Silentnight British Wool 1800 Mattress
Mattress
Silentnight British Wool 1800 Mattress
Size
Firmness
Medium
Construction
Depth (cm)
29
Layers
4
Layer Details
- Breathable Tencel™ Lyocell sleep surface. A silky, soft-touch material woven to allow airflow and move moisture away from you as you sleep. The result is a naturally cool feel when you first lie down.
- British Wool Comfort Layer. Wool sourced from Cheviot sheep, chosen because it's flexible and breathable. It helps keep you cool in summer and warm in winter, which means fewer temperature-related wake-ups year round.
- Platinum comfort layer. Silentnight says this layer is 10x more breathable than memory foam while offering the same pressure relief. In practice that means a cocooning, cushioned feel without the heat build-up memory foam is known for.
- 800 Mirapocket® springs plus 1000 mini springs. The 800 Mirapocket® springs adjust to your movements through the night, giving tailored support that follows your body shape. The 1000 mini pocket springs sit alongside for extra comfort and increased breathability.
Layer details from silentnight.co.uk product page, September 2026.
- Fits compact rooms: At 90cm wide, it leaves room for a desk and wardrobe in a child's bedroom, or a work setup in a spare room that doubles as an office.
- Natural fillings for a child or teen: The wool comfort layer and Tencel™ surface regulate temperature naturally, which means fewer sweaty wake-ups for a growing sleeper who runs warm.
- 1800 springs under one person: With 800 Mirapocket® springs and 1000 mini springs supporting a single sleeper, the mattress follows one body shape without anyone else's movement to absorb.
- Cheap, easy bedding: Standard single sheets and a single duvet fit, and they're the most widely stocked and affordable bedding of any UK size.
- Loft rooms and awkward spaces: The narrow 90cm footprint tucks under a sloped ceiling or into a box room where anything wider would block the door or the walkway.
This size suits you if...
You're buying for one person: a child ready for a full-size bed, a teenager, a student kitting out a first flat where the frame came with the room, or a spare bedroom that needs to sleep the occasional guest. It also suits you if the room is tight, since 90cm of width keeps floor space free for storage, a desk or a second bed for siblings sharing.
Consider another size if...
Two of you will share the bed, or you're a single adult who likes to sprawl. Silentnight lists this mattress in a UK single only, so a couple will need a different mattress rather than a bigger size of this one.
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What size is the Silentnight British Wool 1800 UK single?
It measures 90 x 190cm, which is 3ft x 6ft 3in, the standard UK single. That's the default size for children's beds, teenagers' rooms and guest beds. We suggest allowing at least 2.1m x 2.8m of floor space so there's room to walk round the bed and open drawers or wardrobe doors.
Does the Silentnight British Wool 1800 come in sizes bigger than a UK single?
No, the UK single is currently the only size listed for this mattress. If you need more width, for comparison the UK single is 30cm narrower than the UK small double and 45cm narrower than the UK double, but you'd be choosing a different mattress in those sizes, not this one.
Is the Silentnight British Wool 1800 single good for a child's room?
Yes, it's a natural fit. The 90cm width leaves space for toy storage, a wardrobe and a desk in a typical child's bedroom, and the foam-free, wool-based build breathes well, which helps children who overheat at night. The medium feel suits most sleepers, though a very light child will sit more on top of it than in it.
Will a UK single fit in a spare room that's also an office?
Usually, yes. At 90 x 190cm it's the easiest size to work around: allow at least 2.1m x 2.8m of floor space and you should still have room for a desk along one wall. If guests visit in pairs, two UK singles are often more flexible than one double, though the room needs a walkway between them.
What bedding do I need for this mattress in a UK single?
Standard UK single fitted sheets and a single duvet, which measures 135 x 200cm, fit this mattress. Single bedding is the cheapest and most widely available of any size, a small but real saving over the life of the mattress, especially for a child's bed where sheets get washed often.