I have an intermittent knocking noise in my MG5 when going over bumps. From the driver's seat it sounds like it comes from the rear nearside. I tried emptying the boot, taking out the boot cover, checking doors and boot fitment, all to no avail. Today when checking for anything loose, I noticed that the nearside ball joint at the top of the hydraulic boot strut has a slight slack movement and when moved by hand, sounds very much like the knocking I heard. The offside equivalent ball joint has no free movement and makes no noise. I'm not sure if the ball joint is a push / pull fit and if I remove and refit it will resolve the problem, or possibly even if a touch of lubrication will help. Has anyone else experienced this? It's only a minor gripe, but when the car is otherwise so quiet it is a bit annoying.