Firmness
Firm
Type
Pocket Spring
Depth (cm)
Number of Layers
Trial Period (nights)
Warranty (years)
Price Range
£1,049 to £1,949
Best Sleeping Position(s)
Certifications
Assessed from the product page published by Mattress Online, captured September 2026, and from regular price comparison across our UK retail partners.
A firm pocket spring mattress tends to suit back and front sleepers, and heavier sleepers who find softer mattresses let them sink too far. Pocket springs move independently, which means less of your partner's tossing and turning reaches your side of the bed than with an open coil design. Harrison Spinks is a long-established British maker, and the £1,049 starting price reflects that positioning rather than budget territory. If you know you want a properly firm feel and are prepared to pay for pocket spring construction, this is the sort of mattress to shortlist. Do check carefully at checkout that you are ordering the Firmer Feel version, as the Jade 10000 comes in several firmness options.
Key Features & what's inside
Awaiting up to date specifications. Please check back later.
Who's it NOT for?
Lightweight side sleepers will probably find a firm mattress a little too unyielding at the shoulder and hip, which can mean pressure points rather than support. It is also a stretch for tighter budgets, with prices starting at £1,049. If you prefer a cradling, sink-in feel, look at the softer variants of this model instead.
Harrison Spinks Jade 10000 Pocket Mattress (Firmer Feel)
How firm is the Harrison Spinks Jade 10000 Firmer Feel?
This version is rated firm, which means a supportive, on-top-of-the-mattress feel with limited sink. The Jade 10000 is sold in more than one firmness option, so confirm you are buying the Firmer Feel variant if that is the feel you want.
What sizes does the Harrison Spinks Jade 10000 come in?
It is available in five UK sizes: Single, Small Double, Double, King and Super King. Prices range from £1,049 to £1,949 depending on the size you choose.
Does the Harrison Spinks Jade 10000 come with a guarantee?
The retailer listing for this mattress states a 5 year guarantee. As that term comes from the retailer's page rather than the manufacturer directly, it is sensible to confirm the guarantee details with the retailer before you order.
Is the Harrison Spinks Jade 10000 a pocket spring mattress?
Yes, it is a pocket spring mattress. Pocket springs move independently of one another, which means the mattress responds to your body shape and transfers less movement across the bed, a genuine help if you share with a restless partner.
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