Who the Westwood Memory Foam suits
At £109 for a double, the Westwood is the cheapest mattress on this site by a wide margin, and it exists to answer one question: what is the least you can spend without buying something genuinely bad? The answer here is a real memory-foam-over-support-foam build with a quilted cover, which is a good deal more than the single foam slab most £100 mattresses turn out to be.
It is the right buy for a spare room, a student let, a rental you are furnishing, or a child moving out of a toddler bed. It is the wrong buy as your main mattress if you are an average-to-heavy adult sleeping on it nightly – at that point step up to the 23cm Saffron Comfort Deep or read our best mattress under £300 guide.
Construction and materials
The Westwood is an 18cm two-layer build: memory foam over a supportive base foam, finished with a quilted cover. The base foam is the structural layer and the memory foam does the contouring. That graduated arrangement is what separates a cheap-but-sound mattress from a cheap-and-nasty one, and it is why we score it 8.0 for comfort despite the price.
The Foam People cut every mattress to order in their UK factory, which is how the price stays this low – there is no warehouse of unsold stock and no retail markup. It also means odd sizes for box rooms, caravans and bunk beds are available.
Comfort and support
We score the Westwood 8.0 for comfort and 7.8 for support, the lowest support figure of any Foam People mattress we list. The medium feel is accurate: enough memory foam to relieve pressure at the shoulder and hip, enough base foam to stop a lighter adult sinking through.
The ceiling is depth. Eighteen centimetres is not much material, and once a heavier sleeper compresses the memory foam the base layer is all that remains. Light sleepers and children will be well served; anyone over roughly 13 stone should treat this as a guest mattress only. Our weight and firmness guide explains where the cut-offs fall.
Temperature
Standard memory foam with a quilted cover insulates – there is no cooling technology here at all. In a cool bedroom or for occasional use it is fine. If the room runs warm or the sleeper runs hot, spend £38 more on the Core CoolMax Memory Foam, which adds a temperature-regulating cover for very little money.
Edge support and motion isolation
Edge support is limited, as it is on any shallow all-foam mattress – sitting on the side compresses the perimeter and you lose usable width. Motion isolation is genuinely good, because memory foam absorbs movement rather than transmitting it. For a guest room double shared by two people occasionally, that is the right trade.
Durability, trial and warranty
The 5-year warranty is reasonable at this price, but note the important gap: The Foam People do not offer a home trial. Unlike Emma's 200 nights, you cannot sleep on this for six months and send it back, so buy it on specification rather than on the hope it suits you. Expect 4–5 years of nightly use at light body weight, considerably longer in a spare room. Rotate head-to-toe every couple of months.
Our verdict
The Westwood earns a 9.3 value score because it does the honest version of a cheap mattress: two properly differentiated foam layers, a quilted cover, UK manufacture and a 5-year warranty for £109. Judged as a spare-room or child's mattress it is the best money on the site. Judged as a primary bed for an adult it runs out of depth, and the absence of any trial period means you carry the risk if it does not suit you.
