UK cold calling
Power dialers in the UK: costs, rules, and calling British numbers without per-seat pricing
Last updated August 13, 2026
Short answer
UK teams can run a browser power dialer on their own Twilio account today: UK outbound calls cost roughly £0.01–0.02/minute at wholesale and UK numbers about £1/month (approximate — Twilio publishes current rates). DialSheet's software is free up to 500 leads and $29/month (≈£23) per 3-seat pack on Pro — never per-user, which is exactly where UK per-seat tools like Aircall, RingCentral, and CircleLoop get expensive at ~£25–50/user/month. The rules are manageable: screen against TPS/CTPS, and use single-line power dialling — which puts a human on every connected call — to stay clear of Ofcom's silent- and abandoned-call concerns by design.
A note before the rules section: this page describes UK calling regulations at a high level for orientation. It is informational, not legal advice, and rules change. Check the current ICO guidance on direct marketing and PECR, and Ofcom's current policy on persistent misuse, before running campaigns — and talk to a solicitor if your sector has specific restrictions.
The UK rules, in plain English
US-centric dialer content talks about the TCPA and state DNC lists. None of that applies in the UK — the framework here is PECR (the Privacy and Electronic Communications Regulations), UK GDPR, and Ofcom's rules on how dialling equipment may be used. Four things matter for a B2B calling team:
Screen against TPS and CTPS before you dial
The Telephone Preference Service covers individuals — including sole traders and some partnerships — and the Corporate TPS covers registered companies. Making unsolicited marketing calls to numbers on either register breaches PECR unless the subscriber has said they do not object, and the ICO enforces it with fines. Screening both registers before every campaign, and re-screening lists older than about 28 days, is standard practice. Keep your own suppression list on top: anyone who says "take me off your list" stays off permanently.
Avoid silent and abandoned calls — Ofcom’s persistent-misuse rules
Ofcom’s policy on persistent misuse targets the harms of aggressive automated dialling: silent calls (the dialler connects, no agent is there) and abandoned calls (the dialler hangs up on a person it over-dialled for). Predictive diallers create these by design when they call more numbers than there are free agents. A single-line power dialer sidesteps the entire problem — one number at a time, a human on every connected call, no abandonment rate to manage. That is a structural reason, not just a cost one, for small UK teams to prefer power dialling.
Have a lawful basis — UK GDPR and PECR for B2B calls
Live B2B cold calls do not require prior consent the way automated marketing messages do. Most UK teams rely on legitimate interest under UK GDPR: the call is relevant to the recipient’s business role, you have screened against TPS/CTPS, you identify yourself and your company, and you honour opt-outs immediately. Document the reasoning, keep records of screening and opt-outs, and note that some sectors — pensions and claims management among them — face much stricter rules on unsolicited calls.
Handle call recording properly
Recording calls for training or quality purposes is common in the UK but carries notification and data-protection considerations — recipients should generally be told calls may be recorded, recordings are personal data under UK GDPR, and retention should have a defined purpose and limit. If you use AI transcription and scoring on recordings, the same rules apply to the transcripts.
Again: high-level summary, not legal advice — verify against current ICO and Ofcom guidance. DialSheet ships a built-in do-not-call suppression list so opt-outs are enforced automatically at dial time; the mechanics are the same ones covered in our DNC compliance guide.
Why power dialling fits the UK rules better than predictive
The distinction is worth being precise about, because "auto dialer" covers two very different machines. A predictive dialler calls more numbers than there are free agents and connects whoever answers to whoever is available — over-dial and you get silent and abandoned calls, which is precisely what Ofcom's persistent-misuse policy exists to police. A single-line power dialer calls one number at a time with a rep already on the line. Every answered call gets a human instantly. There is no abandonment rate, no answer-machine-detection delay, and no compliance calculation to run — the failure mode Ofcom cares about is structurally impossible.
For a 2–10 person UK team the throughput trade-off barely exists: a power dialer clears 60–100 dials per rep per hour on typical B2B connect rates, and every conversation starts clean instead of with the half-second "hello? hello?" delay that gets predictive calls hung up on.
What UK calling actually costs
Approximate 2026 figures. Twilio rates are wholesale and published on their price list — landline and mobile termination differ, so treat the ranges as ballpark and confirm current rates. Per-seat tool prices are approximate list ranges; vendors change pricing often.
| Line item | Approximate cost (2026) | Worth knowing |
|---|---|---|
| DialSheet software | Free (≤500 leads); Pro $29/mo ≈ £23 per 3-seat pack | Never per-user — one pack covers 3 seats; unlimited leads on Pro |
| UK outbound calls (your Twilio) | ~£0.01–0.02/min | Approximate wholesale; landline vs mobile differ — Twilio publishes current rates |
| UK numbers (your Twilio) | ~£1/mo per number | 01/02 geographic and 03 national numbers; exact rates on Twilio’s price list |
| Aircall | ~£25–40+/user/mo | Per-seat; power dialer gated above the entry tier; seat minimums |
| RingCentral | ~£20–40+/user/mo | Per-seat UCaaS; outbound dialler features sit in higher tiers or add-ons |
| CircleLoop | ~£5–15+/user/mo | Per-seat UK VoIP; a phone system first — power-dialling workflow is limited |
| Typical UK sales dialers | ~£25–50/user/mo | Approximate 2026 range across per-seat tools; minutes often metered on top |
The arithmetic for a 6-rep UK team: two DialSheet packs (~£30/month) plus six numbers (~£6) plus heavy Twilio usage lands well under £100/month — against £150–300/month of per-seat licences before a minute is dialled. Full plan details on the pricing page.
