**** Update *****
Still got knocking noise on the rear of the car.
So have ordered Anti Roll bar bushes, Brackets, and both Drop links, Hope fully by doing all of this, the intermittent knocking noise will go.
As a added extra, I have also ordered the 2x front bolts and washes for the front sub frame too. (Thanks Mandy for your thread)
I'll keep you all posted on the out come
Cheers
Kiwi