Firmness
Type
Pocket Spring
Depth (cm)
36
Number of Layers
8
Trial Period (nights)
Warranty (years)
10
Price Range
£2,699
Best Sleeping Position(s)
Certifications
Assessed from the specification published by MattressNextDay, captured September 2026, and from regular price comparison across our UK retail partners.
Choose it for the fillings. Silk sits at the top, followed by cashmere, Swaledale and golden fleece wools, then a cotton, hemp and flax blend grown on Harrison Spinks' own Yorkshire farm, which means natural breathability rather than synthetic foams doing the temperature work. Every filling layer is duplicated on both sides of the spring unit, so the mattress is fully flippable, something that should extend its useful life. The cover is free of FR chemical treatments, and the brand holds an Authentic Traceable British Wool Award alongside NBF-Approved Manufacturer status. It comes with a 10-year manufacturer guarantee. Yes, £2,699 is a lot, but the materials and double-sided build go some way to justifying it.
Key Features & what's inside
- Top comfort layer. Silk forms the uppermost comfort layer. It's soft in texture and light in weight, which means a gentle, smooth surface directly beneath you.
- Natural fillings blend. Cashmere, a rare filling that's softer and finer than wool, adds a second layer of plush comfort. It's the sort of material usually reserved for high-end products.
- Natural fillings blend. Swaledale, golden fleece, rare breed and indigenous wools provide natural cushioning. Wool also helps regulate temperature, so you're less likely to overheat.
- Natural fillings blend. A further blend of cashmere, Yorkshire wool, silk and British wool cradles the body. This deepens the soft, enveloping feel the mattress is built around.
- Natural fillings blend. Cotton, hemp and flax, harvested from Harrison Spinks' own Yorkshire farm, keep the sleep surface feeling fresh. Growing fillings on their own land is unusual in the industry.
- Spring system. Up to 3,000 specialist Cortec Quad Springs with glue-free construction work alongside HD 3,000 Micro and triple layers of HD 4,000 Micro Springs. Layered micro springs respond to smaller movements, which means more precise, contouring support.
- Natural fillings blend (duplicate). All fillings are duplicated on the other side of the Cortec spring unit, making this a genuinely double-sided, flippable mattress. Regular flipping spreads the wear and can extend its lifespan.
- Cover. A wool viscose cover finishes the mattress, free of FR chemical treatments. That keeps the sleep surface breathable and refreshing.
Layer details from mattressnextday.co.uk product page, September 2026.
Who's it NOT for?
This is a soft mattress, so it won't suit anyone who needs a firmer surface, and heavier sleepers or dedicated front sleepers may find it too yielding. It's also a poor fit for tight budgets at £2,699, and only a UK King size is listed. Being flippable, it needs turning, which some will find a chore at 36cm deep.
Harrison Spinks Pearl 30000 Anniversary Mattress
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Is the Harrison Spinks Pearl 30000 soft or firm?
It's described as soft. Silk, cashmere and layered British wools sit over the springs, giving a plush, cradling feel that suits side sleepers and those who like sinking in a little, although anyone wanting firm support should look elsewhere.
Does the Harrison Spinks Pearl 30000 need to be flipped?
Yes, it's a double-sided mattress with all fillings duplicated on either side of the Cortec spring unit, so it's designed to be flipped. That's some effort with a 36cm-deep mattress, but it helps the fillings wear evenly.
How many springs does the Pearl 30000 mattress have?
The retailer listing at MattressNextDay names 30,000 pocket springs in its specifications, while the description on the same page refers to up to 3,000 specialist Cortec Quad Springs working with HD 3,000 Micro and triple layers of HD 4,000 Micro Springs. Both figures appear on that page.
What guarantee comes with the Harrison Spinks Pearl 30000?
The product description on MattressNextDay states a 10-year manufacturer guarantee. Delivery terms listed there, including free next day delivery, are that retailer's own offer rather than a Harrison Spinks promise, so check terms wherever you buy.
Is the Pearl 30000 delivered rolled in a box?
No. It arrives flat, as a traditional hand-built mattress with natural fillings can't be compressed and rolled. MattressNextDay lists free next day delivery, though that's the retailer's own offer and may differ elsewhere.
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