Silentnight British Wool 1600 Super King Mattress
The Silentnight British Wool 1600 is a medium-feel pocket spring mattress with a foam free build.
- Wool & Tencel keep you cool & dry
- Pressure relief like memory foam
- 60-night trial & 5-year guarantee
£1,109
Get the lowest price we've found
Save with the previous model
Some retailers still sell the earlier version of this mattress for less than the current model's best price.
Silentnight British Wool 1600 Mattress
More available sizes
Mattress details
Mattress
Silentnight British Wool 1600 Mattress
Size
Firmness
Medium
Construction
Foam
Pocket Spring
Wool
Memory Foam
Natural
Depth (cm)
29
Layers
4
Layer Details
Tencel™ Lyocell sleep surface
A silky, soft-touch top layer woven to allow airflow and move moisture away from you, which means you're less likely to wake up clammy. It's the first thing you'll feel through your bedding.
Platinum comfort layer
Silentnight says this is 10x more breathable than memory foam with the same level of pressure relief. In practice that means a cocooning, cushioned feel without the warmth foam can trap.
British Wool Comfort Layer
Wool from Cheviot sheep, flexible and breathable, helping regulate temperature so you stay cool in summer and warm in winter. It's a natural material doing a job synthetic layers often struggle with.
Mirapocket® springs and mini pocket springs
600 Mirapocket® springs work with 1000 mini pocket springs, which means each spring responds to your body independently for tailored support. The dual layer also increases breathability through the core of the mattress.
Layer details from silentnight.co.uk product page, September 2026.
Key benefits
- Space beats any comfort layer: With 90cm each for two people sharing, a fidgeting partner is simply further away, which does more for unbroken sleep than any mattress material can.
- Independent springs across a wide surface: The 600 Mirapocket® springs and 1000 mini pocket springs respond to each body separately, so movement on one side of a 180cm mattress travels less to the other.
- Room for the whole household: When children arrive at 3am or the dog claims a corner, the extra 30cm over a UK king means everyone still gets a share.
- Breathable for two warm bodies: Two sleepers generate more heat than one, and the wool layers and Tencel™ Lyocell surface move that warmth and moisture away rather than trapping it.
- Foam free at family scale: The springy, responsive feel makes shifting position easy, useful when you're settling a child back to sleep without waking your partner.
This size suits you if...
You share the bed every night and want the most space a standard UK size offers, your partner is genuinely restless and distance matters more to you than any comfort feature, or children and pets treat your bed as theirs too. Your bedroom should measure at least 3m x 2.9m by our guidance, and closer to 3.5m x 3.2m will feel comfortable rather than crowded.
Consider another size if...
Your room is under our suggested 3m x 2.9m minimum, or you sleep alone. This mattress isn't made in a UK king, so we'd recommend the UK double instead, which needs at least 2.6m x 2.8m.
Similar Mattresses in This Price Range
Did you know? On Mattress Unboxed we have over 1,000 different mattresses to suit all types of sleepers. View all mattresses.
FAQ's
Is there a UK king size of the Silentnight British Wool 1600?
No. Silentnight makes this mattress in single, double and super king only, so if you wanted a UK king your choice is between the UK double and the UK super king. The UK super king is 30cm wider than the UK king and the same length, so where the room allows it, sizing up is the better direction.
How much space do two people get on a super king Silentnight British Wool 1600?
90cm each for two people sharing, which is the width of a whole single mattress per person. Combined with the independent pocket springs, that means a partner turning over happens at a distance, on springs that aren't the ones supporting you. For light sleepers, that separation matters more than any comfort layer.
What room size do I need for this mattress in a super king?
We suggest at least 3m x 2.9m as a minimum, and around 3.5m x 3.2m if you want bedside tables on both sides and space to move around the bed comfortably. That's our own guidance rather than Silentnight's. If your room falls short, the UK double needs at least 2.6m x 2.8m.
Is the super king good for sharing with children or pets?
It's the size we'd point families to. At 6ft x 6ft 6in there's genuine room for a child who wanders in at night, or a large dog who considers the bed part of the routine, without either adult ending up clinging to an edge. The breathable wool build also copes better with extra warm bodies than foam would.
Will I feel my partner moving on this mattress?
Less than on a smaller size. The 600 Mirapocket® springs and 1000 mini pocket springs each compress independently, so movement is localised rather than travelling across the mattress, and the 180cm width puts physical distance between you as well. A very restless sleeper will never be completely undetectable, but the combination makes disturbance easy to sleep through.