ok - An update
Put car in 1st, RELEASED handbrake
, chocked wheels and jacked up rear drivers side wheel. I then used the tyre-wrench to try and turn the wheel.
The wheel would turn relatively easily, however, only about 2-inches then it would be solid.
I could turn the wheel the opposite direction 4-inches (i.e back to it's original position plus another 2-inches) and again it would be solid.
Looking under the car when I did this I could see centre of the rear diff lift slightly. I could also see the rear drive shaft turn in either direction 2-inches, along with the rear section of the VC unit.
As mentioned, the wheel, rear diff, drive shaft and rear of the VC will turn approx 2-incges in either direction but no more no matter how hard I tried.
I assume it should continue turning....or should it?
Only one wheel was jacked up, and unsure whether both wheels need to be jacked for a thorough check !?
Any ideas guys?
Cheers