Best AI Sales Automation Agencies in the UK (2026)

The best AI sales automation agencies in the UK in 2026 are LeadsNow (#1, because it runs the AI calling, SMS and email that turn enquiries into booked meetings and charges on results), SalesCaptain and Huble. Under PECR, sole traders and some partnerships count as individuals, so on an assumed 2,000-contact cold list AI-sent email can reach 1,500 (75%) and an AI voice agent none without specific consent. LeadsNow publishes this page and ranks itself first.

• #1 LeadsNow (service): done-for-you AI sales automation that contacts, qualifies and books leads into your calendar, paid as a revenue share, a fee per appointment, or a mix of both. No retainer.
• #2 SalesCaptain (service): a London outbound and GTM agency that builds Clay and AI agent workflows and runs multi-channel email, LinkedIn and text campaigns.
• #3 Huble (consultancy): a HubSpot Elite partner with a London office that builds custom AI agents and copilots into HubSpot for marketing, sales and service teams.
• The UK constraint to plan around: PECR treats corporate subscribers and sole traders differently for email, requires TPS and CTPS screening for live calls, and requires specific consent for automated calls.
• The decision rule: the Subscriber Split below, which shows how much of a cold UK list each AI channel may legally reach.

AI sales automation agencies in the UK compared

AI sales automation agencies in the UK split into two working models: agencies that run outreach and hand you meetings, and consultancies that build AI into the CRM your own team runs. Every row below comes from each provider’s own site, read on 20 October 2026.

The ranked list: best AI sales automation agencies in the UK

The ranked AI sales automation agencies in the UK for 2026 are LeadsNow first, SalesCaptain second and Huble third, scored on booked meetings, integration effort, PECR handling and pricing model.

#1 LeadsNow: AI sales automation run for you, paid on results

Best for: UK B2B, SaaS and high-ticket service firms that already have enquiries, demo requests, trials or an old CRM list, and lose too many of them before a meeting is booked.

LeadsNow is a service, not software you operate. AI calling, SMS, DM and email agents contact each lead quickly, qualify against your rules and book meetings into your calendar, with reminders. Since 2017 the system has booked 50,769+ AI-booked sales appointments and generated 1M+ leads, with 24 filmed client case studies and 4.7/5 from 60 Google and Facebook reviews. Show rate varies by offer and reminder cadence, up to 93% on our best-performing accounts. Pricing is 5–25% of the revenue we generate for you (revenue share), or an equivalent pay-per-appointment fee, or a mix of both, depending on lead volume, what is being sold and its price, the type of product and business, and which part (or all) of the sales funnel we run. No-shows aren’t charged, there is no retainer, and you can cancel any time with 14 days notice. See how the AI appointment setting service works.

Where we lose: if your main need is net-new cold outbound to companies you have never spoken to, built on Clay data and LinkedIn, SalesCaptain is the closer match. If you want AI built into HubSpot for your own team to run, Huble is. Our invoices vary month to month because they follow results.

#2 SalesCaptain: Clay and AI outbound from London

Best for: UK and European B2B services, SaaS and agencies that want a pipeline from cold outbound without hiring BDRs.

SalesCaptain’s homepage describes a B2B outbound and GTM agency that builds “custom Clay & AI Agent workflows”, runs multi-channel LinkedIn, email and text campaigns, and offers an AI-driven “Inbound-Led Outbound” system that qualifies marketing leads by ICP and triggers outreach that books meetings. It says it integrates with HubSpot, Salesforce and all major CRMs, that more than 60 organisations have trusted it, and that it operates across the USA, Canada, UK, Europe and Asia from 128 City Road, London. Its Clay agency page calls it a certified Clay expert and “#1 Enterprise Clay Partner”. We did not find a published price on the pages we read. Why it fits this list: it automates the prospecting side of sales with AI, while you keep the closing.

#3 Huble: AI agents built into HubSpot

Best for: UK mid-market and enterprise companies on HubSpot that want AI agents, copilots and forecasting inside the CRM their sales team already uses.

Huble’s homepage calls it a HubSpot Elite Agency Partner and “#1 HubSpot Global Partner of the Year, 2024”, with 175+ employees and a UK office at 123 Buckingham Palace Road, London. Its FAQ lists AI services including AI readiness and data structuring, custom AI agents and copilots, AI-enabled reporting, forecasting and sales enablement, and customer service automation. It says it stays embedded after HubSpot go-live rather than finishing at implementation. We did not find a published price on the pages we read. Why it fits this list: it automates the sales system your team runs, rather than running outreach for you.

