James Thomson is an independent iOS and Mac developer in Glasgow, Scotland, best known for PCalc, the scientific calculator he started in 1992 and has been refining ever since. He runs the two-person studio TLA Systems with his wife, having earlier worked at Apple on the Mac OS X Finder and Dock. A fixture of the Apple developer community, he is also a podcast pundit on Relay FM and The Incomparable, a conference speaker, and a Dungeons & Dragons player who photographs squirrels on the side.

Sandy Macrae is a Scottish physician-scientist who has led Sangamo Therapeutics, the Brisbane, California gene-editing pioneer, as President and CEO since June 2016. Trained at Glasgow and Cambridge - where Nobel laureate Sydney Brenner supervised his PhD - he ran emerging-markets R&D at GSK and was Global Medical Officer at Takeda before staking his career on zinc finger technology and genomic medicines for rare and neurological diseases.