Silentnight Pocket Essentials 800 Memory Mattress
Mattress
Silentnight Pocket Essentials 800 Memory Mattress
Size
Firmness
Medium Firm
Construction
Depth (cm)
24
Layers
2
Layer Details
- Memory foam. This top layer gently moulds to the contours of your body, which means pressure points at your hips and shoulders get some relief. It provides that cushioned, hugging comfort memory foam is known for.
- Mirapocket springs. Beneath the foam, 800 Mirapocket springs respond independently to your body's movements. This gives zoned support and improved spinal alignment, so your back stays in a healthier position through the night.
Layer details from silentnight.co.uk product page, September 2026.
- Room to sleep apart, together: At 75cm each for two people sharing, you can both settle into your own space rather than negotiating the middle of the bed.
- Springs that keep the peace: The 800 Mirapocket springs respond to each sleeper separately, which means an early alarm on one side transmits less movement to the other.
- Memory foam without the wallow: The memory foam top cushions hips and shoulders while the springs beneath keep the surface responsive, a balance that suits a shared bed.
- Length for taller sleepers: At 200cm, the UK king is 10cm longer than the UK double, a genuine relief if one of you regularly finds feet at the edge.
- A medium firm middle ground: The medium firm feel gives couples with different preferences a surface neither is likely to find too soft or too hard.
This size suits you if...
You share the bed every night and a double has started to feel cramped, or one of you sleeps restlessly and the other keeps noticing. It also makes sense if either partner is approaching six foot, since the 200cm length stops feet hanging off the end, or if a dog has quietly become a permanent third occupant taking more than its share.
Consider another size if...
Your bedroom falls short of the 2.7m x 2.9m we suggest for a UK king, which is easier to hit than a new build master often allows once wardrobes go in. We'd recommend the UK double instead, which needs at least 2.6m x 2.8m.
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Is a UK king Silentnight Pocket Essentials 800 big enough for a couple?
Yes, comfortably for most. At 150 x 200cm you get 75cm each for two people sharing, and the 800 Mirapocket springs respond independently on each side, so a restless partner disturbs you less. If you want even more personal space, this mattress also comes in a UK super king.
Will the king size help if my partner gets up earlier than me?
It helps in two ways. The width means their side of the bed is properly their side, and the pocket springs absorb movement locally rather than sending it across the mattress. Memory foam on top also dampens motion a little, so an early start on one side is less likely to reach you.
Is the UK king long enough for someone over six foot?
At 200cm, the UK king gives a tall sleeper 10cm more length than the UK double. For anyone around the six foot mark that is usually the difference between feet on the mattress and feet over the edge. If length is your main reason for upgrading, the UK king delivers it without the extra width demands of the UK super king.
What room size do I need for this mattress in a UK king?
We suggest at least 2.7m x 2.9m, which leaves enough space to walk round the bed and open drawers. New build master bedrooms can be tighter than they look once fitted wardrobes are in, so measure the usable floor rather than the room. If it won't fit, the UK double needs at least 2.6m x 2.8m.
Where can I buy the Silentnight Pocket Essentials 800 in a UK king?
Availability shifts, so the most reliable answer is the live comparison on this page. The prices shown here are updated as retailers change them, which makes it easy to check who currently stocks the UK king and at what price before you commit.