Shopify Support
Agency 
ECS® is a Shopify support agency in London for merchants who need reliable technical ownership after launch. We handle store emergencies, performance fixes, Black Friday readiness, and continuous improvement on Shopify and Shopify Plus.
If you want a senior team on call — not a ticket queue — you're in the right place.
SHOPIFY SUPPORT
Shopify support agency London
Most Shopify stores don't fail at launch — they stall afterwards. Themes drift, apps conflict, speed drops, and peak trading exposes weak spots. As a Shopify support agency, we stay embedded with your store so issues get fixed fast and the roadmap keeps moving.
Our London team supports Plus and standard Shopify merchants with technical troubleshooting, CRO tweaks, theme and app work, and proactive maintenance. Brands like Loop Earplugs and Escentric Molecules trust us for day-to-day ownership and high-pressure moments like Black Friday.
Looking for a structured retainer? See On-Going Success Support, read client reviews, or get in touch.
The ECS® Support Advantage
Support with us means senior Shopify people who already know how ambitious stores are built. We deliver through:
01
Rapid technical response
Break/fix coverage for theme bugs, checkout issues, app conflicts, and production incidents — with clear communication when it matters.02
Performance & conversion
Ongoing speed work, UX fixes, and conversion experiments so support hours also move revenue, not just tickets.03
Feature delivery
Small builds, integrations, and theme improvements shipped inside the retainer so you are not stuck waiting for a new project kickoff.04
Peak trading readiness
Black Friday / peak planning, monitoring, and war-room support so your store stays stable when traffic spikes.
SUPPORT THAT OWNS OUTCOMES
Shopify support services in London
We treat support as product ownership, not a helpdesk. That means knowing your theme, apps, and release history — so when something breaks at 6pm on a sale day, we are not learning your store from scratch.
Choose a flexible ad-hoc arrangement or a monthly retainer via On-Going Success Support. Either way you get Shopify Plus–capable engineers and clear priorities. Building something new? Pair support with our Shopify development agency team.
Hear from merchants who rely on ECS® for Shopify support, peak trading, and ongoing optimisation.
"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 support agency actually do?
A Shopify support agency takes ongoing technical ownership o...Do you offer Shopify support in London?
Yes. We are a London-based Shopify support agency working wi...How quickly do you respond to store issues?
Retainer clients get agreed response windows for urgent prod...Is ongoing support different from a one-off Shopify project?
Yes. Projects deliver a defined scope (rebuild, migration, m...Can you support Shopify Plus and headless storefronts?
Yes. We support Plus Online Store themes, complex app stacks...Do you help with Black Friday and peak trading?
Yes. We run pre-peak checks, monitoring, and live support du...GET RELIABLE
SHOPIFY SUPPORT