Cheers, @Brydo My floor is concrete and it seems pretty flat. Will get it checked. Think it may have been screeded when we re-did the kitchen some four years ago. Not worried if it has to be re-done. Cookie’s domain gets used a very great deal and it really has to be right.
The colour factor worries me too. It is one of the factors which knackered the cork tiles. Those in direct sunlight have been bleached white. Intend to check colour fastness of whatever we choose if we go with vinyl.
Wish I’d tried the waterproof rug idea. Might have stopped the rapid wear at sink and prep worktop. Trouble is I’d have been tripping over the damn thing all the time!