Convenanter 

Type: Cruiser tank

Nationality: Great Britain

Named A-13 Mark III or Cruiser Mark V. The idea to build a heavy cruiser tank resulted in the Convenanter, a model of the A-13 Mk II with an increased armor. The machine was plagued from the start by cooling problems, which limited its role to training in Britain. It never saw combat.
Identification: The turret of the Convenanter looks like the one of a Crusader, being low with sloped sides but the hull looks the same as the one of a A-13, with only four large road-wheels. The Convenanter had cooling louvres on the hull before the turret.
Built by N/A
Other designation(s): Cruiser Mark V; A-13 Mark III
Based on: Cruiser tank

Convenanter. Thanks to its turret, it bears some ressemblance with the Crusaders. You can make the difference by looking at the road-wheels: there are only four, while the Crusader had five. Note the cooling louvres left in front the the hull.