Service · CRO
Conversion Rate Optimisation Agency That Earns Its Keep
We find the points in your funnel where prospects drop off and we fix them, measured against real revenue, not vanity engagement metrics. Continuous testing, senior people on every test design, no six-week sprint-then-ghost cycles.
What we do
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Diagnostic CRO audit
Heatmaps, session recordings, scroll depth, and funnel-segment analytics, applied to the pages that actually drive revenue. We tell you where prospects drop off, why, and what's worth testing first.
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A/B and multivariate testing
Hypothesis-led tests with quantified outcomes. Runs on your existing GA4 + experimentation stack, no proprietary lock-in. Every test is sized for statistical significance before it starts, not after.
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Funnel + drop-off mapping
Cohort the funnel by traffic source, device, and audience. The 8% drop-off on a category page rarely matters. The 47% on the checkout step does. We tell you which is which and prioritise accordingly.
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Landing page CRO
Most paid traffic lands on pages that weren't designed to convert it. We test message-match, social proof placement, form length, hero structure, and CTA hierarchy, measured by actual leads or revenue, not bounce rate.
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Checkout and cart optimisation
Where ecommerce CRO programmes earn their fees. Field reduction, payment-method ordering, trust signals at the right moment, abandonment recovery, and post-purchase upsell paths.
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Speed and Core Web Vitals
A 100ms slower LCP is a measurable conversion-rate hit. We treat performance as a CRO lever, not a separate technical exercise, every test gets a perf check before it ships, and every fix gets measured against revenue.
How a CRO programme with us actually runs
Most CRO engagements are a 6-week sprint, a deck of recommendations, and silence. Here's the actual rhythm of a Peak Digital CRO retainer.
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Free CRO audit (week 0)
Heatmap + session-recording sweep, GA4 funnel review, top-10 friction points ranked by revenue impact, traffic-volume reality check (is your site even big enough to run statistically meaningful tests?). We tell you what we'd do, and whether you actually need an agency for it.
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Baseline + diagnostic (weeks 1–3)
Tracking gaps closed, GA4 events corrected, funnel cohorts built, statistical-significance thresholds set per page. Most CRO programmes skip this and run tests against bad data. We don't ship a test until the measurement is sound.
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Test programme (month 2 onwards)
Continuous testing, typically 2–4 active tests at any time, sized for significance, prioritised by revenue impact. Winners ship to production within a week of declaring. Losers get documented (the loss is data) and the hypothesis library compounds. No 6-week cycles, no quarterly cliffs.
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Quarterly strategic review
Wins shipped, revenue impact, what the test data actually told us about the customer (often more useful than the wins themselves), and where the next quarter's effort goes. A real human, not a templated PDF.
Where the conversion rate goes, and how we get it back
The reason most CRO programmes don't pay back isn't that the team is bad. It's that the inputs are wrong. A site without statistically meaningful traffic can't run a meaningful test. A funnel without correct GA4 events generates winners that don't survive in production. A 6-week engagement ends just as the testing rhythm starts to compound. The work is right; the structure is wrong.
Peak Digital's CRO programme is structured around what actually compounds. Senior CRO operators design every test, no junior templating someone else's framework against your data. Tests run continuously rather than in sprints, so the testing cadence builds momentum across quarters instead of restarting every six weeks. Every recommendation is connected back to revenue, not just conversion-rate uplift in isolation. A 12% lift on a low-margin SKU funnel is worth less than a 4% lift on the high-margin one, we measure to the metric that pays.
The other thing nobody talks about: a lot of "CRO" wins evaporate within a quarter. Either the test was underpowered (won by chance, not by signal), the segment was too narrow (worked for one cohort, regressed across the rest), or the effect decayed (novelty bias). We size tests for significance before they start, run them long enough to clear novelty effects, and re-validate winners 90 days post-launch. The goal isn't to claim a long list of wins; it's to compound the ones that survive.
For the same reason, we work alongside paid and SEO rather than in a silo. A 20% conversion-rate lift compounds across every existing acquisition channel, Google Ads becomes 20% cheaper per acquisition, SEO traffic earns 20% more revenue, paid social ROAS lifts the same. Paid management and SEO retainers measured against revenue rather than vanity metrics get a measurable boost when CRO is running underneath them. Ecommerce builds with CRO baked in from launch outperform builds that bolt it on later.
The honest caveat: CRO requires traffic. If a page is getting 200 visits a month, no statistical test will conclude in a useful timeframe. We're upfront in the audit about whether your traffic supports a CRO programme today, if not, the right next investment is usually paid or SEO, and we'll say so. The free audit will tell you which side of that line you're on. If you want to see what that audit covers before you book one, our guide to running a conversion rate optimisation audit walks through the whole process step by step.
