A. Darracq and Company Limited was a French manufacturer of motor vehicles and aero engines in Suresnes, near Paris. The French enterprise, known at first as A. Darracq et Cie, was founded in 1896 by Alexandre Darracq after he sold his Gladiator Bicycle business. In 1902, it took effect in 1903, he sold his new business to a privately held English company named A Darracq and Company Limited, taking a substantial shareholding and a directorship himself.

Heenan & Froude was a United Kingdom-based engineering company, founded in Newton Heath, Manchester, England in 1881 in a partnership formed by engineers Richard Froude and Richard Hammersley Heenan. Expanded on the back of William Froude's patent for inventing the water brake dynamometer, their most famous creation was the 518 feet (158 m) high Blackpool Tower.