Checked the wheel bearings, steering linkages, swivel hub bearings, steering box, coils are captured, steering stabiliser is near new, radius arm and panhard bushes are good and it's still there

Also had a pair of trained eyes look over it all as well, just incase.
When I rest my hand against the tyre and someone else pulls the bull bar from side to side (with force), there is the smallest knock which is felt on the tyre.
Did the same thing with an 80 series and a Disco and had the same knock, but both were worse than mine. Also did it to a front beam axle leaf sprung lux and had no play at all.
Is it a coil thing, or can someone point me in the right direction please.