
complx.co
complx.co is a Select Shopify Partner based in Leicester, United Kingdom offering product and collection setup, store settings configuration, store build or redesign and 24 other services. It is rated 5.0 out of 5 from 6 reviews on the Shopify Partner Directory.
About complx.co
We make your website visitors turn into sales. Award Winning Conversion Focused Website Specialists. 10+ years Shopify experience 100+ 5★ reviews on Google. Trusted by 1000+ brands, retailers & wholesalers since 2017 Get in touch today. Friars Mill, Bath Ln, LE3 6BJ
Services and pricing
- Product and collection setupPrice on request
- Store settings configurationPrice on request
- Store build or redesignPrice on request
- Store migrationPrice on request
- Theme customizationPrice on request
- POS setup and migrationPrice on request
- Headless commercePrice on request
- Website audit and optimization strategyPrice on request
- Ongoing website managementPrice on request
- Checkout upgradePrice on request
- TroubleshootingPrice on request
- Custom domain setupPrice on request
- Custom apps and integrationsPrice on request
- Systems integrationPrice on request
- Conversion rate optimizationPrice on request
- Email marketingPrice on request
- Analytics and trackingPrice on request
- Business strategy guidancePrice on request
- Product sourcing guidancePrice on request
- Site performance and speedPrice on request
- Wholesale/B2BPrice on request
- International expansionPrice on request
- Product developmentPrice on request
- Banner adsPrice on request
- Logo and visual brandingPrice on request
- Product descriptionsPrice on request
- Website and marketing contentPrice on request
Featured work
Silver Direct
We provided this business with a comprehensive website audit, pointing out all of the problems costing them sales from the website and preventing conversion. By the end of it, they saw an increase in retention, conversions and trust.
Dr Vapes | Vaping Brand
We redesigned Dr Vapes’ Shopify store with a focus on conversions and user journey. Bold visuals highlight the award-winning Panther Series, while improved navigation and filtering make product discovery simple. Clear CTAs, loyalty rewards, and trust markers drive sales, creating a sleek, high-performing site that reflects their global brand.
Maze Fashion | High Street Garment Retailer
Maze Fashion is a UK‑based boutique showcasing top designer brands like Hugo Boss, Emporio Armani, Versace and more. We transformed their Shopify site with refined navigation, bold branded visuals, and seamless category sorting; from new arrivals to designer labels. The site creates an engaging, luxurious shopping journey that reflects the premium in‑store experience.
The Book Bundle | Book Store
We designed and developed a bright, modern eCommerce site for The Book Bundle, a UK-based books retailer. The site delivers seamless navigation and fast checkout, with features like live Feefo reviews, custom wishlists, dynamic search, and tailored category banners which are optimised for conversions and a smooth customer experience. We did the full branding and graphic designs too.
Okiro | Health & Nootropics Retailer
Our team crafted a polished eCommerce site for Okiro UK, a wellness-focussed retailer offering CBD, nootropics, and health supplements. The design features clear “Shop by” categories such as CBD, nootropics, gummies, shilajit etc with intuitive filters, quick‑shop options, and effective promotional visuals. The clean, trust‑building layout eases browsing and accelerates conversions.
Lets Buy Books
We rebuilt Let’s Buy Books with a full redesign and a conversion-focused strategy across both frontend and backend. The new responsive design features cleaner layouts, clearer navigation, improved product structure, and stronger homepage flows to guide users into purchase faster. Overall, we increased the sales, retention and average order value.
Ratings and reviews
- Quality of work
- 5.0
- Communication
- 5.0
- 5 star6
- 4 star0
- 3 star0
- 2 star0
- 1 star0
- Natural Collagen InventiaStore settings configurationApr 29, 2026
Great service. He did for me nice straight forward videos and other stuff round my shop. Will use him again in the future.
- ShopnestProduct and collection setupNov 24, 2025
Excellent service from the team.. From store setup to product input
- Dellows UKOngoing website managementNov 24, 2025
Great support and advice as always
- Dr VapesTheme customizationOct 1, 2025
Suly was a great person to work with, very fast in communication and was easy to work with.