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Steve Timoney
Energy services
Rank 2017
962=
Worth
£110m
Rise/fall
New
Established in 1995, Glasgow-based Smart Metering Systems connects, owns and operates metering systems and databases on behalf of the main energy companies and brokers. Entrepreneur Timoney, 52, has sold shares worth about £40m during the four years since leaving the business, which was admitted to the AIM market in 2011 and is valued at £530m. Share sales pre and post-float take him to £110m.