Right so this is my thinking at the moment - a list of parts and a process of elimination - let me know your thoughts!
Wheel Bearing - Wheels arent grinding or making any noise whilst in motion
Discs - possibility but unlikely as the car doesnt struggle to accelerate.
pads - same as discs, they arent biting
Shocks - Could be - the gaiter is split.
unsure if it would give these symptoms.
Springs - could be - they dont look damaged although on the passenger side theres a bit of almost loose plastic underneath the spring and inbetween the bottom of the shock where the spring sits...a plastic lining or something?
Top mounts - not much in the way of grinding whilst steering so I dont believe so.
Steering rack - well the mechanic did report that the rack had play in it but not enough to make the left side go sloppy.
Wishbone - It could be...likely though? the ball joints are almost new.
Anti roll bar bush - I dont understand the ARB set up on the Megane, my old Saxo was a lot simpler! drop links need replacing or tightening up? they look original...
Lower ball joint - see wishbone clause
CV Joints - I thought a failed ball joint was a situation where the boot split and is a constant gring almost?
Power steering pump - suggested by Halfrauds when they did the tracking (Badly and still having issues as a result)
Let me know what you think guys, this is driving me nuts and the garages both take an age and arent giving the info I want to decide what is what!