The United Kingdom is Europe’s largest and the world’s third-largest e-commerce market, characterized by near-universal digital adoption and exceptionally high consumer expectations. With virtually every adult shopping online, growth comes from increasing spend per customer rather than acquiring new shoppers. Mobile-first commerce dominates, with 70% of transactions happening on smartphones and apps significantly outperforming mobile websites. The rise of social commerce through TikTok Shop and Instagram is reshaping product discovery, while established marketplaces like Amazon maintain strong positions alongside thousands of independent Shopify stores. Browse our breakdowns to see exactly how brands win in one of the world’s most competitive e-commerce markets.