Best Outbound Prospecting Agencies in UK [2026]

The UK B2B market is competitive, sophisticated, and crowded. For companies looking to scale, finding an outbound agency that doesn't just "spray and pray" is critical. You need a partner who understands the nuances of the British market, leverages the modern tech stack (Clay, AI), and most importantly knows how to craft a message that actually resonates.

To help you navigate this landscape, we conducted deep-dive interviews with the leading outbound agencies in the UK. We asked the hard questions about pricing, strategy, and results so you don't have to.

Here are the best outbound prospecting agencies in the UK.

1. Spring Drive — The "Resonance Strategy" Agency

👤 Founder: Mohan Muthoo —

🎯 Mini Pitch

While many agencies are racing to automate everything, Spring Drive takes a contrarian approach. Their motto? "Clay is an executor, it's not a thinker."

They argue that even the best data fails if the message doesn't land. Their goal is to build a sustainable pipeline by combining elite technical execution (Mohan was the 4th official UK Clay expert) with deep psychological messaging strategies.

✨ Team Focus

Tech-enabled, Strategy-led.

They don't just build lists; they utilize proprietary frameworks like "Balance Theory" and "Pop Theory."

Mohan’s philosophy is simple: Trigger data is finite (like finding someone hungry standing outside a restaurant). Spring Drive focuses on positioning your offer so effectively (offering "the best steak in the world") that prospects are interested even without a specific hiring trigger.

💼 Pricing

Spring Drive works with "value-conscious" clients, not "budget-conscious" ones.

• Pilot Phase: A 4-month intensive partnership costing between $10k – $15k (one-off fee).
• Retainer: Successful pilots convert to a monthly retainer starting at ~$5k/month.

🧠 Why choose Spring Drive?

• Resonance over Automation: They don't just fill "Clay tables"; they build messaging strategies designed to unlock a larger TAM than competitors who rely solely on limited intent signals.
• Proprietary Frameworks: They ensure your social proof is competitively relevant, not just present.
• Sustainable Pipeline: Their approach is built to solve the "feast or famine" cycle, ensuring consistent meetings month after month rather than lucky spikes.

🛠 Tool stack

• Data & Tech: Clay (Official Experts), Custom waterfalls.
• Copywriting: Claude (for human-like personalization).
• Outreach: Cold Email (15k+ volume/month) & LinkedIn (Multi-account automation).
• Strategy: "Pop Theory" & "Balance Theory" frameworks.

🏢 Is it a fit for you?

• ✅ Best for: B2B SaaS, AI Tech, and Service companies (11–200 employees) targeting Europe & North America.
• 🏆 Dream customer: A Series A/B funded startup (Y-Combinator / Graycroft backed) that has exhausted "easy" lead sources and needs a sophisticated engine.
• Client cases: Blinkist (Scaled to 30-40 meetings/month), Cargo (50 qualified meetings in 5 months).

📌 Opinion

Pick Spring Drive if you are tired of generic "spray and pray." If you want technical mastery (Clay) guided by high-level psychological strategy—and you’re ready to invest in a partner, not just a vendor—this is the choice.

2. TNX — The End-to-End Tech Outbound Partner

👤 Founder: Mihnea Antoce —

🎯 Mini Pitch

TNX (formerly Technexa) doesn't just do lead gen; they build the entire End-to-End Outbound System for tech companies.

From deep-dive onboarding (2 weeks) to Go-To-Market strategy, list building, and execution, they handle the full cycle. Their uniqueness lies in their rigorous process and exclusive data partnerships.

✨ Team Focus

The "Full-Stack" Orchestrators.

They see themselves as an extension of your team. Their process is heavy on the front end: a 2-week deep dive to understand your product before a single message is sent. They are "tech-heavy" on verification but human-heavy on strategy, utilizing phone channels alongside digital outreach.

💼 Pricing

• Onboarding Fee: €1,000 one-off fee for the strategy & setup phase.
• Monthly Retainer: €3,000 – €4,000 / month depending on the Total Addressable Market (TAM) and scope.
• Contract: Minimum 3-month Proof of Concept (POC), rolling into a 6-month extension.

