I've also got a knocking/banging from the drivers front over bumps, along with a slightly 'loose feeling' / wobble from the steering wheel. Tracking is ok and wheels are all balanced so will be replacing the following at the weekend, couldnt pin point the issue so thought id just replace the lot - so it better fix it lol!!! Am doing the following:
AP Coilovers
Powerflex front inner wishbone bush
Whiteline Anit-link kit to replace the front rear wishbone bush
Both ARB droplinks
Both Top mounts/bearings
Both balljoints