This London firm brings together leaders in biopharmaceuticals and facilitates meetings that seek to solve industry challenges and improve best practice. Founded in 2009 by Simon Chalk, 58, Christelle Simpson-Platre, 49, Tony White, 56, Darren Whitman, 52, and Steve Jones, 52, it has clients including Bayer, Glaxo Smith Kline and Astra Zeneca. Overseas sales, representing subscription fees from more than 70 member groups, hit £5.1m in 2017. It sold a minority stake to private equity firm Vespa Capital for an undisclosed sum last year.