This deal from Wowcher
From £225 for a Luxurious 800-Pocket Spring Memory Foam Mattress from FTA Furnishing – save up to 55%
Perfect: For those who want to improve the quality of their sleep. Features: 800 individual pocket springs. Sizes: Available in small double and double. Dimensions: The 4ft small double will be 120cm*190cm, and the 4ft6 double will be 135cm*190cm. Packaging: Vacuum packed and boxed. Warranty: 10 year manufacturer’s warranty.