It's time for another AFV prototype. Allow me to explain the thought process which led to the above vehicle, the FV 4005, being constructed in 1955: Britain: The USSR has a lot of T-55s, and T-55s are scary. What do we have? Engineer 1: We have a lot of Centurions! Engineer 2: We have a lot of barns! Engineer 3: We have a lot of big guns! Britain: Brilliant! What can we make with those things? That. That thing up there is what. The gun is a 183mm repurposed howitzer because fuck it, and yes, the turret fully traverses. CAN'T IMAGINE WHY IT WASN'T BUILT.