Castings P.L.C. is a United Kingdom-based iron casting and machining company. The Company is organized into three operating companies, which are considered to be the operating segments: Castings P.L.C. and William Lee Limited are aggregated into Foundry operations and CNC Speedwell Limited is the Machining operation. Castings P.L.C. (Brownhills) supplies spheroidal graphite (SG) iron castings to a range of manufacturing industries from its mechanized foundries. William Lee Limited supplies spheroidal graphite iron castings from its invested foundries in Dronfield, Derbyshire. CNC Speedwell Limited is an invested machining operation focused on the prismatic machining of iron and aluminum castings in Brownhills and Fradley. It produces ductile iron castings, SG iron castings, austempered ductile iron castings, silicon molybdenum castings and nickel-resist castings.