Yea had it in the air and cant feel any play, when u say you hear/feel the knock would it be constant or under braking like i said?! there is it slightly when driving but not too bad, but you can deff feel and hear it when the brakes are on!!! all the way till about 20-30. Only reason i wasnt too sure if bearings would cause it cos like i said when mine have gone its been more of a grind/groan/wine than whats happening!

Only thing i didnt do is change them when i did the hub so its a posibility i guess, dont remember it being like this before i changed it but had been a while now and neither of us can remember what it was like

The discs were skimmed many years ago as a mate who was a ford master tech had them kicking about from a customer who wanted new ones fitted even thou they were ok so he said just get them lightly skimmed just to clean them up a bit, guess would be adviseable to check them really just to be safe too but dont have a dti myself.

But shes sure it was juddering really bad before i changed the brakes for cossie ones which is why i dont think its them, obviously they brake a shit load better as the old ones were pretty crap so it would make it judder more!!