Firmness
Extra Firm
Type
Pocket Spring
Depth (cm)
Number of Layers
Trial Period (nights)
Warranty (years)
Price Range
£369 to £839
Best Sleeping Position(s)
Certifications
Assessed from mattress data provided by our UK retail partners, captured September 2026, and from regular price comparison across those retailers.
Choose this one if firmness is the point. Extra firm mattresses are a small slice of the market, and many buyers who need one end up compromising on something merely labelled firm. The pocket spring construction matters here too: rather than a rigid, board-like feel, the independent springs contour slightly to your body, which means firm support without every pressure point complaining. Starting at £369, it is a reasonably affordable route to a proper extra firm pocket sprung bed. The spread of eight sizes, including EU options, means most bed frames are catered for. Availability is limited, currently listed with just one retailer, so it may take a little more effort to find.
Key Features & what's inside
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Who's it NOT for?
Side sleepers, especially lighter ones, will likely find it too firm at the shoulder and hip, which can lead to pressure and numbness. If you prefer a plush, cushioned surface or a memory foam hug, look elsewhere. This is a deliberately extra firm mattress, and there is no softening that.
Spring King Backcare Ultimate 3000 Mattress
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How firm is the Spring King Backcare Ultimate 3000?
It is rated extra firm, the top end of the firmness scale. Expect a solid, supportive surface with minimal sink. That tends to suit back and front sleepers and heavier bodies, although lightweight side sleepers may find it uncomfortable at pressure points.
What sizes does the Backcare Ultimate 3000 come in?
Eight sizes: UK Single, Small Double, Double, King and Super King, plus EU Single, Double and King. The EU options are handy if you have a continental frame, as UK and EU dimensions differ.
How much does the Spring King Backcare Ultimate 3000 cost?
Prices range from £369 to £839 depending on the size you choose, with the smallest sizes starting at £369. That is a fairly modest price for an extra firm pocket spring mattress.
Is the Backcare Ultimate 3000 a pocket spring mattress?
Yes. Pocket springs are individually wrapped in fabric pockets, which means each one responds to your body separately. In practice you get firm support that still follows your shape, and less motion transfer to a partner than a traditional open coil design.
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