35 WOMEN UNDER 35 2016: Cassandra Stavrou, 32

Stavrou quit her job at ad agency BBH to start healthy popcorn brand Propercorn with her best friend Ryan Kohn. Launched in 2011 and first stocked in Google HQ, Propercorn can now be found in more than 15,000 retailers, including Tesco, Waitrose and Morrisons. The business turns over £10m and sells two million packs of Propercorn every month.