Dr Tim Mitchell is CEO of Sareum, which he co-founded in 2003 and floated on the AIM market of the London Stock Exchange in 2004. Sareum was formed from the Structure-Based Discovery department of Millennium Pharmaceuticals Ltd, where Dr Mitchell was Director and responsible for the provision of structural biology and high-throughput chemistry to support drug discovery projects at Millennium in both the UK and US. Prior to that, he was Director of Computational Chemistry at Cambridge Discovery Chemistry Ltd, and a team leader in the Computational and Structural Sciences department at SmithKline Beecham Pharmaceuticals. Dr Mitchell has a PhD in Computational Chemistry and a BSc in Chemistry.