Elms Agency

About

Elms Agency is a London-headquartered Shopify Plus Partner working with brands across the UK and the US. Its focus is conversion rate optimization, SEO and GEO (AI visibility), full theme and store design, and platform migrations, all handled in-house under one roof. The agency has helped 100+ brands build and grow on Shopify since 2018, and it is founder-led: there are no account managers between the client and the people doing the work, and the team that scopes a project is the team that ships it.

What sets Elms apart is that it runs its own stores. Powerlete and Fittr Nutrition are the agency's own DTC brands, built, marketed and scaled on its own ad spend, so every checkout change, paid-social angle and retention flow is tested on the agency's money before it reaches a client. CRO is run as a programme with a hypothesis behind each test, drawing on competitor and category review, session recordings, heat maps and the purchase data already in the store to build a testing roadmap ordered by what would move revenue most.

On the build side, Elms designs and develops custom Shopify and Shopify Plus themes, private and public apps, B2B and wholesale setups, headless builds where justified, and international expansion with Shopify Markets. Migrations from Magento, WooCommerce, BigCommerce, Salesforce, Wix, Squarespace and Visualsoft treat search continuity as part of the build, with URL mapping and redirects planned before design starts. Alongside technical and ecommerce SEO, the team runs generative engine optimisation so brands are cited by ChatGPT, Perplexity and AI Overviews, plus paid ads on Meta, Google and TikTok, Klaviyo email and SMS, and ongoing support retainers with a named developer.

For brands using Zigpoll, Elms can build post-purchase, exit-intent and on-site surveys into a new or migrated Shopify store and feed the responses into its CRO programme, so test hypotheses are grounded in what customers say as well as what the analytics show, and attribution answers sit alongside the paid, search and email reporting the same team already runs.