Top B2B UK Demand Generation Agencies 2026
Our 2026 UK Agencies Benchmarking Report has landed, and it’s packed with industry insights. From emerging trends to a definitive ranking of the highest-earning agencies, plus the metrics that matter most to client-side marketers, this year’s report offers a comprehensive snapshot of the agency landscape. This week, we’re shining a spotlight on one key area: demand generation. Read on to discover which agencies made the top 10.
Before diving in, it’s worth understanding how we gathered the data. We surveyed 68 UK agencies, asking participants to select the services they offer across a range of specialisms—including ABM, content marketing, demand generation, and more. They then identified their top three core specialisms from that same list.
From this data, we analyzed the most frequently selected areas. Demand generation ranked as the fourth most selected specialism overall. For clarity, this category includes both demand and lead generation services, such as telemarketing and email marketing.
So, who made the list? Check out the top 10 below:
- Bray Leino
- Ledger Bennett, a Havas Company
- IMG: Intermedia Global
- Omne
- Fox Agency
- Accelera
- The Telemarketing Company
- The SEO Works
- Napier
- The Think Tank
Bray Leino secured the top spot for demand generation, having ranked #2 overall and #1 in the brand category. With a gross income of £27.1 million and a 100% client retention rate, the agency also climbed from #4 to #2 overall between 2025 and 2026, highlighting strong and sustained growth.
For the second consecutive year, Ledger Bennett claimed the #2 position, followed by IMG: Intermedia Global in third place.
Zooming out to the broader dataset reveals an interesting trend: around one-third of UK agencies are focusing their primary efforts on demand generation. So while 74% of agencies reported offering demand generation services, only 23 agencies listed it among their top three core specialisms.
We explored a similar trend last year with Robert Norum in the US market. As he noted: “This could be a question of terminology as you’d think demand generation is pretty implicit in all marketing activities and certainly critical in today’s challenging global economy – but some agencies may have chosen to drill down into a more specific focus area like ABM, channel marketing or one of the other dozen options for their core specialisms.”
This perspective may well apply to the UK landscape too, where demand generation remains foundational—but is often embedded within more niche or specialized offerings.
