Update -
One of the engine coolant pipe clips was loose and needed tightening up - kindly done by the AA. Still yet to drive the car to verify the fix, but told it would probably be OK after the system was pressure tested.
I can only summise that during reassembly of the engine for the recall action that this was overlooked as it is really fiddly to get to

.... the man from the AA had to move the engine ECU out of the way to get to the hose clip!
Hopefully if everything is OK then I won't be posting another update from a motorway hard shoulder
