Firmness
Medium
Type
Pocket Spring
Depth (cm)
29
Number of Layers
4
Trial Period (nights)
60
Warranty (years)
5
Price Range
£649 to £765
Best Sleeping Position(s)
Certifications
Assessed from Silentnight's published specification for this mattress, captured September 2026, and from regular price comparison across our UK retail partners.
Choose this one if you sleep hot or want to avoid foam. The wool layer is naturally temperature regulating, keeping you cool in summer and warmer in winter, and the wool is part of a traceable British scheme, which matters if provenance is on your list. Underneath, 1400 Mirapocket® springs adjust to your movements while 1000 mini pocket springs add comfort and airflow. Yes, £649 upwards is a real spend for a single or double, but you're paying for natural fillings and a proper dual spring system rather than marketing gloss. The 60-night trial gives you time to be sure, and delivery is quoted at 14 days.
Key Features & what's inside
- Tencel™ Lyocell sleep surface. A silky, soft-touch cover woven to allow airflow, which means moisture is drawn away from you as you sleep. It's a small detail that helps if you tend to wake up warm.
- Platinum comfort layer. Silentnight says this is 10x more breathable than memory foam with the same pressure relief. In practice, that means a cocooning feel without the heat build-up foam is known for.
- British Wool comfort layer. Wool from Cheviot sheep, flexible and breathable, keeping you cool in summer and warm in winter. It's also part of a traceable British wool scheme.
- Mirapocket® springs and mini pocket springs. 1400 Mirapocket® springs adjust to your movements through the night, so you get support where your body needs it. A further 1000 mini pocket springs sit alongside for extra comfort and breathability.
Layer details from silentnight.co.uk product page, September 2026.
Who's it NOT for?
If you love the slow, sinking feel of memory foam, this foam-free design will feel springier and more responsive than you're used to. Lightweight side sleepers may also find the medium/firm feel a little too solid at the shoulder and hip. And if you need a king or super king, only UK Single and UK Double are listed.
Silentnight British Wool 2400 Mattress
View all mattresses
How firm is the silentnight british wool 2400?
Silentnight rates it medium/firm. That places it on the supportive side, well suited to back sleepers and heavier side sleepers, though lighter side sleepers may find it slightly firm at the pressure points.
Does the silentnight british wool 2400 have a trial?
Yes, Silentnight offers a 60-night trial on this mattress, alongside a 5-year guarantee. Delivery is quoted at 14 days.
Is the silentnight british wool 2400 foam free?
Yes. It's foam free and uses natural flame retardants, with comfort coming from British wool, a breathable Platinum comfort layer and a Tencel™ Lyocell sleep surface instead of foam.
How many springs does the silentnight british wool 2400 have?
It has 2400 springs in total: 1400 Mirapocket® springs that adjust to your movements, plus 1000 mini pocket springs for additional comfort and breathability.
What sizes does the silentnight british wool 2400 come in?
It's available in UK Single and UK Double, with prices from £649 to £765. The mattress is 29cm deep, so deeper fitted sheets are a sensible buy.
Couldn't find an answer to your question? Send us a message