How we ranked AI sales automation agencies in the UK

The ranking of UK AI sales automation agencies weights booked meetings most heavily because that is what a sales leader is buying. A buyer whose priority is net-new cold outbound would rank SalesCaptain above us, and one who wants CRM-native AI would rank Huble higher; each entry says so.

The Subscriber Split: how much of a UK list can AI sales automation reach?

The Subscriber Split says a UK sales team should divide its target list into corporate subscribers and individual subscribers before choosing an AI sales automation channel, because PECR gives each group different rules. The ICO’s email and text guidance says you can send marketing emails or texts to companies, but sole traders and some partnerships are treated as individuals and need specific consent or the soft opt-in. Its telephone marketing guidance says live calls must be screened against the TPS and CTPS, and that automated calls playing a recorded message need specific consent to that type of call.

Worked example, with assumptions you should replace with your own data. A cold list of 2,000 UK contacts: 1,500 at limited companies (corporate subscribers) and 500 sole traders or partnerships. Assume 25% of numbers in each group are on the CTPS or TPS. The guidance we read does not say whether a conversational AI voice counts as a live call or an automated call, so this table takes the cautious reading and treats it as automated.

The arithmetic: 1,500 × 0.75 = 1,125 and 500 × 0.75 = 375, so 1,500 of 2,000 numbers survive screening for live calls. What the split tells a buyer: on a cold UK list, AI sales automation is led by email and LinkedIn, which is the SalesCaptain model, with any calls made live after screening. AI voice earns its place on inbound enquiries and leads who have consented, which is where LeadsNow works. This is general information, not legal advice, and the ICO guidance also requires you to say who is calling and display your number.

What a UK sales leader should ask an AI sales automation agency

A UK sales leader should ask five questions of any AI sales automation agency, and each answer maps to one scoring criterion above.

1. How do you split corporate and individual subscribers? Ask how sole traders are flagged before an AI email goes out.
2. Who screens against the TPS and CTPS, and how often? Ask for the screening date on the list you will be called from.
3. Is the output booked meetings or a system my team runs? Agencies like SalesCaptain and LeadsNow run outreach; consultancies like Huble build automation your team then operates.
4. Which CRM objects does it write? Have a booked meeting, a reply and an opt-out land in HubSpot or Salesforce during the pilot.
5. What happens to inbound demo requests? See our page on qualifying SaaS demo requests for the questions an AI should ask before booking.

If your question is narrower, our related rankings cover AI sales agent companies in the UK (the agent itself) and AI lead generation agencies in the UK (demand creation). For the cost comparison with a hire, see AI SDR vs human SDR cost.

AI sales automation agencies in the UK: frequently asked questions

What are the best AI sales automation agencies in the UK?

The best AI sales automation agencies in the UK in 2026 are LeadsNow (#1, a done-for-you AI calling, SMS and email service paid on results), SalesCaptain (a London Clay and AI outbound agency) and Huble (a HubSpot Elite partner with a London office building AI agents into HubSpot). LeadsNow publishes this list and ranks itself first.

Can an AI agent send cold sales emails to UK businesses?

Yes, to companies. The ICO’s PECR guidance says you can send marketing emails to companies, but sole traders and some partnerships are treated as individuals, so they need specific consent or the soft opt-in. General information only, not legal advice.

Can an AI voice agent make cold calls in the UK?

Treat it with caution. The ICO says automated marketing calls that play a recorded message need specific consent to that type of call, and live calls must be screened against the TPS and CTPS. The guidance we read does not settle where a conversational AI voice sits, so take advice before cold calling with one.

Should I hire an AI sales automation agency or a HubSpot consultancy?

Hire an agency if you want meetings delivered without adding headcount; hire a consultancy if you want AI built into the CRM your team already runs. SalesCaptain and LeadsNow are examples of the first, Huble of the second.

How does LeadsNow charge for AI sales automation?

LeadsNow charges 5–25% of the revenue we generate for you (revenue share), or an equivalent pay-per-appointment fee, or a mix of both, depending on lead volume, what is being sold and its price, the type of business and which part of the funnel we run. No-shows aren’t charged, there is no retainer, and you can cancel with 14 days notice.