Oh good,you found the answer. It's the same stuff that is on my new puma truck, so it's a stock upholstery. I guess Exmoor calls it black span/mondus or modus depending on which of their catalogs you consult.
And @ "Mr I can't spell Arles Blue" - it's actually just a basic black cloth, nothing fancy, and it doesnt look like a checkerboard in real life. I like mine just fine thank you