A refined and stately British saloon Armstrong Siddeley was a British engineering group that operated during the first half of the 20th century.

It was formed in 1919 and is best known for the production of luxury vehicles and aircraft engines.

The company was created following the purchase by Armstrong Whitworth of Siddeley-Deasy, a manufacturer of fine motor cars, which were marketed to the top echelon of society.

After the merger of the companies, this focus on quality continued throughout in the production of cars, aircraft engines, gearboxes for tanks and buses, rocket and torpedo motors, and the development of railway carriages.

The Sapphire 346 model was introduced in 1952 and brought power-steering to British cars for the first time.

When it first appeared, it could have been easy to conclude that the 346 was just another re-body of the pre-war models, such was the timidity of its design.

However, it was entirely new underneath, featuring a fresh suspension set-up with co...