Postwar situationAfter the war, the Royal Armored Corp was limited to a mere five tank battalions equipped with the heavy Mark V and Medium Mark C. The government allotted a substantial budget to a new, promising design of a heavy amphibious tank, designed by Colonel Johnson of the Tank Design Department, the Medium Mark D. However, the latter quickly proved far too ambitious and the whole project failed. No public spending was therefore allocated after this experience, but Vickers-Armstrong, already having chosen to follow its own inspiration, designed a new tank, both for internal demand and the export market. Two prototypes had already been built by 1921. The first represented a leap forward compared to wartime designs.
Vickers Medium Mk C