🧠 Why choose TNX?

• End-to-End Ownership: They handle everything: strategy, tech setup, list building, and execution. You don't need to piece together different tools or freelancers.
• Exclusive Data Access: As a vetted Lusha Partner (after a 6-month KYC process), they have premium access to European mobile data that other agencies often struggle to get.
• Multi-Channel Precision: They focus on LinkedIn + Cold Calling + ABM, avoiding the "spam folder" trap of email-only agencies.

🛠 Tool stack

• Data & Enrichment: Sales Navigator, Clay (Refining), Lusha (Primary Enrichment), Apollo (Secondary).
• Outreach: LinkedIn Automation, Cold Calling.
• Inbound: Chili Piper partners.

🏢 Is it a fit for you?

• ✅ Best for: B2B SaaS / Tech companies, Fintech, and Financial Services looking to target Europe/UK.
• 🏆 Dream customer: A tech company that needs a complete outbound arm, not just a list of leads.
• Client Focus: ~65% UK market, with a strong footprint in the rest of Europe.

📌 Opinion

Pick TNX if you want a partner who takes full ownership of the process. If you are in SaaS or Fintech and want a "done-for-you" system that includes heavy phone & LinkedIn lifting, this is your team.

3. Platinum — The "Warm Outbound" & Content Flywheel

👤 Founder: Sönke Venjacob —

🎯 Mini Pitch

Platinum isn't just an outbound agency; they describe themselves as a "No-Bound" agency. They combine cold outreach with content creation to create a "Content Flywheel."

By running LinkedIn content alongside outbound campaigns, they turn cold prospects into warm ones before a single email lands.

✨ Team Focus

The Flywheel Architects.

Sönke comes from a deep software sales background (SDR to AE), while Tom (Head of Ops) builds advanced technical infrastructure. They bridge the gap between "Branding Agencies" (who do content but no sales) and "Lead Gen Agencies" (who do sales but no content). They don't work in data silos—they map the entire market first.

💼 Pricing

They offer flat-fee pricing with no hidden tool costs.

• Content Only: $3,200/month (20 posts/month, graphics, strategy).
• Outbound Only: $4,500/month (15-20k emails, 5k verified leads, 4-5 campaigns).
• Hybrid: Clients can combine both to create the "Warm Outbound" effect.

🧠 Why choose Platinum?

• The "Warm Outbound" Effect: They don't just cold email; they warm up the market with consistent LinkedIn content first. When the email lands, the prospect already knows the face.
• Mass Market Research: For early-stage startups, they use outbound as a rapid feedback loop to validate product-market fit before scaling.
• Advanced Tech Ops: They build "Master TAM Maps" in Clay—pulling data from Apollo, Sales Nav, Google Maps, and Company House—to create a single, de-duplicated source of truth.

🛠 Tool stack

• Data Infrastructure: Clay (Master Templates), Discolight (Ocean.io alternative), Prospio/Boomerang (Scraping).
• Enrichment: Apollo, Sales Navigator, Claygent (AI Web Scraping).
• Outreach: Smartlead/Instantly (Email) + HeyReach (LinkedIn Automation).

🏢 Is it a fit for you?

• ✅ Best for: SaaS Startups & Scale-ups (10-50 employees) and Tech-leaning Agencies.
• 🏆 Dream customer: A founder who understands that "content + sales" works better than sales alone.
• Approach: Pre-Seed = Market Research; Scale-up (>€1M ARR) = ROI and Net New Revenue.

📌 Opinion

Pick Platinum if you believe in the power of Personal Branding + Sales. If you want to be visible on the feed and in the inbox simultaneously, Sönke and his team are the perfect hybrid partner.

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Here are 3 additional UK agencies that fit the high-standard, tech-forward profile you are looking for. I have drafted them using the exact same structure (H2/H3) and "insider" tone.

4. Dial'd In — The "De-Risked" Outbound Operators

👤 Founders: Alex Field & Matthew Sanderson —

🎯 Mini Pitch

Dial'd In positions itself as the agency that "de-risks" outbound. They don't just throw junior SDRs at a list; they start with a "Founder-Executed Pilot." Before they let a rep touch the phone, the founders themselves (Alex & Matthew) run the campaign to prove the messaging and strategy works. Once the "blueprint" is built, only then do they scale it with their team.

