Dropped car at dealer this morning, drove with the tech a few hundred yards and I was able to replicate the fault. Service desk advised that there was a TPI which may be related and should rectify the fault. This involved greasing some bearing and something to do with micro movements of the steering wheel????
Anyway 4pm came and I was sent a link to a workshop video, which advised on tyre tread, that a couple of heat shields had been tightened and that steering and suspension was fully checked and all ok.
And that once he moved a bottle of eye drops out of the drivers door pocket the clicking noise stopped!!!!



Tech said that the sound was travelling along the door and on to dash to make it sound like it was coming from the steering.
That bottle had been in there for months, I was a bit dubious about the diagnosis but have not been able to replicate the fault since getting car back!
Talk about embarrassed......effing idiot!
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