Tony Langley started his own business in 1976, taking on the orders of a company owned by his grandfather that had gone into liquidation. He taught himself engineering while running his company which now makes cement cooling machines, dockside cranes and the like. Retford-based Langley Holdings turned in a £75.8m profit on £694m sales in 2013.
Latest turnover: £694m
Five-year rise in turnover: 84%
No. of employees: 4042
Five-year rise in employment: 78%