✨ Team Focus

Tech-Heavy, Phone-First. While many agencies hide behind email, Dial'd In is unapologetically phone-first. They boast a tech stack worth over £20k and use a waterfall of 20+ mobile data providers to ensure they actually reach prospects. They are anti-script ("we work from wireframes") and focus on high-quality conversations rather than robotic pitching.

💼 Pricing

• Model: "Pilot First" approach to de-risk the investment.
• Cost: Custom, but typically targets the £2k–£5k range depending on intensity. They are transparent about not being a fit for companies with <£5k ACV (Average Contract Value) because the math won't work.

🧠 Why choose Dial'd In?

• Founder-Led Pilot: Most agencies hand you to a junior account manager on Day 1. Dial'd In founders make the first calls to crack the code themselves.
• Data Obsession: They don't just use Apollo; they use a custom waterfall of 20+ data providers to find mobile numbers that other agencies miss.
• Anti-Script: They believe scripts kill conversion. They train reps on "wireframes" and commercial acumen, leading to more natural, peer-to-peer conversations.

🛠 Tool stack

• Data: Custom Waterfall (20+ providers including Lusha, Cognism, Kaspr).
• Outreach: Parallel Dialers (Orum/Nooks style tech for efficiency).
• Strategy: "Wireframe" methodology for cold calling.

🏢 Is it a fit for you?

• ✅ Best for: Companies selling to SMB or Mid-Market where phone outreach is still king.
• 🏆 Dream customer: A founder who wants to scale cold calling but is afraid of burning their brand with bad SDRs.
• Metric: They aim for a 30% Dial-to-Connect rate (industry average is <5%).

📌 Opinion

Pick Dial'd In if you believe the phone is the best channel but are terrified of outsourcing it. They are the "Special Forces" of cold calling rather than a factory.

5. Flowd — The Data-Driven Scientists

👤 Founder: Mitchell Clayton —

🎯 Mini Pitch

Flowd treats outbound like a science experiment. They are less about "art" and more about data, deliverability, and A/B testing. They position themselves as an extension of your sales team that focuses purely on "Sales-Ready" meetings. They don't just hand over a list of leads; they hand over booked meetings on your calendar.

✨ Team Focus

The Deliverability Architects. They focus intensely on the technical side of email—ensuring high inbox placement and using rigorous testing to find the exact message that converts. They claim to have generated over £41M+ in attributed revenue for their clients.

💼 Pricing

• Model: Performance-focused retainers.
• Cost: Projects typically start in the £3,500 – £5,000 per month bracket.
• Structure: Week 1 is purely "Discovery," Weeks 2-4 are "Strategy," and Week 5 is "Go Live." They don't rush the setup.

🧠 Why choose Flowd?

• Scientific Rigor: They don't guess. They run continuous split tests on subject lines, copy, and sending times to optimize results week-over-week.
• Inbox Defense: They are obsessed with keeping your domain safe and out of spam folders, which is the #1 silent killer of outbound campaigns.
• Proprietary Data: They utilize a massive internal database of 500M+ contacts to supplement standard tools.

🛠 Tool stack

• Data: Proprietary Database (500M+ contacts) + standard enrichment.
• Outreach: Multi-channel sequencing (Email + LinkedIn).
• Deliverability: Enterprise-grade warm-up and spam monitoring.

🏢 Is it a fit for you?

• ✅ Best for: B2B Service Providers & Tech looking for high-volume, scientifically tested email outreach.
• 🏆 Dream customer: A marketing agency or SaaS firm that needs a consistent flow of leads but hates the technical headache of deliverability.
• Results: £41M+ Revenue generated; 31,000+ meetings booked.

📌 Opinion

Pick Flowd if you want a "set it and forget it" engine that is technically sound. If you are worried about spam filters and technical setup, these guys are the safe, scientific bet.