The practical bits: UK numbers, caller ID, and dialling abroad
Buying UK numbers on Twilio
Twilio sells UK geographic numbers with real 01/02 area codes — a Manchester 0161, a London 020, a Birmingham 0121 — plus 03 national numbers that read as UK-wide without looking premium-rate, and UK mobile numbers. Geographic numbers run about £1/month. Some UK number types require address or identity documentation under local telecom rules, which Twilio collects through its regulatory bundle process — a one-time setup step per account.
Local caller ID lifts answer rates
A prospect in Leeds is measurably more likely to answer an 0113 number than an unfamiliar London or non-geographic one. Because BYOC numbers cost about £1/month, holding a small pool of local numbers per target region is cheap. When a number's answer rate declines — heavy outbound use eventually gets numbers flagged by carrier reputation systems — rotate a fresh one in and rest the old one. Our number warm-up guide covers the cadence.
Dialling internationally, both directions
BYOC means you pay each destination country's wholesale rate from the same account. A UK team calling a US list pays Twilio's US termination rate (around $0.014/min) and can buy US numbers for local caller ID; a US team calling UK lists does the mirror image. There is no "international add-on" tier — the per-country rates are simply Twilio's published price list, and one DialSheet workspace can hold numbers from multiple countries.
What this looks like in practice
A concrete shape we see often: a UK accountancy firm brings on five new-starter reps to book discovery calls with local businesses. Teams like this run each rep on their own geographic number (five numbers, about £5/month), import their prospect list from a CSV after TPS/CTPS screening, and put the call script on screen next to the lead card so new starters never freeze mid-call. Every call is transcribed, and AI script-compliance scoring shows the manager which reps are hitting the talk track and which need coaching — training feedback arrives the same afternoon instead of at the end-of-month call review. Software cost for the whole team: two $29 packs, about £45/month. The walkthroughs in tutorials cover the setup end to end.
A UK power dialer without the per-seat bill
DialSheet is a browser power dialer with a built-in CRM — free up to 500 leads for one person, then $29/month (≈£23) per 3-seat pack on Pro, never per-user. Parallel dialling, CSV import, pipeline and tasks, AI transcription with script-compliance coaching, and a built-in DNC suppression list. Calls run on your own Twilio at UK wholesale rates, so there's no telephony markup anywhere in the bill.
Common questions
Is cold calling legal in the UK?
Yes, live B2B cold calling is legal in the UK when done properly. The key requirements at a high level: screen your list against the TPS (for individuals and sole traders) and the CTPS (for companies) before dialling, do not call anyone who has previously told you not to, present a valid caller ID, and be able to point to a lawful basis — typically legitimate interest under UK GDPR for relevant B2B outreach. Some sectors have stricter rules (for example, unsolicited calls about pensions and claims management are heavily restricted). This is a high-level summary, not legal advice — check current ICO and Ofcom guidance for your situation.
Do I need to screen against TPS for business numbers?
Effectively yes. The Corporate TPS (CTPS) covers companies that have registered, and the standard TPS covers individuals — which includes sole traders and some partnerships, who are common in B2B lists. Calling a TPS or CTPS-registered number with unsolicited marketing is a breach of PECR unless the subscriber has told you they do not object, and the ICO can fine for it. Screening both registers before a campaign is the standard practice; keep your own do-not-call suppression list on top. Check current ICO guidance for the details.
Can I use a power dialer under Ofcom rules?
Yes. Ofcom’s persistent-misuse policy targets the harms of aggressive automated dialling — silent calls and abandoned calls, which happen when a predictive dialler connects a person before an agent is free. A single-line power dialer avoids that failure mode by design: it dials one number at a time and a human is on the line for every call that connects, so there is no abandoned-call rate to manage. That is a large part of why small UK teams choose power dialling over predictive dialling. As always, check Ofcom’s current statement of policy on persistent misuse.
What does a UK phone number cost?
Roughly £1 per month per number at wholesale on Twilio — local 01/02 geographic numbers and 03 national numbers are all in that ballpark, with exact rates on Twilio’s published price list. Outbound calls to UK landlines and mobiles cost roughly £0.01–0.02 per minute wholesale. Compare that with per-seat dialer subscriptions at £25–50 per user per month, where numbers and minutes are marked up inside the seat fee.
Can UK teams use Twilio for cold calling?
Yes. Twilio sells UK numbers (01/02 geographic, 03 national, and mobile) and terminates calls to UK landlines and mobiles at published wholesale rates. Some UK number types require address or identity documentation under local rules, which Twilio collects through its regulatory compliance process. A BYOC dialer like DialSheet connects to your own Twilio account, so a UK team pays Twilio’s wholesale rates directly — around £0.01–0.02/minute — with no markup, and owns its numbers outright.
How much does a power dialer cost in the UK?
Typical UK per-seat tools — Aircall, RingCentral, CircleLoop and similar — run roughly £25–50 per user per month at 2026 list prices, often with the dialer feature gated in a higher tier and minutes metered on top. The BYOC alternative: DialSheet is free up to 500 leads and $29/month (about £23) per 3-seat pack on Pro — never per-user — with calls billed by your own Twilio account at wholesale. A 6-person UK team is about £30/month of software instead of £150–300.