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your ecommerce cro agency

Stop Sales Leaks. Scale Your Store.

Most shops don’t have a traffic problem — they have a conversion problem. We plug the leaks silently costing you sales and turn lost revenue into growth.

conversion rate dropped?

Your Store Is Leaking Sales

You spend on ads and SEO, but leaks in your site kill the return. More traffic on a leaky site just means more wasted money.

Slow checkout → abandoned baskets.
Poor product pages → wasted ad spend.
Weak SEO → no free traffic.
High ad costs → rising CPC with no return.

If you don’t fix the leaks, every pound spent on ads is half-wasted.

step-by-step growth system

The Sales Leak Labs Growth System

We don’t sell tasks. We build growth engines. Here’s how we do it.

Sales Leak Audit™

Free 10-minute video showing the top 3 leaks costing sales.

90-Day eCommerce Growth Accelerator

Fix leaks, optimise site, run profitable ads, build SEO base.

Learn more
Growth Partner Retainer

Ongoing CRO, ads, SEO for predictable scaling.

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Here’s what happens when leaks get fixed

Fixing Leaks = Fast Results

Even small fixes can unlock massive growth. Here are a few examples of what happens when you plug the leaks.

Checkout Optimisation

Streamlining checkout increased conversions from 1.5% → 3.7%. That’s £21k/month in extra sales without a single extra ad.

Email Flow Optimisation

Recovering abandoned baskets added £12k/month in sales.

Product Page Redesign

Adding stronger trust signals and better images increased add-to-cart clicks by 42%.

Ad Funnel Repair

Aligning ads with optimised landing pages doubled ROAS in 30 days. Same ad spend, twice the return.

About our founder

Built on 9 Years in eCommerce

I’m Margarita Sibilkina. I’ve worked in eCommerce since I was 18, across web dev, ads, and SEO. After years of freelancing and running an affordable agency, I realised cheap gets ignored. What brings joy and results is eCommerce growth. Sales Leak Labs exists to help brands scale profitably.

Sales Leak Labs exists to help brands stop losing money on broken sites and scale profitably.

Ready to Stop Leaking Sales?

Get your free Sales Leak Audit™ today and uncover the 3 biggest leaks costing your store sales.

No catch. No obligation. Just proof. Get your personalised audit in 48-72 hours.

what we achieved so far

Award-winning agency

We’re a leading eCommerce agency in West Yorkshire, recognised with awards for Best Affordable Digital Marketing Agency, Excellence in eCommerce Development, and Best IT Services Company in 2025. Proof that what we do works.
Best IT Services Company of the Year 2025
Regional Award (West Yorkshire)
Best Affordable Digital Marketing Agency 2025
Regional Award (West Yorkshire)
Excellence Award in eCommerce Development 2025
Regional Award (West Yorkshire)

eCommerce Growth Blog

We base our articles on real world examples combined with our own data and experience. Learn from the experts.

AOV Plateau? 11 Split-Tests Shopify Stores Should Run Before Raising Prices

If your average order value has been stuck for months, don’t raise your prices — fix the leaks. Here are 11 proven split-tests Shopify brands should run to lift AOV without scaring off customers or lowering conversion rate.
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The 5 Conversion Killers Lurking on Every Shopify Store (and How to Fix Them Before Black Friday)

Most eCommerce stores don’t need more traffic — they need to stop losing sales. Here are the 5 most common conversion killers we uncover in Shopify audits and exactly how to fix them.
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How to Increase AOV Without Raising Prices

Your ad spend is rising, but profits aren’t. The fix isn’t higher prices — it’s smarter offers. Here’s how to boost your Average Order Value using proven psychological triggers and store tactics that make customers happily spend more.
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Why Your Ads Are Working — But Your Store Isn’t

If your Facebook or Google Ads are driving traffic but your Shopify store isn’t converting, you don’t have a traffic problem — you have a conversion leak. Here’s how to find it, fix it, and finally make your ad spend pay off.
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