6. Punch! — The Account-Based Marketing (ABM) Agency

👤 Founder: James Snider —

🎯 Mini Pitch

If your Total Addressable Market (TAM) is small but high-value, you don't need volume—you need Punch!. They specialize in ABM (Account-Based Marketing). Instead of emailing 10,000 people, they might target just 50 key accounts, but they hit them with a "surround sound" strategy: direct mail, hyper-personalized content, LinkedIn, and phone.

✨ Team Focus

Creative Strategists. They bridge the gap between "Marketing" (Creative/Brand) and "Sales" (Outbound). They are famous for creative door-openers—like sending a prospect a personalized video on an iPad in the mail or a custom gift—to break into the C-Suite of large enterprises.

💼 Pricing

• Model: Project-based or High-Tier Retainer.
• Cost: Expect £5k - £10k+ per month. This is not cheap lead gen; this is enterprise account penetration.
• Why: The cost covers creative assets, direct mail logistics, and deep research.

🧠 Why choose Punch?

• "Surround Sound" Approach: They don't just email. They orchestrate campaigns that reach stakeholders via email, phone, social, and even physical mail.
• Enterprise Focus: Designed for complex sales cycles where there are 5-10 stakeholders involved in the deal (e.g., selling to a bank or a government entity).
• Creative Disruption: They use pattern interrupts (creative direct mail) to get attention where digital channels fail.

🛠 Tool stack

• Strategy: ABM (Account-Based Marketing).
• Channels: Direct Mail (Physical), LinkedIn, Phone, Email, Paid Ads (Air Cover).
• Tech: Intent data platforms (Bombora/6sense style logic) to time outreach.

🏢 Is it a fit for you?

• ✅ Best for: Enterprise B2B & High-Ticket SaaS (Deal sizes £50k+).
• 🏆 Dream customer: A company selling complex solutions to the Fortune 500 who has "burned through" their addressable market with cheap emails.
• Case Study: Unlocked £30M+ in pipeline for Ephesus Sports Lighting by breaking through long sales cycles.

📌 Opinion

Pick Punch! if you are hunting "Whales." If your deal size is small, they are too expensive. But if one client is worth £100k+ to you, their "Surround Sound" strategy is the only way to break in.

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7. Air Marketing — The Outsourced Sales Department

👤 Founder: Owen Richards —

🎯 Mini Pitch

Air Marketing isn't just a lead gen agency; they are an Outsourced Sales Development partner. While other agencies focus on "booking meetings" using automation, Air Marketing focuses on human conversations. They build dedicated SDR teams that act as your internal sales force—making calls, handling objections, and managing the pipeline—without the headache of hiring and training them yourself.

✨ Team Focus

The "Human-First" Sales Floor. Founder Owen Richards is a veteran of the sales floor, and the agency reflects that culture. They don't hide behind email sequences; they are phone-heavy. They recruit, train, and manage professional SDRs who sit in their Exeter HQ but speak on your behalf. They pride themselves on "commercial acumen"—meaning their reps can actually hold a conversation, not just read a script.

💼 Pricing

• Model: FTE (Full-Time Equivalent) or Shared Resource Retainer.
• Cost: Expect £4k – £8k+ per month depending on whether you want a shared SDR or a dedicated full-time resource.
• Why: You are effectively hiring a trained staff member + management layer + tech stack, which is still cheaper than hiring internally in London.

🧠 Why choose Air Marketing?

• Phone Power: In a world of digital noise, they pick up the phone. If your TAM is hard to reach via email, you need voice.
• Scalability: You can ramp up from 1 to 10 SDRs in weeks without recruiting.
• Transparency: They give you full access to call recordings and data. You can listen to how they represent your brand.

🛠 Tool stack

• Channels: Cold Calling (Primary), Email, LinkedIn.
• Tech: Enterprise-grade dialers, CRM integration (HubSpot/Salesforce), and call intelligence software.

🏢 Is it a fit for you?

• ✅ Best for: Companies who need a Sales Team, not just a "Lead List." Ideal for complex B2B services or high-ticket SaaS where a conversation is required to convert.
• 🏆 Dream customer: A Series B scale-up that needs to launch a UK sales team yesterday but doesn't have the internal bandwidth to recruit.

