DO NOT TOUCH THIS COMPANY WITH A BARGEPOLE! is the best advice I can give anyone wishing to purchase a new mattress. Had I read the reviews before, not after purchasing said mattress from them, I would not be writing this review, as I would have gone elsewhere to spend my hard-earned money! To cut a long story short, it is dipping in the middle, already more than the "completely normal 20mm" they state in their "Care and Maintenance Instructions" leaflet, even though I have only had it a few months. Their technician said there is no manufacturing fault, so I have contacted The Furniture Ombudsman, and am in the process of trying to sort this out. I did not want this problem, all I wanted was a new mattress!!