Conversion rate optimisation for lead-generation businesses
Conversion rate optimisation (CRO) is the process of increasing the percentage of visitors who take a defined action — for a lead-generation business, an enquiry, a call or a booked appointment. It works by measuring where visitors drop out, changing the page or journey, and verifying the change against real traffic. GrowthLine applies it to PPC landing pages for UK service businesses.
What conversion rate optimisation involves
The work runs as a loop, not a one-off project. Measure: instrument the page and journey so every enquiry, call and booking is recorded correctly. Diagnose: find where visitors drop out and why, using that measurement rather than opinion. Change: make one page, form or journey change motivated by that diagnosis. Verify: check the change against real traffic before treating it as proven.
Most published CRO advice assumes A/B-test traffic volumes that typical UK SMB lead-gen pages do not have — a page converting at a few percent needs far more visitors than most local or regional accounts receive to reach a statistically reliable split-test result. We say so plainly rather than running tests that can't finish. The alternative we use is sequential before/after windows, with tracking verified first, so a change is judged against a real period of traffic rather than an underpowered test. This is landing page optimisation applied honestly to the traffic levels that actually exist.
CRO is also the wrong first move in two situations. If you get clicks but zero conversions, check tracking and message match before testing anything — see our clicks but no conversions diagnostic. And if you're benchmark-hunting for a number to compare yourself against, the honest numbers discussion lives at landing page conversion rate benchmarks, because most published averages aren't usable for a lead-gen comparison.
What you get
Conversion rate optimisation services from GrowthLine cover the full journey from ad click to booked lead, not just the page copy:
| Conversion audit | Full journey review — ad → landing page → form → thank-you — with tracking verified before anything else (misfiring tracking is routinely misread as a conversion problem) |
|---|---|
| Measurement setup | GA4 events, form-completion and call tracking configured and tested — no change ships unmeasured |
| Hypothesis backlog | A ranked list of page and journey changes, each with the evidence that motivated it |
| Implementation | Copy, layout, form and offer changes shipped on your pages; where testing shows the page itself is the constraint, a full rebuild via landing page design |
| Verification & reporting | Before/after windows on real traffic; a monthly report of what changed and what it did |
How it works
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Weeks 1–2 — audit and instrumentation
Conversion review plus tracking verification, the same method as our free PPC audit.
tracking verified before any change
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Weeks 3–4 — faults that need no test
Broken forms, ad-to-page message mismatch, slow pages.
fix known faults first
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Weeks 5–12 — change–measure cycles
One change at a time where traffic allows; grouped changes with before/after windows where it does not.
sequential measurement, stated honestly
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Ongoing
Verify, keep what works, compound.
no permanent "testing" theatre
Results, published and sourced
£120k/mo
Recurring contracted work won for a steel fabricator in the first 30 days
Client-reported
£19.97
Cost per lead for a DPF specialist, down from £86.50
Client Google Ads account
~70/mo
Enquiries for a new-start London clinic, from a standing start
Client CRM, 90-day ramp
Every figure is signed off by the client it belongs to. See the case studies
Who it's for
CRO is for businesses that sell appointments, quotes and enquiries — the more each click costs, the more each lost visitor costs, which is why CRO matters most in expensive-click verticals. It's a core part of the work behind PPC for law firms, Google Ads for plumbers and Google Ads for dentists.
We don't do ecommerce basket or checkout optimisation — no ecommerce services exist anywhere on this site.
Pricing
CRO is scoped inside a PPC engagement, or run as standalone CRO services where a landing page or journey needs work independent of ad spend. Fees are published, not quoted-on-request: the full fee table is on PPC management pricing.
Frequently asked questions
What does a CRO agency do?
A CRO agency measures how visitors behave on your site, identifies where they drop out, and makes verified changes to increase the proportion who enquire or buy. For a lead-generation business that means work on landing pages, forms and tracking rather than baskets and checkouts. GrowthLine runs CRO alongside PPC, so the traffic and the page are managed as one system.
What's a good conversion rate for a landing page?
It depends on the traffic source, the offer and the vertical, and most published averages mix ecommerce with lead generation, which makes them unreliable for comparison. We do not publish a single UK benchmark figure here because our dataset does not yet contain a sourced one. Our landing page conversion rate benchmarks guide explains what is known and how to judge your own rate against your cost per click and lead value.
Is 12% conversion rate on a website good?
It depends what is being measured: a dedicated landing page receiving paid search clicks is judged very differently from a whole website counting every page and traffic source. The number that matters more is your cost per lead set against what a lead is worth to you. The benchmarks guide shows the working.
Is landing page optimisation the same as conversion rate optimisation?
Landing page optimisation is conversion rate optimisation applied to one page type: the pages your ads send traffic to. CRO covers the wider journey — page, form, tracking and follow-up. For PPC-led businesses the two mostly coincide, which is why we treat the landing page as the primary CRO surface, and rebuild it through landing page design when testing shows the page itself is the constraint.
Why am I getting clicks but no conversions in Google Ads?
Usually one of three things: conversion tracking that is broken or missing, so conversions happen but are never recorded; traffic arriving on a page that does not match the ad's promise; or a page or form that loses visitors before they enquire. Working out which is a measurement task, not guesswork. We publish a step-by-step diagnostic, and a free PPC audit checks all three.