PECR, TPS and Ofcom rules for AI calls in the UK

In the UK, marketing calls are governed mainly by the Privacy and Electronic Communications Regulations 2003 (PECR) alongside UK GDPR. If you are asking about PECR and AI calls in the UK, the headline is this: an AI agent making marketing calls is generally treated as an automated calling system, which needs the recipient's prior consent, while the TPS and Ofcom's rules on silent and abandoned calls apply to anything you dial.

This is general information, not legal advice. The law has been changing, and guidance from the ICO and Ofcom is updated regularly. Check current rules and get legal advice before you launch.

Who regulates what

Body	Covers	Typical action
ICO	PECR marketing rules, UK GDPR	Fines, enforcement notices
Ofcom	Nuisance calls: silent and abandoned calls, misuse of numbers and caller ID	Fines, directions
TPS and CTPS	Registers of people and companies who do not want marketing calls	Not a regulator, but the register you screen against

The ICO's fining power for PECR breaches has historically been up to £500,000, and recent reforms moved it toward the higher UK GDPR levels. Check the current maximum, but the direction of travel is clear.

The three PECR rules that matter for calling

1. Automated calls need prior consent

PECR's rule on automated calling systems says that you must not use them for direct marketing unless the person has previously given you consent for that. A conversational AI agent places a call without a human talking at the moment of dialling, so we would treat it as falling within this rule rather than relying on a technical argument that it is "live". This is the key difference from a human cold caller.

Consent for this purpose needs to be specific and informed, and it has to be given by a person who understood they would receive automated marketing calls. A pre-ticked box or a vague privacy policy mention does not do the job.

2. TPS and CTPS for live marketing calls

For live marketing calls, you must not ring a number registered with the Telephone Preference Service (individuals) or the Corporate TPS (companies) unless the person has told you they are happy for you to call. If you are using AI in a way that is closer to a live call, say for a hybrid process where a human takes over, TPS screening is still sensible and expected. Treat the registers as a suppression list in either case.

Practical notes:

• Screen against the registers before each campaign, not once. Numbers are added every month.
• Keep the date of the last screening in your records.
• Sole traders and some partnerships are treated as individuals, so the CTPS does not cover them.

3. Identify yourself and present a valid number

You must tell the person who is calling and, if asked, give an address or free phone number where you can be contacted. Calls should present a caller line identity that is valid and can be called back, and number display should not be withheld for marketing calls. Using someone else's number, or a number that cannot receive calls, is a quick way to attract complaints.

Ofcom, silent calls and abandoned calls

Ofcom deals with nuisance calls separately, and the rules were written with predictive dialers in mind, but they apply to anything that dials at speed.

• Silent calls are calls where the person answers and hears nothing. They scare people and are treated as a misuse of the network.
• Abandoned calls are calls that connect to a person but are dropped because no agent is free. Ofcom's guidance has pointed to a ceiling of 3% of live calls abandoned, measured over a 24-hour period, and requires a short recorded message that names the company and gives a number when a call is abandoned.

With AI agents, the risk is different from predictive dialers. An agent can usually pick up every connected call, so abandoned calls are rare. But silent calls can still happen when there is a latency gap, a dropped audio channel or a bad carrier route. Test your numbers and monitor the proportion of very short calls with no transcript, which is often the first sign that something is wrong.

What this means for AI cold calling in the UK

Put plainly: AI cold calling a list of strangers is very hard to do lawfully in the UK for consumers, because the consent standard for automated calls is high. Where AI calling fits more easily:

• Responding to enquiries. Someone fills in a form asking to be called. See speed to lead with AI calling.
• Customer service and booking calls that are not marketing, such as appointment confirmations and reminders, though you still need to respect data protection rules.
• Reactivating customers who have given consent to hear from you. See reactivating old leads with AI calls and check that the original consent still covers it.
• Inbound calls, where the person called you.

If you are in lettings or sales, our guide to AI voice agents for UK estate agents covers portal enquiries, where consent is easier to establish.

UK GDPR sits underneath

Whenever you call, you process personal data: names, numbers, voices and often a recording. You need a lawful basis, a privacy notice that is easy to find, and a clear policy for retention. Recording and transcribing calls is covered in GDPR and call recording. Marketing calls also need an easy way to object, and an objection should be recorded and applied everywhere.

A practical UK checklist

1. Establish prior consent for any automated marketing call and keep the proof.
2. Screen against TPS and CTPS before every campaign, and store the date.
3. Present a valid, returnable caller number.
4. State the business name early in the call, and say it is an AI agent.
5. Set calling hours conservatively. Neither PECR nor Ofcom sets a single statutory window, but guidance and common sense point to normal daytime and early evening hours.
6. Honour objections on the call and add them to a suppression list immediately.
7. Monitor short and silent calls, and investigate any pattern.
8. Review the position with a UK adviser, especially if you call consumers.

Try it

Purple Voice runs campaigns on your own phone numbers with calling hours, retries and a consent confirmation step you control per campaign. It does not screen the TPS for you, so keep that step in your own process. The Free plan, with one agent, one number and 100 contacts, needs no card. Start at voice.purplerocket.co and test with calls to your own phone first. For the wider picture, read is AI cold calling legal.