We purchased a mattress which was delivered last October 2020 for our spare single bed. It was an expensive mattress a firm support one. This mattress has hardly been slept in only when my wife has been sick have I slept in it and I am not 9stone. Last month we noticed that there was a dip in the middle of the mattress. We contacted them to be told we needed to rotate the mattress for a month. We have done this and for the past month no-one has slept in this bed. We today have contacted them to be told we needed to send photos of the full mattress together with photos of the dip etc., We have done all this only to be told that the dip is in line with the manufacturers limit of 3/4cm which happens to a mattress within the first year. Hardly been slept in - a firm mattress - expensive one at that! Good job there wasn't a heavyweight in there is all we can say. Where are they coming from????? Needless to say will never deal with them again and never recommend them to anyone either.