Harrison Spinks Alwoodley 9750 Pocket Mattress
Mattress
Harrison Spinks Alwoodley 9750 Pocket Mattress
Size
Firmness
Medium Firm
Construction
Pocket Spring
Wool
Depth (cm)
29
Layers
3
Layer Details
- Comfort Layer. 100% Yorkshire wool blended with silky-smooth mohair, chosen for its springy, soft and resilient qualities. In practice that means a comfortable surface that recovers its shape rather than developing dips quickly.
- Additional Comfort Fillings. Fine cotton, flax and hemp fibres that are naturally breathable and wick away moisture. You should feel noticeably cooler through the night than on a foam-heavy mattress.
- Support System. Over 9,000 individual pocket springs encased in breathable fabric, each reacting independently. This gives tailor-made support and pressure relief, with less motion transfer if you share the bed.
Layer details from mattressonline.co.uk product page, September 2026.
- 90cm each for two sharing: You each get 90cm of width, which means a restless partner can turn over all night without pulling you awake with them.
- Distance plus independent springs: Over 9,000 pocket springs already limit motion transfer, and 30cm more width than the UK king puts extra space between you and any movement that remains.
- Room for occasional visitors: When a child appears at 3am or the dog claims a corner, there's still a fair share of mattress left for the adults.
- Natural fillings across a bigger surface: Yorkshire wool, mohair, cotton, flax and hemp breathe and wick moisture, useful when three or four warm bodies end up on one mattress.
- Same length as the UK king: At 200cm long it matches the UK king for legroom, so taller sleepers lose nothing by choosing either; the difference is purely width.
This size suits you if...
You share the bed every night and want the most sleeping space a standard UK size offers, your partner is genuinely restless and distance matters more to you than any comfort layer, or children and pets regularly join you and you'd rather plan for it than perch on the edge. Your bedroom should measure at least 3m x 2.9m, with around 3.5m x 3.2m feeling more comfortable.
Consider another size if...
Your room is under our suggested 3m x 2.9m minimum, or a bed this wide would dominate the space. We'd recommend the UK king instead: it's 30cm narrower, the same 200cm length, and we suggest at least 2.7m x 2.9m for it.
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How much space does each person get on the Alwoodley 9750 super king?
Two people sharing the UK super king get 90cm of width each, the same as a UK single apiece. Combined with the mattress's independently moving pocket springs, that means one sleeper turning over is far less likely to disturb the other, which is the main reason couples size up to this width.
Will the Harrison Spinks Alwoodley 9750 super king fit in my bedroom?
The mattress measures 180 x 200cm, and we suggest a room of at least 3m x 2.9m, with around 3.5m x 3.2m feeling right if you want bedside tables and easy walking space on both sides. Check door swing and any landing turns too, since a mattress this size is awkward on tight stairs.
Is the UK super king worth it over the UK king for this mattress?
The UK super king is 30cm wider than the UK king; both are 200cm long. If your partner is restless, or children and pets share the bed, that extra width does more for your sleep than any change of comfort layer would. In a smaller room, though, the UK king leaves the space far more usable.
Is the Alwoodley 9750 super king good for families sharing the bed?
It's the size built for that situation. With 180cm of width, a child climbing in during the night still leaves both adults a workable share of mattress, and the wool, cotton, flax and hemp fillings breathe well when extra bodies raise the temperature under the duvet. A slightly larger room helps everyone get in and out easily.
What bedding do I need for this mattress in a super king?
You'll need super king fitted sheets sized for 180 x 200cm, and since the Alwoodley 9750 is 29cm deep, check the sheet's depth before buying rather than assuming a standard fit. A 260 x 220cm duvet suits this width. Super king bedding does cost more than king, which is a running expense to factor in.