www.jec.org.uk

Is it possible to use the original headlining material as fitted to my X100 and either have it preferably re glued to the original backing card or to a new fibreglass backing?

I had my XKR headlining replaced by G&D Motors, Falmouth 2years ago. Cost was £150 for the trim + £47.50 to remove and refit + vat = £351 total. I asked the same question as you and even considered attempting to re-glue the original lining to the foam backing, which in retrospect after seeing the old lining he returned to me would have been a disaster. The foam was disintegrating and no way would have supported a new lining. I was worried about matching the original colour which was ivory or beige as the rest of the interior was in superb condition for a 2004 model. I was absolutely delighted with the finished product and the cost was extremely good value imho. Good luck!

You don't say where you are located but I took my X100 to Headliner World in Kent and they supplied and fitted for £400. Took them about 3 hours whilst we went for a walk.

Having recently taken the headlining out of a Land Rover Discovery of the same age I can confirm what @DaveO says - everything just disintegrates as soon as you touch it.

If you search the Forum you should find a number of other posts on this subject.

I've just completed this job on my XK8 and like Lucky, I used Headliner-World to supply a complete new headliner in the original Oatmeal colour.
I can confirm that re-using the original cloth is unrealistic! Crumbly foam everywhere! A new fibreglass board, covered in Oatmeal (Beige) or Grey material plus two extra pieces for the A pillars was £120 + £30 delivery. I did the job myself and it certainly took me a lot longer than three hours - more like a couple of days! Not difficult, but fiddly removing all the ancillary stuff.
I've nearly completed an illustrated How-To article for the magazine describing how I did it and if the editors see fit to publish it, it might persuade you to have a go at home!