Book Club Associates (BCA) ​was a leading United Kingdom-based mail-order and online bookselling company specialising in book clubs, founded in 1966 as a joint venture between the British retailer W. H. Smith and the American publisher Doubleday. At its peak in the 1970s and 1980s, BCA dominated the industry with over 2 million active members and a 70% market share. Through ubiquitous advertising in Sunday newspaper supplements, it became the nation’s largest mail-order bookseller, distributing over 25 million books annually and defining the reading habits of a generation. In 2026, the Book Club Associates brand was revitalised as a digital-first educational platform. Moving away from its historical mail-order retail model, BCA operates as a curated professional community on LinkedIn. The platform focuses on the practical application of literature within the fields of leadership, personal growth, product management and technology, business development, and psychology. Source: Wikipedia (en)