Well, I've jacked it up, no movement at all in the wheel bearings, top mount is fine, strut doesn't look bent, arb looks good (although flaking powder coat), drop links look fine, and there doesn't appear to be any movement in the bushes in the bottom wishbones which both appear to be straight.

So I'm stumped

Intend replacing it all eventually, well, struts, springs drop arms, but it all looks fine at the mo