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Michael MacDonald
Engineering
Rank 2017
952=
Worth
£112m
Rise/fall
£8m
James Bond owes his wheels to Luton's MacDonald Humfrey, which builds factory technology for Aston Martin, Jaguar Land Rover and Rolls-Royce. MacDonald, 62, owns nearly 80% of the business, which also provides airport baggage handling and security equipment, and showed £18.4m profit on £67.5m sales in 2015. The company is worth £140m, with MacDonald's stake valued at £112m.