I've just removed my front drop links to see if they are causing the knocking (both new OEM parts in last 6 months) they're both fine & have no play. I went for a drive without the anti-roll bar drop-links and it's still knocking, so that rules out the anti roll bar and drop links. Question is do they have a right way up? Just something else to check while it's in bits  Range Rover 4.4 V8 Vogue

No, they go either way up.
Have you checked the anti-roll bar bushes?

Thanks for that I'll get it back together now I disconnected the anti roll bar drop links so the bushes should be fine as it's still knocking  Range Rover 4.4 V8 Vogue

Is it when turning 45-90 degrees?

No it's all the time over ripples in the road, makes a kind of fast knocking noise, sounds like front passenger side suspension. Range Rover 4.4 V8 Vogue

I had the drop links and suspension bushes replaced which did not help. however after using Stevena's advise to loosen and tighten the compliance bush on the tie rod and all the other front suspension components the knocking disappeared. the car was as quiet as a very content mouse no noise nothing almost felt like I was driving a range rover

but now its coming back not as loud as before but still there

what else can it be

compliance bush on the tie rod? What is that>  Range Rover 4.4 V8 Vogue