Silentnight UltraGel 3000 Pocket Firm Mattress
The Silentnight UltraGel 3000 Pocket Firm is a hybrid mattress, which means it pairs pocket springs with a comfort layer rather than relying on foam alone.
- Firm support for back & front sleepers
- Minimises partner disturbance
- Springs contour to your shape
£617.29
Get the lowest price we've found
The Silentnight UltraGel 3000 Pocket Firm is listed as firm, so it offers a solid, supportive feel that suits back and front sleepers more than lightweight side sleepers. It comes in five UK sizes, from Single up to Super King. It's at the pricier end for a Silentnight, but you're paying for a pocket sprung hybrid build. Silentnight sells this model with a choice of firmness levels, so check you're ordering the Firm version if that's the feel you want.
Mattress specifications
Firmness
Firm
Type
Hybrid
Depth (cm)
Number of Layers
3
Trial Period (nights)
Warranty (years)
Price Range
£617 to £1,115
Best Sleeping Position(s)
Back Sleeping
Stomach Sleeping
Certifications
Assessed from Silentnight's product page, captured September 2026, and from regular price comparison across our UK retail partners.
Why should you choose this mattress?
Choose this mattress if you sleep on your back or front and want a firm, stable surface. As a hybrid with pocket springs, each spring moves independently, which means better contouring to your shape and less motion transfer than an open coil design. If you share a bed, that matters: your partner's movements are less likely to wake you. The size range is generous, covering UK Single, Small Double, Double, King and Super King, so it works for a spare room or a main bedroom. Yes, the starting price is a real spend, but firm hybrids from established brands tend to sit in the mid-range bracket.
Key features & layer details
UltraGel comfort layer
A gel-infused comfort layer that Silentnight describes as responding to movement and easing pressure. For you, that means a surface that adjusts as you shift, with some cushioning on top of a firm feel.
Foam layer
A foam layer that Silentnight calls its most breathable foam yet, used together with the gel-infused layer above it. That should help the top of the mattress feel less stuffy as you sleep.
Boxtop
A boxtop that adds a softer, more cushioned finish and works with the springs below to give zoned support. You get a little comfort at the surface, while the firm feel underneath keeps you supported.
Layer details from silentnight.co.uk and mattressonline.co.uk product pages, October 2026.
Best suited for?
Back sleepers
The firm feel gives a solid, stable surface under your back, which means you stay supported rather than sinking in.
Front sleepers
Firm tension keeps your hips from dropping too deep into the mattress, so lying on your front feels level and supported.
Couples
Pocket springs move independently, which means less motion transfer than open coils, so your partner's movements are less likely to wake you.
Guest rooms
Five UK sizes from Single to Super King mean you can fit it to a spare room of almost any size.
If you're a lightweight side sleeper, a firm mattress may feel too unyielding at the shoulder and hip, so a medium tension would likely suit you better. It's also a stretch for tight budgets, given the starting price. And if you prefer the deep sink of an all-foam bed, this sprung hybrid will feel different.
Save on an earlier or ex-display model
Some retailers still sell the earlier version of this mattress, or ex-display and returned stock at a lower price. These are the sizes where it costs less than the current model's best price.
Silentnight UltraGel 3000 Pocket Firm Mattress
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FAQ's
Is the Silentnight UltraGel 3000 Pocket mattress firm?
This version is listed as firm. Silentnight also offers the UltraGel 3000 Pocket in a Medium/Soft option, with firmness selectable when you order, so double-check you've chosen the right tension before buying.
How much does the Silentnight UltraGel 3000 Pocket Firm cost?
It depends on the size you choose, and the price table on this page shows the current price for each size.
What sizes does the Silentnight UltraGel 3000 Pocket Firm come in?
It's available in five UK sizes: Single, Small Double, Double, King and Super King.
Is the Silentnight UltraGel 3000 Pocket a hybrid mattress?
Yes. It's a hybrid, combining pocket springs with a comfort layer, which means you get the responsive support of springs alongside surface cushioning.
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