I'm hoping all the experts on here can point me in the right direction.

I have a hollow sounding knock coming from the rear of my 2005 TDV6, and this happens when I go over small bumps in the road & speed humps etc.

I'm guessing it's either rear anti-roll bar bushes or control arms. Which is the most likely culprit?

Cheers in advance, Ian

P.S. don't think it's the rear tuning weights as I have given these a good swing about and cannot get a squeak out of them.

Knock on braking could be control arm , if it is when you are going straight down the road and small bumps- I would replace sway bar bushings and drop links - cheap to do and any shop that does suspension work should be able to this for you ...

Also double check it is not cargo cover rattling first or loose exhaust pipe ...

Had exactly the same thing - changed the ARB bushes for good quality ones (polybush) and it all went away.