The Best Enterprise B2B SaaS Agencies

The agency takes a consultancy-first approach, mapping the full acquisition architecture before executing starting at the bottom of the funnel and working back. Their core services span SEO, GEO (generative engine optimisation), content strategy, and analytics and PPC/Paid Media with a focus on building systems that continue to perform without continuous ad spend.

Team 4 is a strong fit for B2B SaaS companies in the £2M–£100M ARR range that are looking to reduce reliance on paid channels, or that operate in specialist verticals where most agencies lack the depth to position effectively. They're less suited to early-stage startups without product-market fit, or companies looking for high-volume content production without strategic underpinning.

Their clients have included companies in construction tech, document management, carbon accounting, and field service software categories where buyers are specific and generic demand-gen rarely works.

Holini is a B2B SaaS and tech PPC agency focused on building predictable pipeline growth systems. They align paid media, landing pages, and analytics so performance is not judged only by platform metrics, but by real business outcomes. Their work is built on three principles. First, deep B2B tech specialization helps them reach proven strategies faster and avoid costly trial and error. Second, systematic processes create a clearer path to predictable results while keeping CAC under control. Third, all work is handled by senior specialists, which means strong ownership, accountability, and hands-on execution. Holini has worked with growth-stage, bootstrapped, and VC-backed B2B tech companies including Omnisend, Veriff, Booksy, Smartcat, Scoro, Livespace, Sonarworks, Montonio, Outvio, Zone, Cherry Servers, and DeskTime. They accept only 3 to 4 new partnerships each quarter so every client gets the focus and senior attention required to deliver against expectations.

‍

Lever Digital is an Edinburgh-based PPC agency built by senior specialists who came out of in-house roles at Seedcamp, Paddle, and other fast-growing European SaaS scale-ups. The thesis is straightforward: too many agencies hand new accounts to junior team members, and most B2B PPC ends up optimising for clicks rather than pipeline.

The agency runs paid media across Google Ads, LinkedIn, Meta, and affiliates, and the standout case study is Uplisting (a bootstrapped vacation rental SaaS) where four years of partnership delivered 5x trial signups, 4x new customers, and 100% year-on-year revenue growth. They were also a 2026 UK Paid Media Awards finalist. No fixed-term contracts.

Best fit for: scaling B2B SaaS and tech companies who want their paid media run by senior practitioners with in-house experience, focused on SQLs and pipeline rather than CTR.

Obility is a performance marketing agency for SaaS and B2B tech companies that focuses on paid search, paid social, and remarketing. They integrate marketing with CRM and sales systems to track real revenue impact. Obility’s programs are analytics-first, helping SaaS companies scale qualified leads efficiently and with clear attribution.

Tinuiti is a full-funnel performance agency that supports SaaS brands across search, social, programmatic, and lifecycle marketing. They emphasise audience strategy, creative, and measurement, stitching together campaigns with attribution models that show true contribution to pipeline.

Tinuiti’s teams operate with a strong test-and-learn culture, helping marketers scale efficiently while improving conversion and retention across longer B2B buying cycles common in software.

SmartBug Media is an award-winning inbound and lifecycle marketing agency that supports SaaS growth across acquisition and retention. They integrate content, marketing automation, RevOps, and paid media to create cohesive buyer journeys and better LTV/CAC ratios.

SmartBug’s team emphasises CRM alignment, analytics, and experimentation, helping SaaS companies scale predictable pipeline. For marketers who want an experienced HubSpot-centric partner, they provide depth across strategy and execution.

Ledger Bennett is a global B2B marketing agency founded in 1985 and acquired by Havas in February 2024, now operating as "Ledger Bennett, a Havas Company" within Havas Media Network. CEO Andrea Glenn led 50% revenue growth in the years before the deal, picking up clients like Expleo, Aptean and Indeed alongside long-standing relationships with GE Digital and LinkedIn.

Two things to know. First, the proprietary "Forever Customer" model and "Fluid Talent" embedded resourcing approach are still in play and are the agency's actual differentiators. Second, since the Havas deal, the offer has expanded to draw on the broader group's CX, ecommerce, and creative capabilities, sitting alongside Havas Business as a 100+ person B2B specialism.

Best fit for: large, multi-region B2B brands (especially in tech, industrial, and professional services) that want enterprise-scale marketing, ABM, and demand gen with the resources of a holding group behind it.

Seer Interactive is a data-driven search and analytics partner for SaaS marketers who want smarter decisions from large, messy datasets. They blend SEO, paid media, CRO, and bespoke data engineering to uncover opportunities others miss, then iterate fast to capture demand. Seer’s ethos is to connect the dots between user intent, content, and conversion paths — turning granular insights into compounding growth across acquisition and revenue.

Silverback Strategies is a performance marketing agency that helps B2B SaaS companies grow qualified pipeline through paid search, paid social, SEO, and CRO.

‍

Their teams work cross-functionally with creative and analytics to build experiments that scale, tightening feedback loops between ad messaging, landing pages, and revenue data. Silverback’s approach is transparent and iterative, giving SaaS leaders clear visibility into what moves MQLs, SQLs, and ARR while keeping CAC efficient.

Fox Agency is an integrated marketing firm for global B2B technology brands, with strong experience in SaaS, fintech, electronics, telco/IoT, IT and cloud, Industry 4.0, and automotive.

‍

The team helps companies grow, reposition, enter new markets, and launch products by pairing strategy and creative with full-funnel execution.

‍

Services span brand and strategy, creative and content, motion and video, media and performance, global PR, events, and consultancy—delivered by in‑house specialists who can work together or as standalone support.

‍

The agency operates globally, including a U.S. presence, and focuses on clear ideas that drive awareness, engagement, and demand.

‍

Its approach is practical: understand the customer, choose the right mix of tactics, and measure results.

Exalt Growth is a boutique SEO and GEO (Generative Engine Optimisation) consultancy run by Jack Boutchard, exclusively for funded B2B SaaS companies between Seed and Series C. Where most SEO agencies have bolted AI search onto an existing playbook, Exalt was built around it from the start.

Boutchard previously led SEO at Dovetail (878% organic traffic growth) and Cascade (670% growth, contributing to a $40M Series A). The work runs on a proprietary framework called EGOS, covering entity architecture, topical authority, technical foundations, and AI citation tracking. Engagements are founder-led, capped at a small number of clients, and remote-first through Slack and Notion.

Best fit for: funded B2B SaaS teams who want SEO and AI search visibility built together rather than bolted on, and who value senior strategic input over a deep agency bench.