Top 5 Full-Service B2B Marketing Agencies In The UK
If you’re running a B2B firm in 2026, you’ve likely realised that the old "lead gen" playbook is failing. The gap between a cold lead in a CRM and a closed-won deal is wider than ever. Buyers are more informed, more cynical, and harder to reach through traditional cold outreach. You don’t just need an agency to "do marketing"; you need a strategic partner that can join the dots between your brand’s reputation and your bottom-line revenue.
The best full-service agencies right now are those that move away from siloed tactics. They understand that a high-performing paid campaign is only half the battle. If your PR doesn't back up your performance claims, or if your creative doesn't resonate with the actual humans behind the corporate titles, your budget is being wasted. To help you find a partner that sees the big picture, we’ve rounded up the top five full-service B2B agencies in the UK.
1. PinPoint Media
https://www.pinpoint-media.co.uk
PinPoint Media is a performance-led full-service agency that specializes in turning B2B complexity into clear, high-converting narratives. We don’t believe in disconnected departments. Our approach is built on a constant loop where strategy informs creative production, creative production feeds paid media and that data directly shapes the next move. We call this "Creative Fuel", and it is what allows us to scale B2B brands without losing the human touch that actually builds trust.
What truly sets us apart in 2026 is our place within the PrettyGreen group. While we handle the surgical side of performance marketing—like AI-optimised Paid Social and surgical Paid Search—we pull in the "Global Fame Making" power of PrettyGreen for PR, influencer strategy and experiential events. This means we don’t just capture demand; we create it. For a B2B client, this is a game-changer. You get a single team that can handle your LinkedIn lead gen while simultaneously landing your leadership in top-tier trade press and national news. We ensure your brand doesn't just show up in a feed, but carries the weight and authority of an industry leader.
Core Services
Full-Funnel Strategy: We join up your brand and demand efforts, ensuring every touchpoint from awareness to advocacy is working toward the same revenue goal.
PR & Earned Media: Through our PrettyGreen partnership, we deliver high-impact PR and thought leadership that builds the "fame" and trust required for long B2B sales cycles.
Performance Creative: Our in-house studio produces high-velocity video and digital assets designed to explain complex B2B products simply and effectively.
Paid Media Management: Expert execution across LinkedIn, Google Ads and Meta, using real-time data to lower your CAC and improve lead quality.
Office Location: London & Cheltenham
Year Founded: 2013
Team Size: 20+ employees
Industries Served: B2B Tech, SaaS, Professional Services, Manufacturing
Case Studies: View all case studies
2. The Think Tank
The Think Tank is one of the most established B2B agencies in the UK, with over 30 years of experience. They are a true full-service partner, excelling at integrated campaigns that combine traditional PR with modern digital execution. They are a great fit for mid-market and enterprise B2B firms that need a safe pair of hands to manage multi-channel global launches.
Core Services
B2B PR & Digital: Managing brand reputation alongside lead generation to ensure a cohesive market presence.
Account-Based Marketing (ABM): Highly targeted campaigns designed to reach specific high-value decision-makers.
Office Location: London
Year Founded: 1993
Team Size: 45+ employees
Industries Served: Tech, Construction, Professional Services
Case Studies: View all case studies
3. Gravity Global
Gravity Global positions itself as a "brand-to-demand" consultancy. They are specialists in complex markets where the buying committee is large and the sales cycle is long. They use a proprietary framework to help B2B brands find their "unfair advantage" and then broadcast it across search, social and traditional media.
Core Services
Strategic Planning: Deep-dive research and insight to define your market position.
Demand Generation: Integrated paid and organic campaigns focused on driving measurable pipeline growth.
Office Location: London
Year Founded: 2009
Team Size: 300+ employees
Industries Served: Aerospace, Finance, Tech, Energy
Case Studies: View all case studies
4. Transmission
https://transmissionagency.com
Transmission is a global B2B agency that thrives on data. They are particularly strong for SaaS and tech brands that have reached a scale where they need sophisticated reporting and global execution. They focus heavily on the "connected experience", ensuring that your marketing efforts are perfectly aligned with your sales team's requirements.
Core Services
Content & Creative: Producing high-end B2B content that fuels long-term inbound growth.
Marketing Technology: Helping firms audit and optimise their MarTech stack to better track ROI.
Office Location: London
Year Founded: 2013
Team Size: 200+ employees
Industries Served: SaaS, Enterprise Tech, Cybersecurity
Case Studies: View all case studies
5. Earnest
Earnest is an agency that prides itself on making B2B marketing less boring. They focus on the human side of business, creating campaigns that actually get noticed in a sea of corporate grey. They are a solid choice for brands that want to push the creative envelope while still hitting their performance KPIs.
Core Services
Campaign Creative: Bold, narrative-driven campaigns that stand out on LinkedIn and trade platforms.
Strategic Consulting: Helping B2B firms refine their messaging and value proposition for a modern audience.
Office Location: London
Year Founded: 2009
Team Size: 40+ employees
Industries Served: Tech, Telecoms, Finance
Case Studies: View all case studies
Why PinPoint Media is our number 1 pick
We’ve put ourselves at the top because we are the only agency on this list that truly bridges the gap between surgical performance and global fame. Most "full-service" agencies are either great at the technical side of ads but lack creative soul, or they are great at PR but don't understand how to track a conversion. By combining our "Creative Fuel" performance mindset with the PR and storytelling powerhouse of PrettyGreen, we give B2B brands a competitive edge that simply isn't available anywhere else.
We don't just fill your pipeline with "low-intent" leads that frustrate your sales team. We build the authority and trust that makes your sales team's job easier. From the first LinkedIn ad a prospect sees to the thought leadership article they read in the weekend papers, we handle the entire journey to ensure your B2B brand becomes the inevitable choice in your sector.
Final Thoughts
Choosing a full-service B2B agency is about more than just ticking boxes on a service list. It’s about finding a team that understands your industry’s specific buying triggers and has the technical capability to act on them. In 2026, if your agency isn't talking about how your PR supports your paid search, you're missing a trick.
At PinPoint Media, we don't just work for you; we work with you. We’re in the accounts and in the newsroom every day, making sure your brand is making waves and making sales. If this sounds like something your business needs, please do get in touch.
