Often confused as the ‘Speed 25’ model, with which it shares a chassis, the Royal Automobile Club’s Alvis is in fact a 4.3 ‘Short Chassis’ Tourer with Vanden Plas body. This is a rare combination since just 12 were built, although 11 are known to survive.

Competitively priced at £995 when new, the 4.3 was cheaper than its rivals: the Lagonda Rapide at £1,050 and the Bentley 4¼ Litre at £1,535. With an advanced specification, and superb handling and performance, the car could rightly be described as the supercar of the 1930s, with a maximum speed of 103mph and producing 137bhp at 3,600rpm.

The car has attended important motoring events and been driven to Le Mans, Spa Circuit in Belgium, and even competed in two MSA Euroclassic rallies.