Outbound sales agencies in London are all genuine specialists, which makes this the strongest single-city field in the series. Every name here runs cold outreach as its actual trade.
The differences sit in the delivery model rather than the service list. Onshore SDR teams, BPO call centres, digital-first pods and SDR-as-a-service all appear at very different prices.
I judged them on which model they run, who does the calling, and how honestly they report. One is a certified Forge Expert and takes the top slot.
For the wider picture, I also have breakdowns of agencies in the United Kingdom and outbound sales agencies in Manchester.
SalesCaptain is an outbound marketing and go-to-market agency built specifically for B2B companies that want to reach buyers at the right moment. Their innovation lies in using data to trigger outreach when real buyer signals appear, not from static lists.
Their system runs three simultaneous layers: AI-insight campaigns that target accounts not yet problem or solution aware; intent-signal campaigns that engage prospects already showing demand signals like hiring activity or funding rounds; and inbound reactivation campaigns that convert accounts already familiar with your brand but not yet sold.
What separates SalesCaptain from other outbound sales agencies is how they align messaging, timing, and offer to where each prospect sits in their buying journey. They also build market-specific offers that differentiate you from competitors, then run outbound like performance marketing: test fast, scale what works, cut what doesn't.
The result is consistent pipeline generation regardless of TAM size or market saturation. SalesCaptain performs best in environments where innovation matters, which is why B2B SaaS companies are typically the strongest fit.
Bill Stathopoulos runs the team from London and they send roughly 1.2 million emails a month, with Clutch ranking them the number one B2B outbound and GTM agency. Their targeting leans on B2B intent data rather than static lists.
B2B Boosted is a London outbound and lead generation agency serving B2B tech and professional services. The dual focus is stated rather than implied.
Dedicated SDR and appointment-setting teams act as an extension of your own function. Hands-on outreach rather than an automated system is the model. People do the work rather than a platform.
LinkedIn campaigns and tailored messaging combine with CRM integration and performance reporting. Shortening sales cycles is the stated aim. Reporting sits on top of the CRM rather than beside it.
Their focus covers UK and EMEA-focused sellers rather than London alone. Professional services is an unusual specialism worth noting. Professional services buy very differently from software.
Before committing to a dedicated team, weigh the AI SDR vs SDR economics. Rented reps ramp faster and cost considerably more. The gap narrows once your sequences are built.
Punch! is a full-funnel B2B growth and outbound agency headquartered in London. Full-funnel means they stay involved past the meeting.
SDR teams run ABM-style outreach across phone, email, LinkedIn and targeted gifts. Physical gifting inside an outbound programme is genuinely rare. Gifting cuts through when an inbox will not.
Strategy consulting sits alongside SDR execution rather than being sold separately. Outbound metrics are tracked tightly throughout. Strategy and delivery from one team avoids the usual blame gap.
Mid-market and enterprise clients are the stated target. Shortening enterprise sales cycles is where the full-funnel framing earns its fee. Enterprise cycles reward patience over activity.
For the software side of account-based work, see my roundup of ABM tools and what each one handles. Software maps the committee but will not do the research.
Pearl Lemon Leads is a London lead generation agency specialising in outbound B2B campaigns. The London base is their own headquarters.
LinkedIn outreach, cold calling and appointment setting make up the delivery. Cold outreach is the whole business rather than one service line. Focus of that kind usually shows in execution quality.
What separates them is talking about cost per acquisition rather than lead counts. That is a commercial metric instead of an activity one. Cost per acquisition is what a finance director asks about.
Multiple published case studies focus on measurable pipeline outcomes. Sales cycle length is treated as something they can influence. Published case studies invite exactly that scrutiny.
Optimising cost per meeting means avoiding the common cold outreach mistakes that inflate spend without moving pipeline. Efficiency is the metric they compete on.
Outbound Solutions is a Shoreditch appointment-setting and telemarketing agency running phone-led campaigns. There is no marketing layer wrapped around the offer.
Dedicated teams handle outbound prospecting, telemarketing and sales process support. Reaching decision makers by phone is the core method. Dedicated means assigned rather than shared.
Cold calling plus disciplined follow-up is the whole approach. Companies preferring phone-forward outreach get a specialist rather than a generalist. Specialists learn your objections faster.
The Shoreditch base puts them among London's tech and startup cluster. That proximity shapes who they are used to calling. Startup buyers respond differently from corporates.
For London decision makers the cold email vs cold call balance depends heavily on seniority and deal size. Senior UK buyers still answer a well-briefed call.
RSVP is a London call centre and BPO operating from a Canary Wharf headquarters. The financial district address suits their client base.
Outbound telemarketing, lead generation and appointment setting all run from trained agent teams. Phone-centric activity is the whole offer. Agent training is where BPOs either invest or do not.
Follow-ups feed your pipeline with prospects rather than raw contact lists. Transparent communication and metrics are what they emphasise. Metrics being transparent is easier to promise than to deliver.
This is capacity rather than strategy, which is worth understanding before you enquire. BPO scale suits sustained volume rather than experiments. Ask what a minimum viable programme looks like.
