Then this happened
The clutch failed and took with it the gearbox housing
It also damaged the radiator and took out a water pipe, this is not an issue and we have replacements.
However!
This might be an issue
the flywheel got some real heat by the looks of the clutch friction plate and there is distortion around 3 of the stud holes, quite hard to see on the photos but is about 1.5mm in towards the centre of the flywheel.