Doing some work yesterday on the XM including greasing the drop link ball joints to see if that perhaps helps - well it beats buying new ones at this time....
Anyway, bit of a visual glance under the bonnet and I noticed something strange with the top radiator hose. Yes, on the inner side of the elbow it has split the outer casing!
So it appears I will be contacting my local supplier tomorrow morning to see if he still has that low km 2nd hand one from the car that I got a lower pipe from 18 months ago.
Stupid cars! Why do we do it to ourselves?