By Alexandra Harper 
B2B tech and fintech companies selling to UK enterprises hit the same wall once early growth slows. Referrals and inbound demand dry up long before revenue targets are met, and account executives end up splitting their week between prospecting and closing.
A B2B lead generation agency can take the prospecting off your plate. The term covers two very different models, and only one books meetings with enterprise buyers. We cover what to check before you sign, from the metrics an agency is assessed upon to whether your business is ready to outsource outbound at all.
What a B2B lead generation agency does
Lead generation agencies
Lead generation agencies in the strict sense run high-volume email and LinkedIn automation. They send thousands of templated messages a month, hand over whoever replies or downloads a gated asset, and report on lead volume. Phone work is rare, because it doesn’t scale the same way.
Sales development agencies
A sales development agency supplies trained sales development representatives (SDRs) who research your target accounts, then work the phones and inboxes until a decision-maker agrees to a meeting.
For complex products with long sales cycles and high contract values, the second model performs better. A buying committee at a bank or a mid-sized software vendor rarely acts on a whitepaper download. Its members respond to well-researched conversations with people who understand their problems.
Hold the agency to meetings sat
Why lead volume misleads
Lead volume is the easiest number for an agency to inflate. A thousand marketing-qualified leads can produce almost no pipeline if the contacts sit outside your ideal customer profile or were never ready to talk.
What to ask about metrics
Ask every agency you speak to which metric its team is paid and managed on. The strongest answer is discovery meetings or demos with decision-makers at your target accounts. Meetings booked is a weaker measure because no-shows count towards it.
Meetings sat ties the agency’s success to the outcome your account executives care about. It also makes the agency’s work easy to check against your CRM.
Define a qualified meeting
Agree on what qualifies a meeting before the first one lands in the calendar. Put it in writing, including which job titles count and what the prospect needs to have confirmed on the call.
Find out who is on your team
Dedicated or shared SDRs
Ask whether the SDRs will work only on your account or split their time across several clients. Shared SDRs cost less. They also carry several pitches in their heads at once, which makes it hard to get deep enough into a technical product to hold a credible conversation with a senior buyer.
A sales development agency that assigns a dedicated team gives you SDRs who learn your product and your market. Over time, they start to sound like part of your company, and prospects stop noticing the difference. Ask who manages the SDRs day-to-day and what happens when one of them leaves.
Check the outreach mix
Why email alone falls short
Email-only outreach is cheap to scale and easy to ignore. Senior buyers at large enterprises sit at the harder end of that average. A phone call puts your pitch in front of the person, and a live conversation lets the SDR handle an objection on the spot.
How to test an agency’s cadence
Agencies that pair phone calls with email, timed across a structured cadence, give themselves more ways to reach those buyers. Ask to see a sample cadence for a persona close to yours. Then ask what share of the team’s day is spent on the phone.
Understand the setup timeline
Good agencies start with a scoping phase before you commit. In it, they size your addressable market with you and set pipeline benchmarks, so both sides agree on what success looks like.
After sign-off, expect the agency to recruit the team and have a campaign playbook running within 30 days. Building the same function in-house typically takes six months or more.
Is your business ready for outsourced lead generation?
An outsourced SDR team amplifies what works in your sales motion. Outsourced outbound pays off when these conditions are in place:
- A defined B2B product that several customers already pay for
- Contract values of $30K a year or more, enough to cover the cost of a dedicated team
- A clear set of target accounts, backed by an understanding of what it costs you to acquire a customer
- Account executives with room in their week to take new meetings
Conclusion
Choosing a B2B lead generation agency comes down to whether the team puts qualified buyers in front of your desired account executives. Judge each proposal on meetings sat and on who does the work.
Before you sign, ask each agency to scope your market with you. A good partner will size your target accounts and set pipeline benchmarks. It’ll also tell you if outbound isn’t the right fit yet.