There isn't any unusual noise from the rear when accelerating/decelerating. Sometimes rear creaks at parking speed when going from 'D' to 'R' for instance and sometimes there is squeaking when cornering a low speed (only if turning right). There is some play in the differential which I believe is due to gear wear rather than flexing joints. This can be heard as a slight clunk on the overun or when braking approaching junctions etc.
The wheel alignment did little to resolve the problem.
Forgot to add previously that the steering box has been adjusted by MB to 'take up the slack'.