I got my 2003 Focus Sport TDCi lowered but it makes a terrible knocking/creaking noise from the front which sounds mainly the driver side.

The knocking only occurs when going over bumps and is much more pronounced when turning slow bumpy corners like into a driveway.

There's no play anywhere and everything is nice and tight. The bushes look OK but difficult to tell about the ARB ones.

Tried searching for a thread about it here but couldn't find one, sorry if it duplicates. Anyone got any ideas? I've heard a few already but want to get some more advice.