Garage have adjusted the bearings (local vw speciallist), as they are adjustable apparently? It sounds like they've just tightend the nut and put a new split pin in.... Hmmmm.
Knocking continues....., but less noise and actual vibration/feedback in the car. Mainly on acceleration/braking.
I'll check it out again tonight and see, but suspension continues to feel solid - at least I can't make it knock. So I guess either the bearings have had it and new ones required, or maybe beam bushes. There is not much left thats not new...
James