If pipeline quality is the real concern, read my AI SDR vs agency comparison before buying call capacity. Volume and quality price very differently.
The Point Company is a London outsourced SDR agency that builds digital SDR teams for B2B tech and SaaS. Digital SDR is their own term and worth understanding.
Account-based outbound prospecting produces the qualified meetings. Tailored outbound strategies rather than one playbook is the framing. Account-based work needs that flexibility.
Sales development operations get treated as a discipline in their own right. Sales development operations is genuinely a discipline. Predictable pipeline growth is the promised outcome.
The digital SDR framing means email and LinkedIn lead over the phone. That suits SaaS buyers who screen calls but read messages. Software buyers screen unknown numbers by default.
Settle the outbound sales strategy before they start. Tailored programmes need a clear target to tailor toward. Vague ICPs waste the tailoring entirely.
Curral is a London outsourced SDR agency deploying onshore and onsite sales development teams. Onsite means physically with your team.
Onshore is the differentiator and they lead with it. Plenty of competitors quietly deliver from lower-cost regions instead. Asking the question directly saves a surprise later.
Outbound sales development, lead generation and sales outsourcing help companies expand across the UK and EMEA. ABM and targeted contact lists are in scope. EMEA expansion is the stated use case.
Performance-driven is how they describe the teams, with handover built into the process. Onsite deployment is unusual and worth asking about. Onsite delivery changes how quickly reps learn your product.
Onshore delivery costs more per seat. Compare it against the AI SDR vs SDR alternative before committing. Onshore is a premium worth paying only for some products.
Callpalooza is a London sales outsourcing and lead generation agency focused on booking demos. Demos rather than meetings is a sharper deliverable.
Personalised outreach sequences are the stated method rather than volume templates. Cold calling, email and LinkedIn all feature. Personalisation is claimed as the method rather than a bonus.
Data-driven targeting sits underneath the sequences. Improving lead quality and meeting booking rates is how they frame success. Booking rate is a more honest metric than volume.
The name suggests phone-first but the offer is genuinely multichannel. Ask which channel carries most of the results on your account. The answer tells you where their real strength sits.
My roundup of multichannel outreach tools covers running the same mix with your own team. Owning the sequences keeps the learning in-house.
Konsyg runs UK, EU and global outbound SDR programmes with London-facing operations. Global reach rather than London roots is the shape here.
SDR-as-a-service means they recruit, onboard and run the teams for you. That is closer to outsourced hiring than campaign delivery. You are buying a hiring function rather than a campaign.
Cold email, cold calling, LinkedIn outreach and appointment setting all sit in scope. Accelerating the sales cycle is the stated goal. All four channels sit under one manager.
Global coverage suits companies selling across time zones rather than London alone. On-demand scaling avoids a hiring cycle. Scaling down is equally straightforward, which matters.
If you would rather own the function, my guide to B2B lead generation maps out the build. Owning the function costs less across two years.
London rates are the highest in the UK and onshore delivery costs more again. The sequences underneath are the same either way.
The Forge stack covers the same ground these agencies cover, for a fraction of one monthly retainer.
Building intent-based lead lists before running outbound sequences with Salesforge.
All the agencies on this list can run effective outbound sales on your behalf. But if your goal is to own the process, control the data, and scale without growing headcount, Salesforge gives you the infrastructure to do it. Try the 14-day free trial - no credit card required.
Onshore rates, or your own stack. Your call.
Try Salesforge free →14-day trial. No credit card, no commitment.
Or if you're still weighing agencies, browse the certified Forge experts for vetted partners.
| Agency | Location | Best For | Key Focus |
|---|---|---|---|
| SalesCaptain ✓ Forge Certified | London, UK | Intent-Triggered B2B Outbound | Intent Signals, GTM Strategy |
| B2B Boosted | London, UK | SDR Extension Teams | Dedicated SDRs, LinkedIn |
| Punch! | London, UK | Full-Funnel Enterprise Outbound | ABM, SDR Teams |
| Pearl Lemon Leads | London, UK | Cost Per Acquisition | Cold Calling, LinkedIn |
| Outbound Solutions Limited | Shoreditch, London | Phone-Forward Campaigns | Telemarketing, Appointment Setting |
| RSVP | Canary Wharf, London | Outsourced Call Capacity | Call Centre, BPO |
| The Point Company | London, UK | Digital SDR Teams | Outsourced SDRs, ABM |
| Curral | London, UK | Onshore SDR Teams | Onshore SDRs, ABM |
| Callpalooza | London, UK | Personalised Sequences | Cold Calling, Email Outreach |
| Konsyg | London & global | SDR-As-A-Service | SDR-As-A-Service, On-Demand |
Rather put an AI SDR on the team?
Hire Agent Frank →He prospects, writes and books meetings around the clock.
London gives you real depth and no easy shortcuts on price. Choose on delivery model rather than on the service list.
SalesCaptain is the strongest signal-led pick and the only certified Forge Expert here. For enterprise ABM go to Punch!, for onshore teams Curral, and for call volume RSVP.
If London retainer maths does not work, run outbound yourself. Two weeks of warmup and a fortnight of sending tells you most of what you need.
Fourteen days, and you will know.
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