The Light Tank Mark I to Mark V were a series of related designs of light tank produced by Vickers for the British Army during the interwar period.
Between the First and Second World Wars, the British produced a series of similar light tanks. Wikipedia
Armour: 12 mm maximum
Main armament: .50 in Vickers machine gun
Operational range: 130 mi (210 km)
Unit cost: £7,700 (1927, excluding the gun)