Konsyg
Companies looking for end-to-end outbound sales execution
Cold calling, email, LinkedIn
Sales-as-a-Service / outsourced sales
Finding a B2B lead generation agency in the UK is easy. Finding one that can turn outbound activity into qualified pipeline is much harder.
Agencies vary significantly in how they work. Some focus primarily on cold email. Others specialise in appointment setting, cold calling or outsourced SDR teams. And while one provider may measure success by meetings booked, another may stay involved further into qualification and pipeline development.
That difference matters when you are deciding where to put your sales budget in 2027.
This guide compares 10 B2B lead generation agencies serving the UK, covering their services, outbound channels, sales models, and the types of companies they best suit.
Before choosing a provider, keep the goal clear: not simply more leads, but more of the right sales conversations with companies your team can realistically close.
Top B2B Lead Generation Agencies in the UK at a Glance
B2B lead generation agencies do not all provide the same level of sales support. Some specialise in appointment setting, while others provide SDR capacity or manage a broader outbound sales programme.
Here is a quick comparison before we look at each agency in detail.
Belkins
B2B appointment setting and omnichannel outreach
Email, LinkedIn, cold calling
Managed lead generation and appointment setting
Callbox
Companies requiring multichannel prospecting across markets
Voice, email, social and other digital channels
Lead generation and sales support
Operatix
B2B technology companies requiring sales development support
Phone, email, LinkedIn
Outsourced sales development
Sopro
Companies looking for managed B2B prospecting
Email-led multichannel outreach
Managed lead generation
Martal Group
B2B technology companies expanding outbound sales
Email, phone, LinkedIn
Outsourced sales and lead generation
Air Marketing
UK businesses requiring outsourced sales support
Phone and digital outreach
Outsourced sales and appointment setting
memoryBlue
Technology companies needing additional sales development capacity
Phone, email, LinkedIn
Outsourced sales development
SalesRoads
Businesses looking for appointment setting and SDR support
Phone and email
Outsourced SDR and appointment setting
Pearl Lemon Leads
Businesses looking for flexible lead generation support
Email, LinkedIn, cold calling
Lead generation and appointment setting
Comparing UK Lead Generation Agencies?
The channel mix is only one part of the decision. Before choosing a provider, look at how they define your ICP, qualify meetings, manage SDR activity and report on opportunities created.
Konsyg combines B2B lead generation, cold calling, email, LinkedIn outreach and outsourced sales execution for companies that need more than lead volume.
How We Evaluated the Best B2B Lead Generation Agencies in the UK
A strong B2B lead generation agency should do more than build lists or fill calendars.
For this 2027 comparison, we looked at how each provider supports the wider outbound sales process, from identifying the right accounts to creating qualified sales conversations.
- The agencies were assessed across six areas:
- B2B specialisation: Whether the provider is focused on business-to-business sales rather than general marketing or consumer lead generation.
- Outbound capabilities: The ability to combine channels such as cold calling, email and LinkedIn rather than relying entirely on one outreach method.
- Targeting and ICP development: How campaigns identify relevant companies, decision-makers and market segments.
- Lead and meeting qualification: Whether the provider goes beyond booking a calendar slot and establishes clear qualification criteria.
- Sales development support: The level of SDR, appointment setting and broader B2B sales outsourcing available.
- Reporting and pipeline visibility: Whether businesses can see what is happening beyond calls made, emails sent and meetings booked.
We used publicly available service information and provider websites to understand each agency’s positioning and delivery model. Where pricing is discussed later in this guide, we only use publicly available figures or clearly identified market benchmarks.
More activity does not automatically mean more pipeline.
Best for: B2B companies looking for an outsourced sales team that manages lead generation, prospecting and appointment setting.
Konsyg takes a broader approach than traditional lead generation providers. Instead of stopping at contact lists or email campaigns, its Sales-as-a-Service model extends a company’s sales team.
