SaaS link building and content agencies: 7 UK options for product-led companies

What to take away

Why do product-led companies buy links differently?

A product-led company wants searchers to land on pages that lead to a trial or a free plan. Links to a generic blog post rarely move that. The useful work is pairing content that answers a real product question with coverage that points readers to it.

Competition for search attention is heavy. IAB UK's Digital Adspend study for 2025 put UK search spend at £17.9bn, 44% of a £40.5bn digital ad market. Organic pages compete with that paid spend on the same results pages.

The software market itself is crowded but changing. The Department for Business and Trade's business population estimates for 2025 counted 5.7 million private sector businesses, and noted that registered businesses in information and communication fell by 38,000, or 17%, since 2020.

One rule applies at every step. Google's spam policies, updated in August 2026, treat bought links that pass ranking credit as link spam, including in guest posts and advertorials. Paid placements are acceptable when they are marked as paid, so make that a contract term.

Step one: set the search strategy

Decide which product questions you want to own before you hire anyone to write or pitch. Our guide to product-led growth marketing for UK SaaS covers how search fits a self-serve funnel, and the channel strategy guide helps you set its share of budget.

1. Gripped (London)

Gripped is a London B2B agency founded in 2017 that says it works exclusively with B2B SaaS and tech. Its SEO covers technical work, on-page optimisation, content strategy and link building. Work runs in 30-day sprints through four stages, starting with audit and strategy.

It reports on MQLs, SQLs, pipeline value, CAC and payback period. Typical investment is £5K to £15K a month, with media spend paid separately. Contracts are rolling with three months' notice, although its FAQ also mentions 6 to 12 month commitments, so confirm the term in writing.

Step two: produce content worth linking to

Links follow content that someone wants to cite: original data, clear comparisons and product-led guides. These three agencies focus on that stage.

2. Grizzle (London)

Grizzle lists a London address on Paul Street and says it has run digital PR programmes for SaaS companies since 2016. Its content work covers articles, case studies, YouTube videos and product marketing content, starting with audience research and interviews with subject experts.

Backlinks come through its digital PR service rather than a standalone link product. It offers retainers and campaign sprints, and says its digital PR sprints start from $10,000. It also runs its own content platform, Cloudkicker.

3. Velocity Partners (London)

Velocity Partners has offices on Great Portland Street in London and in New York. It describes itself as a B2B marketing agency that thrives on complex tech, with three services: strategy, creative and performance. Its performance service includes search and marketing operations.

It does not describe a link building service on its homepage, so it belongs at the content stage. Use it when the product story is hard to explain and needs a strong narrative before any outreach.

4. Zazzle Media (main office and London)

Zazzle Media calls itself a search and content marketing agency and lists a main office and a London office. It is part of the Stickyeyes Group and IPG Mediabrands. Services include content creation, content distribution, SEO and digital PR, with a team of journalists, copywriters and PR staff.

Its homepage does not mention SaaS or link building by name. Ask for software examples and how distribution turns into links before you brief it.

Step three: earn links and coverage

With content in place, outreach has something to point at. These three agencies are strongest at this stage.

5. Bulldog Digital Media (London)

Bulldog Digital Media lists a London SE1 address and calls itself a specialist SaaS PR agency. It pitches tech, business and startup journalists and covers reactive PR and expert commentary. Pricing is £450 per placement or £200 per brand mention, paid only once the piece is live.

A three-month package costs £2,600 a month and lists ten backlinks and two PR placements, with content and reporting. Coverage logs list the publication, link and authority details. It says outreach typically starts producing coverage within four to six weeks of planning.

6. Hive19 (Brighton)

Hive19 describes itself as a team of UK-based search experts in Brighton. It offers contextually relevant backlinks, digital PR and content written for search and AI answers, and uses its own HiveRank software. A testimonial on its site mentions its work in fintech and SaaS.

It tracks brand mentions, AI citations and traditional SEO metrics. Prices are by quote, and the site says it builds on a client's existing SEO rather than replacing it.

7. Kaizen (London and Manchester)

Kaizen has offices on Scrutton Street in London and in Manchester. It describes itself as an AI-enabled search, digital PR and social agency, offering SEO, digital PR, AI search work and social. The entry point is a free performance audit.

Its homepage does not name SaaS clients or publish prices. It suits product teams that want digital PR and social coverage run by the same agency.

Step four: report on product outcomes

Agree the report before the first link goes live. It should list each link, the page it points to and the date, then tie traffic to sign-ups or trials. Our guide to SaaS marketing key metrics sets out what to track, and CAC and payback targets give you a test for the spend.

Step five: check the contract

Before signing, confirm the notice period, who owns the content, and how paid placements are marked as paid. Our vendor due diligence checklist lists nine checks worth running on any agency. If two or three agencies are close, put them through a supplier comparison with a scoring sheet rather than choosing on the pitch.

The seven at a glance