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Google Ads growth for ambitious eCommerce brands.

We manage and optimise Google Ads for eCommerce brands across the UK & EU - focused on profitable growth, clean tracking, and fixed performance.

Google Partner
Microsoft Advertising Partner
Google Ads performance dashboard overview
10+ Years Experience

Deep expertise in paid media and eCommerce.

eCommerce Focused

We work exclusively with eCommerce brands.

UK & EU Brands

Proudly supporting brands across the UK & EU.

Performance-Driven Strategy

Every decision is backed by data and focused on profit.

About Semstar

Specialist Google Ads agency for eCommerce growth.

Semstar is a performance marketing agency built for eCommerce brands that want more from Google Ads. We combine strategic campaign management, feed optimisation, and advanced tracking to drive measurable, profitable growth.

Account audits & recovery Advanced tracking & attribution Feed & Merchant Center optimisation Landing page & CRO insights High-ROAS campaign management Transparent reporting & strategy
Semstar analytics workspace with eCommerce performance dashboard
Our Services

How we help your brand grow.

Google Ads Management

Full-service account management focused on profitable growth, efficiency and scale.

Performance Max & Shopping

Expert setup and management of PMax and Shopping campaigns that drive results.

Merchant Center / Feed Fixes

Fix disapprovals, optimise feeds and hidden product visibility issues.

Tracking & Attribution

Server-side tracking, conversion measurement and attribution that fuels better decisions.

Landing Page Reviews

CRO-focused reviews to improve conversion rates and increase ROAS.

Growth Strategy

Data-led strategies and roadmaps to enable sustainable, profitable growth.

Featured Results

Real results for real brands.

View more case studies ->
RevenueGBP 482,731

Home & Living Brand (UK)

Scaled revenue by 76% in 6 months with a refreshed strategy, feed fixes and PMAX.

ROAS 6.91xConv. +64%CPA -31%
RevenueGBP 1,246,890

Fashion eCommerce Brand (EU)

Full-funnel growth across 11 markets with Shopping and PMAX optimisation.

ROAS 7.34xConv. +68%CPA -28%
RevenueGBP 312,556

Beauty Brand (UK)

Recovered Merchant Center, improved tracking and scaled profitably.

ROAS 5.87xConv. +53%CPA -26%
What Our Clients Say

Trusted by eCommerce brands across the UK & EU.

★★★★★

"Semstar transformed our Google Ads performance. Finally, we're scaling so efficiently and things feel rock solid."

James Carter
CEO, Northview
★★★★★

"Outstanding knowledge of Google Ads and Merchant Center. Semstar feels like an extension of our team."

Sophie Williams
Head of Marketing, PureGlow
★★★★★

"Transparent, proactive and results driven. Semstar feels like an extension of our team."

Daniel Foster
Founder, Thread & Co.
★★★★★

"We saw immediate improvements and long-term growth. Highly recommend Semstar."

Olivia Bennett
Marketing Director, Wild & Free
Our Process

Simple process. Serious results.

1
Audit

Audit

We deep-dive into your account, tracking, feed and competitors to find growth opportunities.

2
Strategy

Strategy

We build a data-led strategy tailored to your goals, margins and market opportunities.

3
Scale

Scale

We execute, optimise and scale campaigns to deliver profitable, sustainable growth.

Ready to scale your eCommerce brand?

Book a free strategy call and let's map out your next stage of profitable growth.

Book a Strategy Call No lock-in contracts. Just results.