Silentnight Memory 1400 Mattress
The Silentnight Memory 1400 is a hybrid mattress that pairs a memory foam comfort layer with 1400 Mirapocket springs, which means you get pressure relief on top and responsive support underneath.
- Extra-firm for back & front sleepers
- Memory foam without the sunken feel
- 60-night trial & 5-year guarantee
£419
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The Silentnight Memory 1400 is described by Silentnight as firm, so it suits sleepers who like a supportive, stable feel rather than a soft sink. At 25cm deep, it sits at a sensible mid-market level, and it comes with a 60-night trial and 5-year guarantee from Silentnight. It is available in five UK sizes, from Single up to Super King.
Mattress specifications
Firmness
Extra Firm
Type
Hybrid
Depth (cm)
25
Number of Layers
2
Trial Period (nights)
60
Warranty (years)
5
Price Range
£394 to £744
Best Sleeping Position(s)
Stomach Sleeping
Certifications
Assessed from Silentnight's published specification for this mattress, captured September 2026, and from regular price comparison across our UK retail partners.
Why should you choose this mattress?
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, it 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 & layer details
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.
Best suited for?
Back sleepers
The firm feel and 1400 pocket springs give steady support under the spine, which means your back stays level rather than sinking into the mattress.
Front sleepers
Extra firm support stops your hips dropping too far into the bed, which means a flatter, more comfortable position when lying on your front.
Couples
Each of the 1400 Mirapocket springs responds independently, which means you feel less movement when a restless partner turns over during the night.
Heavier sleepers
A 25cm build with a firm pocket spring base under the memory foam should resist sinking, which means you get stable support across the night.
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.
Save on an earlier or ex-display model
Some retailers still sell the earlier version of this mattress, or ex-display and returned stock at a lower price. These are the sizes where it costs less than the current model's best price.
Silentnight Memory 1400 Mattress
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FAQ's
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.
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