How to Choose a Shopify Agency in the UK

Picking a Shopify agency in the UK is one of the biggest commercial calls you will make in your ecommerce roadmap. Get it wrong and you lose six figures to re-work and a delayed launch. Get it right and the build pays for itself inside a quarter. Here is how to tell the two apart.

Look for senior engineers, not account managers

The most common failure mode in UK Shopify projects is a polished sales process led by a strong account manager who then hands the build off to a junior team. Ask, in writing, who will write the production code and who will design the interfaces. Get their LinkedIn profiles. If the people in the pitch are not the people on the build, walk away.

At WOOWEB DIGITAL every engagement is led by senior engineers and designers. The person you brief is the person who ships.

Shopify Plus experience is non-negotiable above £1m turnover

If your store is doing more than £1 million a year, you are a Shopify Plus business, even if you are still on standard Shopify. Plus unlocks checkout extensibility, B2B, Shopify Functions, Launchpad, Flow and the scripting you need to scale. An agency without shipped Plus stores will hit a ceiling on every commercial requirement you have.

Ask for measurable outcomes, not just screenshots

Anyone can show you a portfolio of pretty Shopify stores. The harder question is what the work returned: conversion lift, average order value, Core Web Vitals scores, time-to-launch against quote. If they cannot quote the numbers, they did not measure them.

Performance is the new commercial baseline

Shopify stores live or die on speed. Google ranks pages by Core Web Vitals. Users abandon checkouts that take more than three seconds to interact. Ask any agency for their average Lighthouse score across recent builds. Anything below 90 on mobile is a red flag.

The shortlist

When you compare agencies, score them on six things: senior team composition, shipped Plus experience, performance benchmarks, measurable client outcomes, end-to-end ownership, and location proximity for kickoffs and milestones. WOOWEB DIGITAL is a Mayfair-based Shopify agency built around exactly these criteria. To talk through a brief, email hello@wooweb.digital.