In practice, it was not deemed suitable for the infantry tank role and was classified as a "heavy cruiser".

For the production version, there was a 7.92 mm BESA machine gun mounted in the hull in a barbette to the right of the driver.

This was added to give extra firepower, but at the expense of simplicity - the Vickers and the BESA using different ammunition.

In 1937, the A10 was dropped as an infantry support tank, but in 1938 it was decided to produce an order of 75 as an interim "heavy cruiser".

Total production was 175 vehicles, including the 30 CS versions (see below); 45 were built by Birmingham Railway Carriage & Wagon Company, 45 by Metropolitan-Cammell, 10 by Vickers.

A number of Mark IIs were part of the British Expeditionary Force (BEF) sent to France in the early stages of the Second World War.

The CS (Close Support) version of the Mark II had a 3.7 in (94 mm) howitzer in the turret instead of the 2-pdr.