The Siddeley-Deasy Motor Car Company Limited was a British automobile, aero engine and aircraft company based in Coventry in the early 20th century. It was central to the formation, by merger and buy-out, of the later Armstrong Siddeley Motor and Armstrong Whitworth Aircraft companies.

The Rover Company Limited was a British car manufacturing company that operated from its base in Solihull in Warwickshire. Its lasting reputation for quality and performance was such that its first postwar model reviewed by Road & Track in 1952 was pronounced finer than any but a Rolls-Royce. Rover also manufactured the Land Rover series from 1948 onwards, which spawned the Range Rover in 1970, and went on to become its most successful and profitable product — with Land Rover eventually becoming a separate company and brand in its own right.