Gravytrain

Based in Teddington, this ecommerce growth agency has been building and scaling online retail businesses since 1999, working with a small operator-led team. Its client base spans ambitious ecommerce businesses across sectors such as beauty, fashion and food, including brands like Kiki McDonough, Biona Organic, King of Cotton and Bulldog Skincare. The agency positions itself as an embedded partner rather than a project-based supplier, aiming to align its work with clients' commercial outcomes. Services are organised around what the agency calls the ACR framework — Acquisition, Conversion and Retention — treated as an integrated system rather than separate channels. Acquisition work covers paid media, SEO and partnerships; conversion work includes UX/UI design, CRO testing and checkout optimisation; retention covers CRM, email marketing, personalisation and loyalty programmes. A specific area of focus is Shopify, including end-to-end store builds and migrations from other platforms such as WooCommerce, alongside custom ecommerce development. Engagements typically begin with a Growth Audit, a diagnostic stage intended to establish current performance and bottlenecks before any strategy is proposed. The agency also cites experience including over 25 years of operation, work with more than 200 brands, and revenue growth attributed to its client work, framing its method as diagnostics-first and focused on measurable commercial impact rather than isolated marketing tactics.