Harrison Spinks Winchester 13750 Super King Mattress
The Harrison Spinks Winchester 13750 is a soft, natural-filled pocket sprung mattress made by an NBF-approved British manufacturer.
- Soft, cushioned feel
- Support reacts quickly as you move
- Breathable fibres suit hot sleepers
£2,399
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Harrison Spinks Winchester 13750 Mattress
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Mattress details
Mattress
Harrison Spinks Winchester 13750 Mattress
Size
Firmness
Soft
Construction
Foam
Pocket Spring
Rolled
Wool
Depth (cm)
30
Layers
5
Layer Details
Cover
An in-house woven, natural and chemical-free cover made from breathable Belgian damask fabric. That breathability helps heat escape rather than build up at the surface.
Top comfort layer
Layers of white wool and mohair, responsibly sourced from the sheep and Angora goats at the Harrison Spinks Yorkshire farm. These fillings give a soft, cushioned feel while wicking moisture away as you sleep.
Viscose wool layer
A blend of viscose wool derived from the wood pulp of eucalyptus, beech and pine trees. It cradles you in comfort while enhancing ventilation throughout the mattress.
Spring core
Five separate layers of springs featuring Cortec Pocket Springs and Micro HD springs, designed to react quickly to movements and provide targeted support. You feel this as support that adjusts to your shape rather than a single flat surface.
Bottom comfort layer
More white wool and mohair from the same Yorkshire farm, mirroring the top layer. This adds a base of natural cushioning beneath the springs.
Layer details from mattressnextday.co.uk product page, September 2026.
Key benefits
- 90cm each, every night: Two people sharing get 90cm each, so a soft, cushioning surface stays yours rather than being negotiated across the middle.
- Distance handles restlessness: The five spring layers respond to small movements locally, and at this width a fidgety partner is simply too far away to matter much.
- Space when children appear: If little ones wander in during the night, 180cm of width means everyone keeps a workable share instead of someone retreating to the sofa.
- Breathable fillings across a big surface: Wool, mohair and the woven Belgian damask cover let heat escape, useful when three bodies, or a large dog, share the bed.
- Fills a large master properly: In a period property or generous new build master, a UK king can look undersized against the wall; the UK super king fills the space it was given.
This size suits you if...
You share the bed every night and want the most space a standard UK size offers, your partner shifts position often and you'd rather have distance than earplugs, or children and pets treat your bed as communal territory. Your bedroom should comfortably clear our suggested minimum of 3m x 2.9m, with more feeling better still.
Consider another size if...
Your bedroom is tight against our 3m x 2.9m suggestion, or getting a flat-delivered mattress this wide around your landing looks doubtful. We'd recommend the UK king instead: it's 30cm narrower, the same length, and we suggest at least 2.7m x 2.9m for it.
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FAQ's
Will the Winchester 13750 super king fit up my stairs?
This needs thought. The Winchester 13750 arrives flat rather than rolled in a box, and a 180 x 200cm mattress that's 30cm deep is a big object to manoeuvre. Measure your stairway width, any landing turns and the bedroom door swing before ordering, and check the retailer's delivery access guidance if anything looks marginal.
What room size do I need for the Winchester 13750 in a super king?
We suggest at least 3m x 2.9m, and a room closer to 3.5m x 3.2m feels right, giving you space to walk round both sides and open wardrobes without shuffling. If your room falls short of that, the UK king is 30cm narrower and the same length, and we suggest at least 2.7m x 2.9m for it.
Is the super king a good choice if my partner is restless?
It's arguably the best reason to buy one. The mattress itself helps, since its five layers of Cortec pocket springs and Micro HD springs react to movement locally rather than transferring it across the bed. But at this size the bigger factor is distance: with 90cm each for two people sharing, most disturbance simply doesn't reach you.
How much space do two people get on a super king Winchester 13750?
You get 90cm each for two people sharing, across a total width of 180cm, or 6ft x 6ft 6in overall. That's the same width as two UK singles side by side, so each of you effectively sleeps on your own single-sized patch of the mattress's soft wool and mohair comfort layers.
Where can I buy the Winchester 13750 in a UK super king?
Availability shifts, so the most reliable answer is the live comparison table on this page, which is updated as retailers change their prices and stock. Because this size arrives flat rather than boxed, it's also worth checking each retailer's delivery service, particularly if your bedroom is up narrow stairs or a tight landing turn.