Mark Hempsell is the Futures Program Director for Reaction Engines Ltd. Former Spacecraft Systems Engineer for British Aerospace Space Division and Senior Lecturer in Astronautics at University of Bristol. Significant expertise in satellite programmes and space infrastructure. A past President of the British Interplanetary\Society and currently Editor of the Society’s Journal. Mark has his B.Sc in Physics from Imperial College (1978) and his M.Sc (with Distinction) in Astronomy and Astronautics from Hatfield Polytechnic (1982). Visit their website at www.reactionengines.co.uk.