Extra Firm Mattresses FiltersSizeSingleSmall DoubleSmall SingleDoubleKingSuper KingEmperorProduct TypePillow TopPocket SprungSplit TensionTENSIONDualFirmSoftMediumBRANDHarrison SpinksSpring Count2000 - 10000Over 10000Price£0 - £499£500 - £999£1000 - £1499£1500+ Sort by Price Low to High Price High to Low A-Z 20% OFFMiddleham Mohair MattressReady for delivery from 5th AprilWas £1,450 NOW £1,160Dual TensionZip & Link4 Tensions10000 Springs6 Fillings20% OFFHelmsley Egyptian Cotton MattressReady for delivery from 5th AprilWas £1,125 NOW £900Dual TensionZip & Link4 Tensions7500 Springs5 Fillings20% OFFThornton British Wool MattressReady for delivery from 5th AprilWas £900 NOW £720Dual TensionZip & Link4 Tensions5000 Springs3 Fillings20% OFFClifton Cashmere MattressReady for delivery from 5th AprilWas £2,125 NOW £1,700Dual TensionZip & Link4 Tensions15000 Springs7 Fillings20% OFFHarrogate Silk MattressSelected sizes ready for deliveryWas £2,675 NOW £2,140Dual TensionZip & Link4 Tensions18000 Springs8 Fillings20% OFFRichmond Pillow Top MattressReady for delivery from 5th AprilWas £1,600 NOW £1,280Dual TensionZip & Link4 Tensions10000 Springs6 Fillings