Firmness
Extra Firm
Type
Hybrid
Depth (cm)
25
Number of Layers
2
Trial Period (nights)
60
Warranty (years)
5
Price Range
£480 to £765
Best Sleeping Position(s)
Certifications
Assessed from Silentnight's published specification for this mattress, captured September 2026, and from regular price comparison across our UK retail partners.
This mattress makes sense if you want the moulding comfort of memory foam without the flat, sunken feel an all-foam mattress can have. The 1400 pocket springs respond independently to your movement, which means less disturbance from a restless partner and better spinal alignment across the night. The firm feel will appeal to back and front sleepers, and to anyone who has found softer mattresses leave them aching. Yes, £480 to £765 is a real spend, but you are getting a hybrid build, a 60-night trial and a 5-year guarantee behind it. Delivery is quoted at 14 days, so it is not a next-day purchase.
Key Features & what's inside
- Memory Foam. The top layer moulds to your body as you settle in, which means pressure is eased away from your muscles and joints. You should feel gently cradled rather than pushed back against.
- Mirapocket springs. Beneath the foam sit 1400 Mirapocket springs that respond independently to your every movement. In practice, that means support where you need it and better spinal alignment, with less motion carrying across the bed.
Layer details from silentnight.co.uk product page, September 2026.
Who's it NOT for?
If you sleep on your side and are on the lighter side, the firm feel may put a little too much pressure on your shoulders and hips. Hot sleepers should also weigh up the memory foam layer, which can hold warmth more than a purely sprung surface.
Silentnight Memory 1400 Mattress
How firm is the Silentnight Memory 1400 mattress?
Silentnight rates it as firm on its own product page. That means a supportive, stable surface with the memory foam adding a softer top layer, rather than a mattress you sink deeply into. Back and front sleepers, and those who prefer a firmer feel, will get on with it best.
Does the Silentnight Memory 1400 come with a trial and guarantee?
Yes. Silentnight offers a 60-night trial and a 5-year guarantee, so you have a couple of months to decide whether the firm feel suits you. Delivery is quoted at 14 days.
How many springs does the Silentnight Memory 1400 have?
It contains 1400 Mirapocket springs. Each spring moves independently, which means the mattress responds to your shape and movement rather than the bed shifting as a whole, and your partner is less likely to feel you turn over.
How deep is the Silentnight Memory 1400 mattress?
It is 25cm deep, a fairly standard depth that should fit most fitted sheets without a struggle. That depth covers the memory foam comfort layer and the pocket spring unit beneath it.
What sizes does the Silentnight Memory 1400 come in?
Five UK sizes: Single, Small Double, Double, King and Super King. Prices run from £480 to £765 depending on the size you choose.
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