Well there's good news and there's bad news.
The good news is that the insurers wrote off the X-Type and offered me far more than I ever could have expected as a part-ex on the S-Type. There still remains the renewal premium, as my NCD wasn't protected... Time will tell
But, the S-Type developed a 'Restricted Performance' fault on the way home a week ago last Friday so I took the car back the same day and haven't seen it since. Rumour has it to new EGR units are being fitted.