Weighing 80 tons the TOG II* is the heaviest tank at the Tank Museum. It was designed on the premise that World War II would evolve in the same way as the First World War.
The Heavy Tank, TOG II, was a prototype British super-heavy tank design produced in the early part of the Second World War in case the battlefields of northern France turned into a morass of mud, trenches and craters as had happened during the First World War.
The tank was fitted with four different gun turrets between 1941 and 1944, ending up with the type of turret designed by Stoddart and Pitt for the A30 Challenger Heavy Cruiser Tank. This mounted a 17pdr gun, making the tank a TOG II*.
In the end it never went into production, but as part of the Flames of War Mid-War Monsters range you could buy it and use it in alternate history games. I bought a boxed set of three.
See the workbench feature on these huge tanks.