Best B2B SaaS SEO Agencies
A researched, honest look at the UK agencies that actually specialise in B2B SaaS SEO, what each one is genuinely good at, and what to weigh up before you sign.
Before the list
Before the list, the obvious disclosure, I do B2B SaaS SEO myself, so take that into account. But I'd rather you make a genuinely informed choice than just pick me by default. I work directly with every client, no account managers, no work quietly handed to a junior. If that's what you want, see what that looks like below. If a bigger team is the better fit for your product, the agencies below are all legitimate options, and I've tried to be fair about what each one actually offers.
Starting from £750/mo
Take the quiz and get a quoteB2B SaaS SEO is a narrower specialism than most people expect. Trial-to-paid research journeys, “alternatives to” and comparison pages, product-led content, and buyers who try the product before they’ve even spoken to sales all make it a genuinely different discipline from general SEO. Not every agency that lists “B2B” or “tech” as a sector on their website has actually built a process around it, plenty are generalists who take software clients rather than agencies built around them.
Here’s an honest, researched look at four UK agencies that have.
| Agency | Location | SaaS focus | Team size | Notable credentials |
|---|---|---|---|---|
| Skale | London | Exclusive since 2019 | 50+ distributed team | Clients include HubSpot, Typeform, TravelPerk, Attest |
| Grizzle | London | Exclusive since 2016 | ~20 | Clients include Semrush, Pipedrive, PandaDoc, Tide |
| Omnius | London, Belgrade, Dubai | SaaS & fintech since 2021 | 11–50 | Clients range pre-seed to Nasdaq-listed, including Anna Money |
| Impression | Nottingham, London, Manchester, New York | Dedicated offering within a tech-focused agency | ~94 | Proprietary in-house SEO tooling, founded 2012 |
1. Skale #
London, UK. Founded 2019, 50+ distributed specialists.
Skale was built exclusively around B2B SaaS SEO from day one, working with a client roster that includes HubSpot, Typeform, TravelPerk, Piktochart, Attest, Flodesk, and Recruitee across sectors like HR tech, sales enablement, product analytics, and email marketing. Their reporting goes beyond rankings and traffic to SQLs, qualified signups, and new MRR, the metrics that actually matter to a SaaS board.
Genuinely good at: scale and process, built over six years of working exclusively with SaaS companies, with a large enough distributed team to run technical SEO, content, and link building as one coordinated programme rather than three separate vendors.
Worth weighing up: a 50+ person distributed team serving a wide client roster suggests real capacity, but also real competition for attention. Worth asking directly how many accounts your strategist is actually running at once.
2. Grizzle #
London, UK. Founded 2016, team of around 20.
Grizzle built its business around content-led SEO and digital PR for B2B and SaaS companies specifically, with a client roster that includes Semrush, Pipedrive, PandaDoc, Nextiva, ConnectWise, and Tide. Their published Pipedrive case study is unusually transparent: fourfold organic traffic growth, 33% of user signups, and 39% of global revenue attributed to organic work.
Genuinely good at: content as the primary growth lever, backed by a named case study with real, specific numbers rather than a vague “results-driven” claim. A smaller team than Skale means fewer layers between you and the work.
Worth weighing up: content and digital PR are the clear strength here; worth asking directly how technical SEO is resourced if your product has a genuinely complex crawl or indexation problem underneath the content work.
3. Omnius #
London, UK, with additional offices in Belgrade and Dubai. Founded 2021, team of 11–50.
Omnius focuses on SaaS, fintech, and AI companies specifically, with a founding team who spent over a decade inside software companies’ own marketing and demand-generation teams before starting the agency. Their client roster spans pre-seed startups through Nasdaq-listed companies, including Anna Money, Native Teams, and Global App Testing, and their service list leans into newer territory, SEO alongside GEO and AEO for AI-driven search specifically.
Genuinely good at: founder-level understanding of how SaaS and fintech companies actually buy and grow, plus an early, genuine investment in AI-search visibility rather than treating it as an afterthought bolted onto traditional SEO.
Worth weighing up: a newer agency than the others on this list, with offices spread across three cities. Worth asking directly who specifically would own your account day to day.
4. Impression #
Nottingham, UK, with offices in London, Manchester, and New York. Founded 2012, around 94 people.
Impression is a tech-focused digital marketing agency covering SEO, PPC, digital PR, analytics, and web development, with proprietary in-house tooling built to support a data-driven, experimentation-led approach. SaaS and tech sit alongside other sectors here rather than being the agency’s sole focus, but the tooling and technical depth are real.
Genuinely good at: scale and breadth, with real engineering investment behind the SEO offering rather than just headcount. A reasonable option if you want SEO handled alongside PPC, digital PR, or a web rebuild under one roof.
Worth weighing up: SaaS is one vertical among several for a 94-person, multi-office, multi-service agency. Worth confirming your account gets a specialist who actually understands trial-to-paid SaaS research journeys, rather than a generalist applying ecommerce or retail instincts to a software product.
Questions to ask on the discovery call #
Run every agency on your shortlist through the same set of questions. The answers will tell you more than any homepage will.
1
Who specifically will work on my account? Day to day, beyond who's on this call. Ask for the name and role of the person actually doing the work.
2
Can you show results beyond rankings and traffic? Trials, signups, or pipeline influence. A traffic chart going up and to the right isn't proof your SaaS product actually benefited.
3
How do you approach "alternatives to" and comparison pages? This is where a meaningful share of SaaS buying research actually happens, often before a prospect has heard of you directly.
4
How are you handling AI search and GEO right now? Not as a future roadmap item, as a live part of the current programme. Buyers are already asking AI tools to shortlist SaaS vendors.
5
What does pricing actually look like once we're past this call? And what happens if scope changes, or a product pivot shifts your ICP mid-contract.
6
How many other accounts is my day-to-day contact running? A specialist splitting time across a dozen SaaS clients isn't the same as one who's focused on a handful.
7
Who handles technical SEO when the product itself is the website? Single-page apps, gated docs, and a marketing site bolted onto the app's own subdomain all create technical problems a content-only agency won't catch.
FAQ
Questions worth asking before you decide
What should I actually look for in a B2B SaaS SEO agency?
Is a bigger agency automatically a safer choice?
How does working with you compare to any of these?
Prefer one person over an agency?
See what working with me looks like
Same disciplines these agencies sell, applied directly by the person doing the work.
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