I think those planes are older than our B52’s. The Nimrod is the military variant of the De Havilland Comet. It’s a late 1940’s design.
If you are going to have a fire, it is best not to have it inside the wing root. Putting the engines in the wing root is very attractive from an aerodynamic point of view, but it leads to all sorts of problems with fire safety and structural integrity.
Not quite. Last production B-52 left the Boeing plant in Wichita in October of 1962.
I thought of the 'Comet' when I saw those engine nacelles imbedded in the wing. Of course the Comet had its own problems with catastrophic airframe failure.