Silentnight Pocket Essentials 1000 Memory King Size Mattress
The Silentnight Pocket Essentials 1000 Memory Mattress is a hybrid that pairs a memory foam comfort layer with Silentnight's Mirapocket spring system, which means you get pressure relief on top and zoned support underneath.
- Eases pressure at hips & shoulders
- Minimises partner disturbance
- 60-night trial & 5-year guarantee
£400.75
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Silentnight Pocket Essentials 1000 Memory Mattress
More available sizes
Last seen for £389 at Mattress Man on 20th October 2026
Mattress details
Mattress
Silentnight Pocket Essentials 1000 Memory Mattress
Size
Firmness
Medium Firm
Construction
Foam
Pocket Spring
Hybrid
Memory Foam
Depth (cm)
25
Layers
2
Layer Details
Memory Foam Comfort Layer
A responsive memory foam that gently moulds to your body's contours, which means it absorbs energy and eases built-up pressure at the hips and shoulders. You'll feel a slight cradling on the surface rather than a deep sink.
Mirapocket Spring Support System
1000 individually nested pocket springs (based on the king size, with the count varying pro-rata for other sizes) react independently to your body weight and movement. Silentnight states the zoned support is scientifically proven to help spinal alignment and posture.
Layer details from silentnight.co.uk product page, September 2026.
Key benefits
- The full spring count: Silentnight counts the 1000 Mirapocket springs on the king size itself, so this is the one size where you get exactly what the name promises.
- 75cm of width each: Two sharers each get 75cm, which means less accidental contact in the night and more room to change position without a nudge.
- Less partner disturbance: Individually nested springs respond to each body separately, so one of you leaving for an early shift causes less ripple across the bed.
- Extra length for taller sleepers: At 200cm, the UK king is 10cm longer than the UK double, a genuine relief if either of you is approaching six foot.
- Easy to dress: Standard king fitted sheets suit the 25cm depth without any fuss, so there's no hunting for deep-pocket bedding.
This size suits you if...
You share the bed every night and a double has started to feel cramped, especially if one of you keeps different hours and you'd rather not feel every movement. It also makes sense if either partner is tall, since the 200cm length gives feet somewhere to go, or if pregnancy or recovery means you're shifting position and propping pillows more than usual.
Consider another size if...
Your bedroom won't comfortably take a bed this size, or you sleep alone. For tighter rooms we'd recommend the UK double instead, which needs around 2.6m x 2.8m; solo sleepers may find the UK single or UK small double more sensible.
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FAQ's
Does the UK king version have the full 1000 springs?
Yes. Silentnight counts the Mirapocket springs on the king size, with other sizes carrying a pro-rata number. So in the UK king you get all 1000 individually nested springs, each reacting separately to weight and movement, which is part of why this size handles two sleepers on different schedules well.
What room size do I need for this mattress in a UK king?
We suggest a minimum of 2.7m x 2.9m, with around 3.2m x 3.2m feeling properly comfortable once wardrobes and bedside tables are in. New build master bedrooms can be tighter than they look on a floor plan, so measure with the furniture in place before ordering.
Is the UK king long enough for someone over six foot?
At 200cm, or 6ft 6in, it gives a sleeper around the six foot mark roughly a foot of clearance. That's 10cm more length than the UK double, and for many taller buyers the length is the real reason to upgrade, with the extra width a welcome bonus.
Should a couple choose the UK double or the UK king?
If the room allows, the UK king. It's 15cm wider and 10cm longer than the UK double, and with 75cm each you'll feel the pocket springs isolating movement rather than transferring it. Stick with the UK double only if your room is under our suggested 2.7m x 2.9m minimum.
Where can I buy the Silentnight Pocket Essentials 1000 in a UK king?
Compare the retailers listed on this page. The prices shown are updated as retailers change them, so it's worth checking back if you're not buying today, since stock and pricing on the UK king can move independently of the other sizes.