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Thomas Mackie and family
Electrical goods
Rank 2017
274
Worth
£456m
Rise/fall
£76m

Kenilworth-based CEF was founded in 1951 by a former wartime RAF radio operator. It is now the UK’s largest electrical wholesaler and is run by Mackie, 29, the founder’s grandson. Profits at its parent company sparked up to £84.6m on £510.6m sales in 2015-16 and assets increased by about £76m to £120.1m. We raise the family, mainly based in Switzerland, to £456m.