Comprising engineering and building-products divisions, Manthorpe supplies precision-engineered parts to the power-generation and defence sectors worldwide. The Derbyshire business makes gas-turbine engine components for the aerospace, military, energy and marine divisions of Rolls-Royce, using specially designed alloys. Indirectly, the company also supplies parts to aircraft engine manufacturers General Electric, Siemens and Snecma. Manthorpe’s buildings division designs, makes and sells insulation and ventilation products to the housing market. International sales, particularly to continental Europe and America, have risen 53% a year, from £1.6m in 2007 to £3.8m in 2009 under founder Paul Pochciol.