This deal from Wowcher
From £99 (from Desire Beds) for a grey Castle micro-quilted memory foam mattress – choose from six sizes!
Get a grey Castle micro-quilted memory foam mattress. A 13.5 gauge Bonnell open coil spring mattress with a nine-inch deep base. Plus a micro-quilted cool touch panel and a grey quilted border. Moulds to the shape of your body and relieves pressure points. Hypoallergenic and anti-dust mite. Choose from six sizes.