For UK campaigns, Konsyg starts with ICP and account segmentation, then identifies relevant decision-makers and builds role-specific messaging. Outreach then runs across cold calling, email and LinkedIn, with SDRs handling follow-ups, qualification and meeting booking.
The focus is on moving prospects further through the outbound process rather than treating every booked meeting as an equal result.
Core services include:
- B2B lead generation
- B2B cold calling
- Appointment setting
- Outsourced SDR teams
- Email and LinkedIn outreach
- Pipeline generation
- Account-based targeting
- Sales development and reporting
A key difference is the level of sales involvement. Companies can use Konsyg for prospecting and appointment setting or extend the relationship into a wider outsourced sales function. This can be particularly useful for businesses entering the UK, testing a new market or increasing outbound capacity without recruiting another internal SDR team.
Konsyg also provides visibility into outreach, responses, meetings and pipeline performance, allowing teams to evaluate more than the number of activities completed.
Consider Konsyg if: You need a B2B lead generation partner that can manage multiple parts of outbound sales rather than a provider focused primarily on lists or a single outreach channel.
Best for: B2B companies focused on appointment setting and structured omnichannel outreach.
Belkins is a B2B lead generation and appointment-setting agency with services covering lead research, sales development, cold email, LinkedIn outreach, and cold calling.
Its approach starts with understanding the target market and identifying relevant decision-makers before running coordinated outreach. Belkins also handles follow-ups, appointment scheduling, and no-show recovery, making it particularly relevant for companies that want their internal sales team to focus on conversations once meetings are secured.
Core services include:
- B2B appointment setting
- Cold email outreach
- Cold and intent-based calling
- LinkedIn lead generation
- Lead research
- Sales development
- Account-based marketing
Belkins also publishes its starting pricing for appointment setting, which can make initial vendor comparison easier for buyers.
Consider Belkins if: Your main objective is building a consistent flow of qualified appointments through a managed omnichannel campaign.
Best for: B2B companies looking for multichannel lead generation with international market coverage.
Callbox provides outsourced B2B marketing and sales support, with a UK operation in London and experience running campaigns across multiple international markets.
Its model combines account-based targeting with several prospect engagement channels rather than depending on email alone. These include voice, email, social outreach, chat, website engagement and webinars.
Alongside prospecting, Callbox supports lead qualification and appointment setting, allowing internal sales teams to focus on opportunities once prospects have progressed further through the outreach process.
Core services include:
- B2B lead generation
- Appointment setting
- Voice outreach
- Email and social outreach
- Account-based marketing
- Data verification
- Webinar and event marketing
Consider Callbox if: You need a multichannel provider that can support UK lead generation alongside campaigns targeting other international markets.
Best for: B2B software and technology companies that need outsourced SDR capacity.
Operatix is more specialised than a general lead generation agency. Its outsourced SDR services are built specifically around B2B software and technology sales.
The company provides outbound sales development teams that identify target accounts, engage prospects, qualify potential customers and create pipeline for internal sales teams.
Its international SDR capability also makes the model relevant for technology companies entering new territories without immediately recruiting a complete sales development team in each market.
Core services include:
- Outsourced SDR services
- Outbound sales development
- Inbound lead qualification
- Prospect qualification
- Pipeline generation
- International market development
Consider Operatix if: You sell B2B technology or software and need specialised SDR execution rather than a broad marketing-led lead generation programme.
Best for: B2B companies looking for a managed prospecting programme with a strong outbound focus.
Sopro is a UK-based B2B prospecting provider that manages outbound campaigns on behalf of sales teams.
Its approach centres on identifying relevant prospects, developing outreach messaging and creating conversations with potential buyers. This makes it an option for companies with an internal sales function that need additional top-of-funnel prospecting capacity.
Instead of expecting internal salespeople to spend large amounts of time researching accounts and starting conversations, an outsourced prospecting model can move more of that work outside the closing team.
