Thanks Liam, she's not too shabby for her age.
Following on from my untreated rubber mat as above, I was given the name Koch-Chemie Gummifix Guf for rejuvenating rubber mats so I bought a bottle and it arrived today. I've just applied it and let it dry and can confirm it isn't slippery although you can feel a little more movement under-foot. I've not driven the car yet but I think it might be a good product to keep rubber mats looking good