Conversion Rate Optimisation Services: What You Should Be Paying For

Conversion rate optimisation services cover the work of turning the traffic you already have into more customers. This page sets out what that work should include, what it should cost, and how to tell a specialist from a generalist selling it as a line item.

To have the work handled for you, see the CRO agency service.

What do conversion rate optimisation services include?

A full conversion rate optimisation service covers the whole funnel, not just the landing page. Expect conversion audits and funnel analysis, A/B and multivariate testing programmes, user experience optimisation, landing page design, mobile conversion work, and analytics and conversion tracking that survives an audit. A provider offering testing without the diagnostic work in front of it is running experiments without a hypothesis.

How much do conversion rate optimisation services cost in the UK?

Conversion rate optimisation services in the UK typically cost between £2,000 and £10,000 or more per month, and three inputs set the figure: traffic volume, funnel complexity and testing velocity. SugarNova publishes its three retainer bands, and what moves a brand between them, on the CRO agency service page, so founders can size a conversation before booking a call.

Fee is the wrong benchmark on its own. The right comparison is the revenue at stake in the funnel being fixed, because on a mid-six-figure monthly turnover a single sustained point of conversion is worth far more than the retainer.

How do you tell a specialist from a generalist?

Four questions separate a conversion specialist from a generalist offering CRO as one line item among ten. Ask each one before any proposal is written.

1. How do you decide what to test? A described research process passes. A list of best practices fails.
2. Show me a losing test and what it taught you. A provider who only shows wins is either lucky or editing.
3. Do you report revenue per visitor and margin, or conversion rate alone? Conversion rate can be lifted by discounting, which lowers profit while the dashboard improves.
4. How does this connect to my other channels? A provider thinking in silos will optimise a page while acquisition economics drift.

Where do conversion rate optimisation services sit in the wider system?

Conversion work compounds fastest inside an integrated model, because conversion is the stage that monetises every other channel. Digital PR earns authority, that authority lifts SEO and AI search, organic traffic grows, and conversion work decides how much of it becomes revenue.

Search demand reflects that split. Conversion rate optimisation services carries roughly 2,400 UK monthly searches and cro agency a further 2,900, per Semrush UK at Q3 2026 cluster lock, which is why SugarNova runs a separate page for each buying question.

Buyers who want the fee bands and the break-even arithmetic behind them can read CRO agency pricing UK, which shows the uplift each band must deliver at £100,000, £250,000 and £500,000 in monthly revenue.

Book your Free Growth Audit at book.sugarnova.com/audit and SugarNova will show you the conversion leaks costing you the most, ranked by revenue at stake.

About the author

Shayne Williams is Founder and Group CEO of SugarNova Group, the UK growth group he founded in London in 2016. Shayne has run integrated PR, SEO, GEO, paid media and CRO programmes for DTC eCommerce and high-ticket lead generation brands, and originated the Exit-Led Growth category.

Last substantively updated: 28 September 2026.