Knocking sound over bumps

[Saxblower59]

Hi guys

Been hibernating for quite a while and my car has see very little action. 

But having been stirred in to action by having to get the car through an MOT (it passed I thought i'd asked the garage to have a look at the clonk that was happening over speedbumps or potholes - even at low speeds. 

So they tried changing the droplinks as that was the most likely culprit. But apparently (I got a phone call today) it's still happening although at higher speed. He described the sound as coming from high up. 

Car has new top mounts, and also the B12 kit and the alignment done by Kenny Brown Motorsport in Glasgow. So i'm assuming it's been done right. 

Next step is changing the steering rack and the TRE/Suspension arms. 

Anything else i should be looking at?

It's the one thing that stopping me driving it more. 

Thanks in advance.

Hi
Had my 306 HDi Meridian,  for 16 days now! mine does this too,  it is 16 Years old,  but I am not too worried, it must comes with age !
Andrew (Saxblower)