Core services include:
- B2B lead generation
- Prospect research
- Outbound prospecting
- Sales outreach
- Appointment generation
- Campaign management
Consider Sopro if: Your sales team can manage opportunities internally but needs additional support consistently creating new prospect conversations.
Already Comparing Lead Generation Agencies?
Before choosing a provider, ask four things: Who will they target? Who will actually contact prospects? What qualifies as a meeting? And what happens when a prospect shows interest?
Konsyg combines targeting, B2B cold calling, email, LinkedIn, appointment setting and outsourced sales execution within one outbound programme.
Best for: B2B technology companies looking for outsourced sales development and international outbound support.
Martal Group focuses on outsourced B2B sales and lead generation, particularly for technology companies. Its model is built around providing external sales resources that can prospect, engage decision-makers and create opportunities for internal sales teams.
This makes the provider relevant for businesses that need additional outbound capacity without immediately expanding their own SDR function.
Core services include:
- B2B lead generation
- Appointment setting
- Outsourced sales development
- Cold outreach
- Account targeting
- Sales pipeline development
Consider Martal Group if: You are a B2B technology company looking to add outsourced prospecting and sales development capacity.
Best for: UK B2B companies looking for outsourced SDR and sales execution.
Air Marketing is a UK-based outsourced sales and lead generation agency. Rather than providing leads alone, its model combines salespeople, data, technology and sales management to support outbound execution.
Its outsourced SDR teams can work as an extension of an internal sales function, helping businesses identify prospects, reach decision-makers and generate qualified opportunities. Air also supports companies entering new markets or adding sales capacity without building the complete function internally.
Core services include:
- B2B lead generation
- Outsourced SDR teams
- Appointment setting
- Inside sales
- Multilingual telemarketing
- Inbound lead handling
- Sales process support
Consider Air Marketing if: You want a UK-based provider that can supply SDR capacity alongside broader outsourced sales support.
Best for: B2B technology companies with complex sales cycles or international growth plans.
memoryBlue specialises in outsourced sales development for technology businesses, including SaaS, cybersecurity, AI, fintech, cloud and enterprise software companies.
Its SDR teams handle account research, prospecting, qualification and meeting generation across phone, email and LinkedIn. The company also supports outbound programmes across EMEA and other international markets, making it relevant for businesses that need to scale prospecting across multiple regions.
Another distinction is its ability to provide dedicated SDR resources that can operate as an extension of the client’s sales organisation.
Core services include:
- Outsourced SDR teams
- Cold calling
- Email outreach
- LinkedIn prospecting
- ICP and account targeting
- Lead qualification
- Appointment setting
- Account-based outreach
Consider memoryBlue if: You sell B2B technology and need dedicated SDR resources for complex or international outbound campaigns.
Best for: B2B companies looking for outsourced appointment setting and SDR support.
SalesRoads focuses on outsourced sales development, helping companies build outbound pipeline without recruiting and managing an entire SDR team internally.
Its model is especially relevant when the internal sales team can handle discovery and closing but needs extra capacity for prospecting and qualification.
Campaigns can cover prospect research, outbound engagement, qualification, and appointment setting before passing opportunities to the client’s sales team.
Core services include:
- B2B appointment setting
- Outsourced SDR services
- Lead generation
- Prospecting
- Lead qualification
- Sales development
Consider SalesRoads if: Your sales team needs additional prospecting and appointment-setting capacity while retaining the later stages of the sales process internally.
Best for: Businesses looking for flexible outsourced B2B lead generation support.
Pearl Lemon Leads is a UK lead generation provider offering prospecting and appointment-setting support across several outbound channels.
Its services suit businesses that need help building prospect lists, reaching potential buyers, and starting new sales conversations without immediately adding internal prospecting headcount.
The model goes beyond purchasing contact data, including outreach and appointment generation.
