Harrison Spinks Silver 6500 Pocket Mattress (Firmer Feel)
The Harrison Spinks Silver 6500 is a pocket spring mattress in a firm feel, with springs that move independently so a partner shifting in the night disturbs you less.
- Firm feel without sinking too far
- Deeper support under heavier hips
- Five sizes including Small Double
£849
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The Harrison Spinks Silver 6500 comes in five UK sizes, from Single up to Super King. It's listed with a 5 Year Guarantee. If you sleep on your back or front and like a supportive, firmer surface, this is the sort of specification to shortlist, although lightweight side sleepers may find a firm feel a little unforgiving.
Mattress specifications
Firmness
Firm
Type
Pocket Spring
Depth (cm)
Number of Layers
5
Trial Period (nights)
Warranty (years)
Price Range
£849 to £1,629
Best Sleeping Position(s)
Back Sleeping
Stomach Sleeping
Certifications
Assessed from the product page published by Mattress Online, captured September 2026, and from regular price comparison across our UK retail partners.
Why should you choose this mattress?
Choose this version if you specifically want a firmer feel: this listing is the Firmer Feel variant of the Silver 6500, suited to people who find softer mattresses leave them sinking too far. The pocket spring construction means each spring compresses on its own, so heavier areas like hips get deeper support while lighter areas are still held. Availability across five sizes, including Small Double and Super King, makes it easier to match an existing bed frame. It sits at the pricier end of the market, but Harrison Spinks is a long-established British maker and the retailer-listed 5 Year Guarantee adds some reassurance.
Key features & layer details
British wool & viscose blend
The top layer is a blend of British wool and viscose, with a cover that is free of FR chemical treatment. It gives you a natural-fibre surface to sleep on rather than a foam one.
British wool, hemp & flax blend
A layer of British wool, hemp and flax, included for breathability. It should help air move through the mattress, which is useful if you tend to run warm.
Cotton, hemp & flax blend
This layer is designed to wick away moisture and reduce mould and mildew. In practice, that helps keep the inside of the mattress fresher over time.
Pocket springs
Cortec Quad Revolution and Posturfil pocket springs, with mini and micro springs for contouring. The springs work independently, so the support follows the shape of your body.
Sustainable Ecotex base
The base layer is made from recycled fibres, which adds durability. It gives the natural layers above a firm foundation and suits you if recycled materials matter to you.
Layer details from mattressonline.co.uk and thebedshopedinburgh.co.uk product pages, October 2026.
Best suited for?
Back sleepers
The firmer feel gives a supportive surface, while pocket springs that compress independently hold the hips deeper and still support the lighter areas of your body.
Front sleepers
A firm surface keeps you from sinking in too far, and the pocket springs respond individually so heavier areas like the hips are supported.
Heavier sleepers
Each pocket spring compresses on its own, so heavier areas get deeper support, and the firmer feel resists the over-sinking that softer mattresses can cause.
Combination sleepers
A firm surface with individually moving pocket springs gives steady support whether you start on your back or front, without feeling like you are sinking in.
A firm mattress is rarely the right call for lightweight side sleepers, who may feel pressure at the shoulder and hip rather than sinking in comfortably. If you prefer a softer, more cradling surface, or the hug of memory foam, this pocket spring model probably is not for you. Budget buyers may also find the starting price a stretch.
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.
Harrison Spinks Silver 6500 Pocket Mattress (Firmer Feel)
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FAQ's
Is the Harrison Spinks Silver 6500 firm?
This listing is the Firmer Feel variant, catalogued as Firm. The retailer's page also mentions soft to medium and medium options of the Silver 6500, so check carefully which version you are ordering, as the listing does not always make the variant obvious.
What sizes does the Harrison Spinks Silver 6500 come in?
It is available in five UK sizes: Single, Small Double, Double, King and Super King.
Does the Harrison Spinks Silver 6500 have a guarantee?
The retailer listing shows a 5 Year Guarantee. That figure comes from the retailer rather than a manufacturer page, so it is sensible to confirm the guarantee terms with the retailer before you buy.
Is the Silver 6500 a pocket spring mattress?
Yes. It uses pocket springs, where each spring sits in its own fabric pocket and compresses independently. In practice that means better motion isolation for couples and support that adapts to your body shape rather than moving as one unit.
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