Suspension

Freelander 2 hst 2008......had a new front drivers side spring fitted and shortly after developed what sounded like a top mount knock, I have now replaced the top mount....shock absorber....top drop link....and wishbone and the knock is still there, going over rough ground, sounds like its coming from top of the suspension leg. I have renewed everything, has anybody got any ideas as to what this could be?

I had a top bearing replaced and it started making noises after just a couple of days so took it back to the garage. They took it back out and greased it. Been fine since (3 years)