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Maurice Critchley and family
Engineering
Rank 2017
952=
Worth
£112m
Rise/fall
New
Critchley, 68, bought a small valve maker in 1989, then seven years later snapped up the valves division of industrial group BTR in a £2m deal. Today his Severn Glocon Group specialises in safety-critical valves for the oil and gas industry. In 2015 the family business, based in Gloucester, made £12m profit on £116m sales and is worth £110m, with other assets adding £2m.