Derby; Andrew Handyside and Company; 1848-c1910; Iron founders
Ley's Malleable Castings Company; 1874-1987; Foundry producing malleable iron castings, Derby.
Ley; Sir; Francis (1846-1916); First baronet; Industrialist; founder of Ley's Malleable Castings Co, Derby.
Rolls Royce; 1906-; Engineering company; began making aero engines in 1914, a facility now based in Derby.
Strutt family of Belper