GTM Agencies in United Kingdom

Gilroy has been a trusted partner to world-leading B2B brands for 50 years and is recognised as a top 10 Account-Based Marketing team and top 30 UK agency by B2B Marketing. As a B2B full-funnel growth agency based in London, they unite sales and marketing efforts through a data-driven, account-based approach connecting the entire customer buying journey from awareness to advocacy. Their integrated services include media campaigns, demand acceleration, ABM, deal-based marketing, and connected buying experiences. Through detailed research and analysis, they uncover specific needs and pain points of key accounts, crafting tailored messages that address priorities. Creative services refine market position and create clear identity through brand activation. They recently won Silver for Best Use of Creative at the B2B Marketing Awards 2025 for their Thales campaign. With approximately 48 employees and $7 million in revenue, they have developed a unique Generative Readiness scoring system for AI-driven buyer positioning.

Gripped is a London-based B2B digital marketing agency specializing in driving growth for SaaS and technology companies. Founded in 2017 with 11-50 employees, they have helped 160+ SaaS, AI, and tech companies turn strategy and paid media into qualified pipeline that tracks to revenue. They work with B2B SaaS companies from Series A through growth stage, focusing on founders executing go-to-market strategies, marketing leaders filling skill gaps, and venture capitalists growing their SaaS investments. Services include demand generation, lead generation, account-based marketing, content marketing, SEO, marketing automation, inbound marketing, and paid media. Case studies demonstrate growth in traffic by 1567% and 4300% increase in lead flow. Retainers start at £5K/month for focused channel work, with full-service demand generation at £8K-£12K/month. Notable clients include Blackdot Solutions, Nexstor, and Nozzle.

Lesniak Swann is a B2B marketing agency for brands that operate in complex or highly technical sectors. Since 2002, they've worked with B2B clients in telecoms, tech, engineering, construction, and manufacturing. Headquartered in Stoke-on-Trent with an additional office in Manchester, they offer joined-up thinking from seasoned B2B marketers—from rebrands to event stands, from PR to CRM. They find effective ways to build distinction and differentiation in target markets, build brand value and marketing ROI, and develop the full package including positioning, messaging, and visual identity. The agency has averaged 33% growth in recent years, doubling revenue to £3M in 2023, with 110% client retention and 84% pitch win rate. Named to the inaugural IPA Beacon List as one of only 25 UK agencies for high growth. In 2024, they acquired Don't be Shy (HubSpot Platinum partner) to expand digital expertise. Clients include Michelin, Finning Caterpillar, Polypipe, TalkTalk, Uber, M&S Corporate Gifts, and KBR.

Napier is a PR-led, full-service B2B technology marketing agency founded in 1984. With offices in Chichester, London, and the San Francisco Bay Area, plus membership in Eurocom Worldwide (30 agencies, 50 offices across 100 countries), they deliver global reach for technology clients. As winners of Most Outstanding PR Agency in 2018 and 2020, and regularly featuring in PR Week Top 40 Technology Consultancies, Napier is a leading pan-European B2B technology agency. They specialize in content generation, media relations, analyst relations, account-based marketing, and corporate communications for clients in electronics, IT, and industrial technology sectors. Their unique four-step DETERMINE, FOCUS, DELIVER, ENHANCE methodology optimizes B2B tech PR and marketing campaigns. With experienced technical writers, expert translators, and PR professionals maintaining strong media connections, they help innovative B2B technology companies enhance brand awareness across UK, Europe, and North America.

Digital Radish (now Radish Agency) is a London-based ABM and brand agency for global B2B brands who refuse to blend in. Founded by Lorna Charlish and Renaye Edwards in 2013, they became part of Selbey Anderson creative agency group. They won B2B Marketing Agency of the Year at the 2021 B2B Marketing Awards, having won awards every year since inception including four in 2021 for Best Content, Best Sales Enablement, and Agency of the Year. Combining growth strategies with sharp creativity, they make sure brands are known, remembered, and ultimately chosen by buyers. Services span brand strategy, ABM strategy and account selection, creative, content, and activation. They work side by side with clients using insight from customers, stakeholders, and wider market to develop B2B brand strategies and visual and verbal identities. Notable clients include Infosys, Exasol, Citrix, Oracle, Microsoft, Cisco, and HP.

