🇬🇧 Performance Marketing · United Kingdom
Every channel, one number: profitable growth
Performance marketing means every unit of spend is accountable. We unify paid search, paid social, CRO and analytics into one growth engine measured on cost per acquisition and return on ad spend — not impressions.
In short
iGrowix performance marketing combines paid search, paid social, conversion rate optimisation and analytics into a single revenue-focused programme for businesses in the UK. Engagements start from £869/mo and are measured on CPA, ROAS and payback period.
What's included
Full-funnel media buying
Google, Meta, LinkedIn, TikTok and programmatic — planned as one funnel, not competing silos.
Conversion rate optimisation
Structured A/B testing on landing pages and checkout flows. Small lifts in conversion compound every channel's ROI.
Measurement & attribution
GA4, server-side tagging and attribution modelling so you know which channels genuinely drive revenue.
Creative testing engine
A weekly cadence of ad creative testing — the biggest performance lever in paid media today.
The work, made visible
What one accountable funnel looks like
Performance marketing collapses every channel into one view: what it costs to acquire a customer, and which combination of channel, creative and page does it cheapest.
Blended performance — All channels
Last 12 monthsRevenue
£1.2M
▲ 142%
Blended CPA
£38
▼ 34%
Payback
41 days
▲ from 92
Revenue vs. spend — trailing 12 months
Google Search
£31 CPA
Meta prospecting
£42 CPA
Retargeting (all)
£12 CPA
Experiment log — CRO programme
Last 12 monthsTests run
38
▲ 12 won
Conv. rate
4.1%
▲ from 1.9%
Uplift value
£214K
▲ annualised
Sitewide conversion rate — test by test
Illustrative examples showing typical campaign patterns — not a specific client account. We'll share real, anonymised case data on a discovery call.
Our process
01
Growth audit
Full-funnel audit of media, tracking and conversion paths.
02
Fix the funnel
Tracking corrected, landing pages optimised, quick wins shipped.
03
Test & learn
Structured experiments across channels, creative and audiences.
04
Scale winners
Budget reallocated weekly to the best-performing combinations.
One funnel, one number: how performance marketing differs from 'running ads'
Most businesses buy marketing in fragments: an ads freelancer here, a social agency there, a developer who owns the website nobody measures. Each fragment optimises its own metric — clicks, engagement, uptime — and no one owns the number that matters: what it costs to acquire a customer and what that customer is worth. Performance marketing is the discipline of managing all of it as one system, with budget flowing continuously to whatever produces customers cheapest.
In practice that means one team accountable for media buying, landing pages, conversion tracking and creative — because the levers interact. A landing-page improvement cuts acquisition cost across every channel simultaneously. A tracking fix reveals that the 'expensive' channel was actually the profitable one. Managing these levers separately isn't just inefficient; it's how businesses in the UK end up scaling the wrong channel for years.
The measurement stack: decisions on truth, not dashboards
Every engagement starts with measurement, because optimising against wrong numbers is worse than not optimising. We rebuild the stack end to end: GA4 configured around your actual conversion events, server-side tagging to survive browser privacy changes and ad blockers, offline conversion imports from your CRM so closed deals — not just form fills — flow back into the ad platforms, and UTM discipline so every visit is attributable.
Then we confront attribution honestly. Last-click flatters search; platform-reported numbers flatter everyone. We triangulate: platform data, GA4 modelling, and where spend justifies it, simple incrementality tests — pausing a channel in one region to measure what actually changes. The result is a decision-grade view of which channels genuinely create customers versus which ones take credit for customers you'd have won anyway.
Creative testing: the biggest lever in modern paid media
Since automated bidding took over auctions, the algorithms have levelled the playing field on targeting and bids — what remains is creative. The ad itself now determines most of the performance difference between competitors, and the only way to get great creative is to test relentlessly. We run a weekly cadence: new hooks, angles and formats shipped every sprint, losers killed fast, winners scaled and iterated.
Testing is structured, not random. We test messages before executions — establishing whether price, speed, quality or trust moves your audience — then produce variations on the winning message. Every test has a hypothesis and a minimum sample; every result feeds a growing playbook of what works for your brand specifically. Six months in, that playbook is an asset competitors can't copy, because it's built from your data.
Conversion rate optimisation: compounding the whole funnel
Doubling your conversion rate has the same effect as halving every CPC you'll ever pay — which is why CRO sits inside our performance programmes rather than beside them. We instrument the funnel with heatmaps, session recordings and form analytics to find where real visitors hesitate and abandon, then run a prioritised testing roadmap against those friction points: value proposition clarity, proof placement, form design, checkout steps, mobile experience.
Tests run to statistical significance and honest conclusions — including null results, which teach us where the ceiling is. The compounding effect is dramatic: a programme that lifts conversion 5% a month roughly doubles funnel efficiency in a year, and every improvement multiplies the return on all media spend, forever. It's the closest thing paid marketing has to interest on savings.
Scaling: when to pour fuel, and on what
Scaling too early burns budget on an unproven funnel; scaling too late leaves market share to competitors. Our rule is simple: prove unit economics at small spend, then scale in steps while watching marginal — not average — acquisition cost. When the marginal customer from a channel starts costing more than they're worth, growth budget moves to the next channel rather than pushing a saturated one past profitability.
Engagements start from £869/mo and are measured on the targets we agree upfront: cost per acquisition, return on ad spend and payback period. Reporting is weekly during scaling phases, monthly in steady state, and always in the language of profit rather than platform metrics. Typical outcome after the first optimisation quarter: 20–50% better acquisition costs on the same budget — before scaling begins.
Is performance marketing right for you? An honest fit-check
Performance marketing produces its best results under specific conditions, and we'd rather tell you them upfront than discover a mismatch three months in. It fits businesses that can handle more customers (capacity to fulfil what the funnel produces), know or can calculate what a customer is worth (so targets mean something), have enough margin to buy customers profitably at market CPCs in the UK, and can commit a media budget large enough to generate decision-grade data — typically at least twice the management fee. If that's you, an integrated programme from £869/mo will nearly always outperform a collection of disconnected channel vendors.
It fits less well when the economics aren't ready: businesses still finding product-market fit, margins too thin to buy customers at auction prices, or founders who need every test to win (testing means some losses — that's where the learning comes from). In those cases we'll usually recommend starting smaller — a conversion-focused website and local SEO foundation — until the unit economics support paid scaling. Around one enquiry in five ends with us advising a smaller engagement than the one requested. It costs us revenue in the short term and wins us referrals for years, which is the better trade.
Performance FAQs — United Kingdom
What is performance marketing?
Performance marketing is digital marketing measured and optimised on outcomes — leads, sales and revenue — rather than impressions or reach. Budgets shift continuously to the channels and creatives producing the best cost per acquisition.
How is performance marketing different from just running ads?
Running ads is one channel executed in isolation. Performance marketing manages the whole funnel — traffic, landing pages, tracking and attribution — as one system, so improvements compound and budget follows evidence.
What results should I expect?
After a 4–8 week optimisation phase, clients typically see 20–50% improvements in cost per acquisition versus their previous setup. We agree target CPA and ROAS upfront and report against them monthly.
Ready to talk performance?
Get a free, no-obligation strategy call and a clear plan for your next 12 months of growth — wherever in the world you are.