The Tank Museum is a collection of armoured fighting vehicles at Bovington Camp in Dorset, South West England. I visited the Tank Museum before in 1984, 1997, and 2016, but recently made a return visit.
On the approach to the museum is the FV 4005 Stage 2. This is a Centurion variant.
An experimental tank destroyer with a 7.2-inch mm gun L4, which was a modified version of the BL 7.2-inch howitzer.
It’s not only a huge gun, but also a huge turret. However as a SPG artillery piece, this isn’t too critical, no need to be hull down on a hill ridge.
The project started in 1951/52,and developed in July 1955. It used a lightly armoured, fully enclosed and traversable turret on a Centurion hull.
It did look a little worse for wear, looking at the photograph on Wikimedia, you can see at one point it was in much better condition.

Now there is a lot more rust on the tank.