strategicabm is an experienced Account-Based Marketing agency helping B2B technology companies accelerate revenue growth through their proven Modern ABM Journey methodology and comprehensive ABM training programs. They partner exclusively with B2B technology brands to help them win, grow, and retain their most important accounts. Their structured 6-step ABM framework and comprehensive training helps teams execute successful ABM campaigns in-house. As a dedicated partner, they do not just execute campaigns but build internal ABM capabilities for long-term success. Services include ABM strategy development, campaign execution, and enablement programs designed to achieve strategic business goals. They specialize in one-to-one ABM for largest accounts, one-to-few for account clusters, and one-to-many for scaled ABM approaches. Their methodology ensures alignment between marketing and sales teams while delivering measurable pipeline and revenue impact for technology clients.

The Marketing Practice (TMP) is the second-largest B2B agency group globally and the market leader in technology marketing. Founded in 2002 by former IT marketing director Clive McNamara, TMP has grown through strategic acquisitions including Omobono, 90octane, Campaign Stars, and Rombii to deliver fully integrated B2B marketing solutions worldwide. The agency serves blue-chip clients including Amazon Web Services, ServiceNow, Microsoft, Salesforce, Hewlett Packard Enterprise, Palo Alto Networks, and SAP. TMP has been the most-awarded agency at the B2B Marketing Awards, winning 'Best Lead Generation' five times and demonstrating consistent excellence in driving commercial results from marketing investments. Their services span account-based marketing, demand generation, brand development, media, channel marketing, and digital experiences.

The Think Tank is a fully-integrated, result-oriented B2B marketing, PR, and digital agency based in Holborn, London. Officially the most awarded UK agency of 2023/2024 with 64 nominations and 19 wins including Marketing Agency of the Year 2023 and Construction Marketing Agency of the Year 2023, they have more than 30 years of award-winning B2B brand, marketing, digital, and PR campaigns. They provide complete integrated services from brand to digital campaigns, PR to content marketing, strategy to website design and video creation. Their sector expertise spans manufacturing, material science, financial services (banking, FinTech, asset management), professional services, renewable energy, aviation, and logistics. Notable clients include Amadeus, Nasstar, British Standards Institute (BSI), IRIS, Leica Geosystems, Avery Dennison, Oracle NetSuite, and Asendia.

Transmission is the world's largest independent B2B marketing agency, founded in London in 2013 by Chris Bagnall. Combining human expertise and AI to deliver complete go-to-market solutions, they serve enterprise technology, finance, and professional services clients globally. In 2021, Transmission was acquired by Bain Capital Tech Opportunities to fuel global expansion, and in 2025 acquired Earnest, the award-winning B2B agency with offices in London and New York. Core service pillars include Strategy and Planning (market intelligence, audience research, brand positioning, GTM strategy), Creative and Content (brand identity, campaign concepts, whitepapers, videos), Demand Generation (ABM, media planning, paid social, SEO, SEM), and Marketing Technology and Operations (marketing automation, CRM, data management, analytics). Their key differentiator is exclusive focus on complex B2B challenges combining data-led strategy, creative services, and demand generation at global scale.

Velo is a specialist B2B marketing agency crafting marketing for clients targeting niches in technology, industrial, and professional services sectors. Built on recommendation since 2010, they have been on the same mission: to grow B2B heroes by crafting marketing to be proud of. From their SE1 studio near London Bridge, they create websites packed with original photography, video, and compelling copy. Services include strategic advisory with wrap-around agency support, account-based marketing, brand marketing, sales enablement, and search, social, display, and email marketing. They have achieved an all-time high Glassdoor rating of 4.8/5, reportedly the highest of any independent B2B agency in London, with multiple nominations for The Drum Recommends Digital Awards. Notable clients include Troup Bywaters + Anders (the engineering partnership behind The Shard, News UK HQ, and ITV Media Studios) and Cisco Lifecycle Advantage program.