I misunderstood?”
Call recording helps. Transcription and keyword alerts go a step further by flagging risky conversations when certain words are used (like “bank”, “money”, or “prize”).
5) Practical control that fits real life
Things like quiet hours (no late-night disturbances) and offline alerts (so family know if the phone service goes down) reduce stress and improve safety, especially for older relatives living alone.
TPS is still worth doing (but treat it like step one)
If you’re not on the TPS already, register. It’s free, quick, and it does reduce calls from businesses that follow the law.
But don’t stop there.
A good way to think about it:
- TPS helps with compliance (legitimate marketing)
- Call protection helps with criminals (scams and fraud)
Different problem. Different solution.
One more reason this matters now: the UK landline switch-off
The UK’s traditional analogue landline network is being retired, with the PSTN switch-off due by January 2027. After that, home phone services move to digital (VoIP).
That shift is a good opportunity to upgrade protection at the same time, because a digital service can add features that old landlines simply can’t.
The takeaway
TPS does what it’s meant to do: stop compliant telemarketers.
Scammers live outside that system.
If you want real peace and quiet, you need protection that:
- blocks known bad numbers automatically
- deters fraudsters when they call
- alerts a trusted person when something looks off
- gives you evidence and clarity after a call
That’s how you close the gap between “TPS on paper” and “TPS in real life.”