Core services include:
- B2B lead generation
- Appointment setting
- Cold outreach
- LinkedIn lead generation
- Prospect research
- Outreach campaign support
Consider Pearl Lemon Leads if you are looking for an outsourced prospecting partner that can support different parts of your lead generation process.
How Much Does a B2B Lead Generation Agency Cost in the UK in 2027?
There is no standard price for hiring a B2B lead generation agency in the UK.
Pricing for B2B lead generation agencies in the UK varies considerably depending on campaign scope, target market, outreach channels, SDR resources and the level of qualification required.
Managed programmes may range from smaller monthly retainers to significantly larger investments for complex, multichannel or enterprise campaigns.
The bigger difference is what that fee actually buys.
A campaign built around cold email to one audience is very different from an outsourced sales programme involving account research, B2B cold calling, email, LinkedIn, SDRs, qualification and ongoing reporting.
Monthly retainer
An ongoing managed outbound programme
Which channels, resources and deliverables are included
Dedicated SDR
SDR capacity assigned to your company
Experience, management and how performance is measured
Pay per appointment
Each meeting that meets agreed criteria
Exactly what counts as a qualified meeting
Hybrid model
Base fee plus performance or meeting fees
How fixed and variable costs are calculated
Pricing can also change significantly depending on your target market.
Reaching 500 founders of small UK businesses is not the same job as reaching CISOs at enterprise cybersecurity companies. Account research, buyer seniority, sales complexity, market size, personalisation and the number of outreach channels can all affect the resources required.
The Cheapest Meeting Is Not Always the Cheapest Pipeline
This is where cost per appointment can become misleading.
Imagine two campaigns:
Agency A: £300 per meeting
Agency B: £700 per meeting
Agency A looks considerably cheaper.
But if very few of those £300 meetings become genuine sales opportunities while Agency B consistently reaches companies that fit your ICP and have a relevant business need, the economics change.
The better measures are: Cost per qualified opportunity → pipeline generated → revenue won rather than: Cost per meeting → number of meetings booked
Before comparing proposals, define what a qualified meeting means and ask each agency how it will report what happens after the calendar booking.
For B2B companies with longer sales cycles and higher contract values, that difference can matter far more than finding the lowest monthly retainer.
How to Choose a B2B Lead Generation Agency in the UK
A good agency presentation can tell you what a provider offers. It doesn’t always show how the campaign will actually run.
Before signing with a B2B lead generation agency in the UK, ask questions that reveal how the team targets, communicates with and qualifies prospects.
- Ask How They Build Your ICP
“UK technology companies” is not an ICP.
Industry, company size, geography, revenue, business model, buyer role and relevant buying signals should all influence targeting.
Ask the agency how accounts are selected, where prospect data comes from and how the list will be reviewed before outreach begins.
Poor targeting cannot be fixed by sending more emails or making more calls.
- Find Out Who Actually Contacts Prospects
Ask whether outreach is handled by dedicated SDRs, shared campaign teams or automated systems.
This matters particularly with B2B cold calling. The person speaking to a decision-maker needs enough understanding of your company, market and value proposition to hold a credible conversation when the prospect moves away from the script.
- Define a Qualified Meeting Before Launch
One of the biggest mistakes is agreeing on qualification after a campaign has already started.
Both sides should know what needs to be true before passing a meeting to sales.
That might include ICP fit, the prospect’s role, a relevant business problem and willingness to continue the conversation.
Otherwise, ten agencies can all promise “qualified meetings” while meaning ten different things.
- Look at the Full Channel Mix
Email has a role in outbound. It should not automatically be the entire strategy.
Depending on the audience, a campaign may combine email, LinkedIn, cold calling and structured follow-up across several touchpoints.
Ask why the agency has selected particular channels for your ICP rather than simply asking how many emails it can send.
- Ask What Happens After the Meeting Is Booked
Booking a meeting is not the end of the sales process.
Who handles reminders? What happens when someone does not attend? Are meeting outcomes recorded? Does the agency receive feedback from your sales team? Can messaging and targeting be adjusted based on the opportunities that progress?
