Absolute joke, bought a matteress six months ago. All good for the first few months and then we started to notice it sagging. We decided to buy a mattress topper just to save the headache, that has molded into the sag! Decided to raise a complaint, as by this stage we are sleeping in the spare room. They sent and inspector, they a piece of string with two weights over the mattress, and it's within the tolerances, nothing wrong! The bloody top layer of the matteress has separated from the springs, erm... no weight on it, of course it will rise! Called customer services, said that the report is final, I can go to the Ombudsman!! Got to buy a new mattress now as it's not worth the headache! Benson for beds should be ashamed of themselves!