Buy Single Mattresses from Bed SOS the leading stockist of single mattresses. Our 3ft single Mattresses are available in various styles and prices points. All our single Mattresses comply with UK safety regulations and come with the necessary manufacturer’s warranty. As all our Mattresses are in stock in the UK we can offer free next working day delivery on all our 3ft single Mattresses. Our single Mattresses arrive carefully packed and fit any standard single bed.