These details separate appointment volume from an actual sales development process.
- Check How Performance Is Reported
Calls made and emails sent tell you whether the team is active.
They do not tell you whether the campaign is working.
Reporting should eventually connect outbound activity with metrics such as:
- Conversations generated
- Qualified meetings
- Meeting held rate
- Sales opportunities created
- Meeting-to-opportunity conversion
- Pipeline generated
The further reporting can follow prospects through the sales process, the easier it becomes to judge whether the programme is commercially useful.
- Ask About UK Data and Compliance Processes
UK outbound campaigns also need appropriate processes for handling prospect data and direct marketing.
Ask providers how data is sourced, maintained and processed, how suppression and opt-out requests are handled, and how their outreach processes account for applicable UK data protection and electronic marketing requirements.
An agency should be able to explain its process clearly rather than treating compliance as a line in a proposal.
If an agency cannot clearly explain how a prospect moves from target account to qualified opportunity, meeting volume alone will not solve the problem.
FAQs About B2B Lead Generation Agencies in the UK
What is a B2B lead generation agency?
A B2B lead generation agency helps companies identify, reach and engage potential business customers. Depending on the provider, services can include prospect research, cold calling, email outreach, LinkedIn prospecting, appointment setting, qualification and outsourced SDR support.
How much does a B2B lead generation agency cost in the UK?
Costs vary considerably depending on the campaign, target market, channels and level of sales support required. Managed programmes may use monthly retainers, dedicated SDR fees, pay-per-appointment pricing or a combination of fixed and performance-based fees. Compare what is included rather than looking at the headline price alone.
Do B2B lead generation agencies use cold calling?
Yes. Many agencies combine B2B cold calling with email, LinkedIn and follow-up. The right channel mix depends on the ICP, buyer seniority, market and sales cycle. For some audiences, direct phone conversations can provide context that email engagement alone cannot.
Is it better to outsource B2B lead generation or hire SDRs?
Neither model is automatically better. An internal SDR team offers more day-to-day control and builds internal knowledge. B2B sales outsourcing can make more sense when a company needs additional capacity, wants to test a new market, or doesn’t want to recruit and manage an SDR function from scratch.
What should count as a qualified B2B meeting?
Agree on the definition before outreach begins. At minimum, the prospect should fit the target profile, be a relevant stakeholder and have a credible reason to continue the sales conversation. A calendar booking alone should not automatically be treated as a qualified opportunity.
How long should you evaluate a B2B lead generation agency?
Avoid judging an agency purely on the first few weeks of activity. B2B sales cycles often require repeated outreach, follow-up and timing before opportunities develop. Set clear review periods and evaluate targeting, conversations, meeting quality, opportunities and pipeline rather than expecting immediate revenue from a newly launched campaign.
Choosing the Right B2B Lead Generation Agency for 2027
The best B2B lead generation agency in the UK is not necessarily the provider promising the most leads or the lowest cost per appointment.
It is the one that fits your sales model.
Before choosing an agency for 2027, look closely at how it builds your ICP, reaches decision-makers, qualifies meetings and reports what happens after those meetings enter your sales process.
For some companies, specialist appointment setting will be enough. Others may need cold calling, email, and LinkedIn managed together. Businesses entering a new market or lacking internal SDR capacity may need a broader outsourced sales model.
Whatever model you choose, keep the measurement simple:
Do not stop at leads generated or meetings booked. Look at qualified opportunities, pipeline and eventually revenue.
Build More Qualified Pipeline in the UK
Konsyg combines B2B lead generation, cold calling, appointment setting, email, LinkedIn and outsourced sales development to help companies build outbound pipeline without relying on a single channel or meeting volume alone.
Whether you’re entering the UK, replacing an underperforming lead generation provider or expanding an existing outbound programme, Konsyg can help you determine the right sales model for your market and revenue goals.
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