Harrison Spinks Winchester 13750 King Size 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
£1,929
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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
- 75cm of space each: Two people sharing get 75cm each, which means you can settle into the soft wool and mohair layers without negotiating territory all night.
- Less partner disturbance: Five layers of pocket springs respond to small, local movements, so at king width one partner getting up early is far less likely to wake the other.
- Extra length for taller sleepers: At 200cm, the UK king is 10cm longer than the UK double, a real difference if either of you is approaching six foot.
- Breathable across a wider surface: Wool, mohair and a breathable Belgian damask cover keep temperature stable, useful when two bodies share one mattress every night.
- Flat delivery, so measure the route: This mattress arrives flat rather than rolled, and a 150 x 200cm piece needs a clear path through hallways, stairs and door frames.
- Room fit is manageable: We suggest at least 2.7m x 2.9m for a UK king, achievable in most master bedrooms without giving up wardrobe space.
This size suits you if...
You share the bed every night and want more personal space than a UK double offers, especially if one of you keeps different hours to the other. It also suits couples where one partner is over six foot, since the 200cm length removes the feet-off-the-end problem, or anyone who likes a soft, natural-filled feel and has the room to take a 150cm-wide mattress.
Consider another size if...
Your bedroom falls short of the 2.7m x 2.9m we suggest for a UK king. The UK double would suit you better, at 15cm narrower, and we suggest at least 2.6m x 2.8m for that size.
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FAQ's
Is a UK king Winchester 13750 big enough for a couple?
Yes, comfortably for most. You get 75cm each for two people sharing, and because the Winchester 13750 uses five layers of pocket springs rather than one uniform surface, each sleeper is supported independently across that width. Lightweight couples happy with a soft feel will find it generous; a very restless pair might still prefer sizing up to the UK super king.
Will the king size reduce disturbance from my partner moving?
It helps on two fronts. The Cortec pocket springs and Micro HD springs react to movement locally, so motion is less likely to travel across the mattress, and the UK king's 150cm width, 15cm more than a UK double, puts extra distance between you. If one of you leaves for work hours before the other, that combination makes early exits quieter.
Is the UK king long enough for a tall sleeper?
At 200cm, or 6ft 6in, it gives you 10cm more length than a UK double. For anyone around six foot that changes the feel of the bed entirely, since your feet stay on the mattress rather than hanging near the edge. If height is your main reason for upgrading, the UK king delivers it without demanding a bigger room than most masters can offer.
Can the Winchester 13750 king be delivered to an awkward room?
It needs planning. This mattress arrives flat rather than rolled and boxed, so the full 150 x 200cm has to make it up your stairs and around your landing in one piece. In a new build with tight turns, measure the route before ordering. If access is genuinely restrictive, the UK double, 15cm narrower, may be easier to manoeuvre.
What room size do I need for this king mattress?
We suggest at least 2.7m x 2.9m, which leaves walking space on both sides and room for bedside tables. That's our guidance rather than the manufacturer's. If your room is larger, around 3.2m x 3.2m feels comfortable. If it's smaller, we'd recommend the UK double instead, where we suggest at least 2.6m x 2.8m.