Co‑operatives UK’s 'What is a co‑operative' defines co‑operatives as member‑owned, democratically controlled organisations that pool resources to meet members’ economic, social and cultural needs, typically reinvesting or distributing profits among members rather than external shareholders; the entry is included in Part 1: The Purposeful Investor to give investors an authoritative example of sustainable, community‑driven business models and to support the chapter 'Your Worth and the Power of the Collective' by demonstrating how member participation, one‑member/one‑vote governance and shared ownership amplify individual agency through collective action.