What clients say
Recent case studies
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Case study | SEO compounding into AI Mode visibility
How 18 months of law-firm SEO compounded into being the top-cited legal source in Google's AI Mode
298 answers Google AI Mode citations
The same content library built during 18 months of an SEO retainer is now the single most-cited source in Google's AI Mode answers for the client's target legal queries. It…
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Case study | SEO + Answer Engine Optimisation
How we launched a public services information site and grew organic clicks from zero to over 34,000 a month in three months
34,612 (Month 3) Monthly organic clicks
A new public-services information site launched from a bare domain. Three months in, the site was pulling 34,612 organic clicks a month and had been picked up by Google's AI…
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Case study · Google Ads for ecommerce
How we compounded a deals ecommerce brand's Google Ads revenue 68x in seven years while holding blended ROAS above 13x
£3.7m (Year 7) Annual Google Ads revenue
Seven years of a Google Ads programme for a deals-and-discounts ecommerce brand. Annual attributed revenue grew from £55k in Year 1 to £3.7m in Year 7 (68x). Blended seven-year ROAS…
Frequently asked questions
How much does CRO cost?
CRO is included in our Google Ads and Meta Ads management retainers, there's no separate fee. The same team running your paid campaigns runs the test programme on the landing pages they bid into, which is how it should work. If you'd like CRO without paid media, we run it standalone by quote, every engagement starts with a free audit and a fixed monthly fee, sized to the scope of the testing programme. Most clients run CRO bundled with paid; that's where the maths works hardest.
How long until I see results?
Diagnostic + tracking remediation lands in month one. The first meaningful test ships in month two. Statistically significant winners typically appear from month three onwards; meaningful aggregate revenue lift compounds from month four to six. CRO is genuinely slower than people pretend, anyone promising a 30% lift in week two is selling vibes.
Do you guarantee a conversion-rate lift?
No. Anyone who guarantees a specific CRO lift is either selling vibes or running their tests until they win by chance. What we guarantee is a structured programme: tests sized for statistical significance, hypotheses grounded in actual user data, and decisions tied to revenue rather than vanity metrics. We've seen 30%+ lifts on individual tests; we've also seen quarters where the data tells us the funnel is already well-tuned and the right answer is to invest in traffic instead. Both are honest outcomes.
What conversion rate should I expect?
Industry benchmarks vary wildly by category. Ecommerce ranges from 1–3% on cold traffic up to 5–7% on warm cohorts; B2B lead-gen forms typically sit at 2–5% of qualified visitors. We don't optimise to a benchmark, benchmarks are aggregate noise. We optimise relative to your own baseline, segmented by traffic source and audience, where the deltas actually matter.
What size site do I need before CRO is worth it?
Statistical significance, not vanity numbers, is the threshold. Roughly: 5,000+ unique visitors per month per page being tested, with at least 100 conversions per month on that page. Below that, tests take so long to declare that the testing cadence collapses. If you're under those numbers, CRO is the wrong next investment, paid or SEO is. We'll be straight in the audit about which side of that line you're on.
Do you guarantee revenue uplift?
No agency that's honest about the work guarantees revenue. What we do guarantee is the rigour: every test sized for statistical significance, every winner re-validated 90 days post-launch (because some lifts decay), every recommendation tied back to a revenue metric rather than a click or a scroll-depth. The structure is what compounds; the individual lifts are what they are.
What testing platform do you use?
Whatever's already in your stack. Most clients are on GA4 with a layered experimentation tool, VWO, Convert, Optimizely, Statsig, or Shopify's native testing for ecommerce. We don't push a proprietary platform; tools are commodity. The diagnosis and the test design are where the value is. If you don't have a testing tool yet, we'll recommend one in the audit based on your traffic volume and funnel complexity, typically the cheapest option that handles your test volume cleanly.
Is CRO just A/B testing, or more than that?
A/B testing is the visible bit. Underneath it sits user behaviour analysis (heatmaps, session recordings, surveys), funnel + cohort analysis (where do segments actually drop off), tracking remediation (most accounts have at least one broken event affecting a key step), and message-market fit work (what your customers actually believe vs what your homepage assumes). A/B tests without that foundation are guessing. We do the foundation.
What does reporting look like?
Monthly: tests in flight, tests declared (winners + losers + the data), revenue impact attributed to shipped winners, what the test data revealed about customer behaviour. Quarterly: aggregate revenue lift, programme ROI, what we'd do differently next quarter. A one-page commentary written by the human running your account, not a 30-tab PDF nobody opens.
Is there a contract lock-in?
No. 30-day notice and we go separate ways. Everything we've built, the test history, the tracking work, the hypothesis library, the GA4 setup, stays on your side. No clawback, no "agency-owned" experiments, no migration fees. If the work isn't worth the fee, you should leave.