📌 Opinion

Pick Air Marketing if you want Voice. If you believe that "people buy from people," this is the agency that actually puts people on the phone for you.

8. Sopro — The "Prospecting-as-a-Service" Platform

👤 Founders: Ryan Welmans & Rob Harlow —

🎯 Mini Pitch

Sopro has industrialized outbound prospecting. They position themselves as "Prospecting-as-a-Service" (PaaS). They have built a massive proprietary tech platform that connects to your CRM and runs sophisticated, high-volume email campaigns. They are the "reliable engine" of the UK market—less boutique, more machine.

✨ Team Focus

The Tech-First Engine. They are less of a "consultancy" and more of a platform with service attached. They map your Total Addressable Market (TAM) using 160+ data points and run campaigns at scale. Their unique selling point is their Client Portal, which gives you live, 24/7 visibility into every email sent, opened, and replied to.

💼 Pricing

• Model: Fixed-fee tiered subscription.
• Cost: Transparent pricing starting around £2,000 – £4,000 per month depending on volume (typically 50-100 leads engaged per day).
• Structure: Designed to be predictable. You know exactly what you pay and roughly what volume you get.

🧠 Why choose Sopro?

• Reliability: They have run thousands of campaigns. They have benchmark data for almost every industry, so they know what "good" looks like.
• The Portal: You don't have to chase an account manager for a report. You log in and see your campaign stats in real-time.
• Volume: If you have a large TAM and need to cover ground quickly, their infrastructure is built for speed and volume.

🛠 Tool stack

• Data: Proprietary database & live mapping.
• Tech: The "Sopro Portal" (Campaign management dashboard).
• Channel: Cold Email (Primary) + LinkedIn (Secondary).

🏢 Is it a fit for you?

• ✅ Best for: Established SMEs and Mid-Market companies who want a predictable, scalable lead flow.
• 🏆 Dream customer: A B2B company with a broad target market (e.g., "HR Directors in the UK") who needs a consistent volume of introductions every week.

📌 Opinion

Pick Sopro if you want Process & Stability. They are the "safe pair of hands" in the UK market with a platform that proves exactly what they are doing.

9. Pearl Lemon Leads — The Holistic Growth Hackers

👤 Founder: Deepak Shukla —

🎯 Mini Pitch

Pearl Lemon Leads is the wildcard. Founder Deepak Shukla is a well-known SEO and growth hacker, and his agency reflects that scrappy, multi-channel energy. They don't just do "cold email"; they do "Omnichannel Growth." This includes cold email, LinkedIn, Cold Calling, and even Audio Messages and Video Outreach.

✨ Team Focus

The Creative Hustlers. Deepak’s team is known for trying things that other agencies are too polite to do. They will use WhatsApp, they will use Loom videos, and they will call mobile numbers. They are not corporate; they are entrepreneurial. They focus on "Pattern Interrupts"—doing whatever it takes to get the prospect's attention.

💼 Pricing

• Model: Performance-leaning or Retainer.
• Cost: Highly custom, ranging from £2k for small pilots up to £10k+ for full-stack growth management.
• Flexibility: They are known for being more flexible with terms than the big corporate agencies.

🧠 Why choose Pearl Lemon?

• No "Standard" Campaign: They don't just copy-paste a template. They might suggest a podcast invitation strategy one month and a cold call blitz the next.
• Speed: They move fast. If you need a campaign live in 48 hours, they are the type of team to pull an all-nighter to do it.
• Founder Brand: Deepak practices what he preaches—he is constantly testing new outreach methods on himself and sharing the results.

🛠 Tool stack

• Channels: Everything. Email, LinkedIn, Phone, WhatsApp, Video.
• Tech: Lemlist, Ahrefs (for SEO overlap), Custom scrapers.

🏢 Is it a fit for you?

• ✅ Best for: Startups & Founders who want aggressive growth and don't mind breaking a few rules.
• 🏆 Dream customer: A disruptive startup that wants to make noise and needs an agency that matches their energy.

📌 Opinion

Pick Pearl Lemon if you want Creativity & Hustle. If you are bored of "professional but ineffective" corporate agencies, these guys bring the energy.

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