Enterprise 100 (E100)

Enterprise 100 (E100) is one of the UK's longest-running private angel investment clubs, operating out of London Business School since 1999. With deep expertise, collaborative spirit, and a passion for innovation, E100 blends serious business acumen with genuine camaraderie, making it a uniquely effective forum for early-stage investors. The club is sector-agnostic and reviews opportunities arising from within and beyond its networks, generally seeing deals ahead of other groups — exclusivity being a key criterion for selection. E100 charges no fees and takes no equity from entrepreneurs, and its by-invitation-only membership is limited to approximately 100 self-certified high-net-worth individuals, roughly a third of whom are London Business School alumni. Its mission is to maintain a not-for-profit, self-funded model while backing high-quality early-stage companies at the Seed and Series A stages.