Shopify Plus
Agency 
ECS® is a Shopify Plus agency in London for brands that need design, development, headless, CRO, and ongoing support under one roof. We are the Shopify partner ambitious UK teams trust when growth depends on the storefront.
Explore our specialised teams below — or brief a project and we will route you to the right experts.
WHY CHOOSE ECS®
Shopify agency London
Choosing a Shopify agency in London should not mean picking between design beauty and engineering depth. ECS® is built as a full-stack Shopify Plus partner — strategy, craft, and code in one team — so your store launches stronger and keeps compounding.
Start with the specialised page that matches your brief: Shopify design agency, Shopify development agency, headless commerce, or Shopify support. Prefer a single conversation? Contact us and we will shape the right engagement.
See what clients say on our reviews page.
The ECS® Difference
End-to-end Shopify capability without the agency theatre. Whether you are launching, migrating, or scaling on Plus, we deliver through:
01
Design that converts
Brand-led UX and Shopify web design built to sell — led by our design agency team.02
Development that scales
Custom themes, Plus builds, apps, and migrations from our development agency engineers.03
Headless when it earns it
Hydrogen / Next.js storefronts when a theme hits its ceiling — see our headless commerce agency.04
Support after launch
Retainers for incidents, peak trading, and continuous improvement via Shopify support.
SHOPIFY PLUS AGENCY
Your Shopify Plus agency partner in London
We have spent a decade focused on Shopify — Online Store, Plus, and headless — for fashion, beauty, food, and lifestyle brands. London-based, working with UK and international teams who want senior people on the work, not a bait-and-switch pitch team.
Whether you need a full redesign and rebuild, a Plus migration, headless architecture, or a support retainer, this hub is the starting point. Dive into the specialised agency pages above, or book a call and we will map the shortest path to impact.
Don't just take our word for it — see what brands say about working with ECS® as their Shopify agency.
"Excellent experience with ECS®, helping to build and maintain our site along with various custom apps. Especially good at comms and helping to solve and problems if and when they arise."
"Its been amazing working with you, I can honestly say you are one of the best developers I've worked with."
"The work that they produced was to a really high standard and I would absolutely recommend them."
"Thank you for all your support during Black Friday, we have seen some amazing results!"
"Our main objectives were conversions, site speed and mobile UX. These priorities were executed. I would highly recommend to any brand looking to improve their Shopify Plus site."
"The new site looks fantastic. Orders coming through and everything is running smoothly."
"I can say with complete confidence that you are placed amongst those individuals who know that there is no finish line. You have done yourself proud, and you have excelled at your chosen craft."
"A dream to work with, you completely understood the direction we wanted for our new website and delivered quickly and to the highest quality"
"Amazing! You guys will be doing all our future Shopify developments."
"I was really blown away by the work that ECS® did. Very high quality, with a real focus on flexibility... I would wholeheartedly recommend them."
"After deploying and with the support of Algolia and partner ECS®, the company saw the benefits 'straight away'"
"ECS, it is totally appreciated you are there as others would not be"
"Very helpful, and quick to respond and deal with the issue I was having. Fantastic. Will be using again!"
Frequently Asked Questions
What does a Shopify Plus agency do?
A Shopify Plus agency helps brands design, build, and grow e...Why choose a Shopify agency in London?
A London Shopify agency understands UK retail calendars, pay...Should I go to design, development, headless, or support?
Use design for brand and UX-led storefront work, development...Do you only work with Shopify Plus?
Plus is a core focus, but we also work with ambitious standa...How do projects usually start?
A short discovery call, then a scoped proposal with timeline...Can you support us after launch?
Yes. Many clients stay on retainers for fixes, features, and...LET'S BUILD
YOUR STORE