Harrison Spinks Gold 9500 Pocket King Size Mattress (Firmer Feel)
The Harrison Spinks Gold 9500 Pocket Mattress (Firmer Feel) is a pocket spring mattress with a firm rating, which means the springs move independently to follow your shape while keeping a noticeably supportive surface underneath you.
- Holds you up rather than sinking
- Less roll-together than open coil
- Traditional hand-built construction
£1,649
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Harrison Spinks Gold 9500 Pocket Mattress (Firmer Feel)
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Mattress details
Mattress
Harrison Spinks Gold 9500 Pocket Mattress (Firmer Feel)
Size
Firmness
Firm
Construction
Pocket Spring
Wool
Natural
Depth (cm)
Layers
5
Layer Details
Pocket springs
1000 Cortec Quad Revolution springs sit in cloth pockets and are grouped in fours, with mini springs inside the regular springs. This is the main support layer, so it is what gives the mattress its firm, held-up feel.
Mini pocket springs
A layer of 1000 Posturfil springs, plus an extra 7500 mini springs, sits above the main springs for contouring. It adds some shape-following give on top of the firm support below.
Wool, hemp and flax blend layer
Layers of wool, hemp and flax are blended to improve breathability. Air can move through the mattress more easily, which helps if you tend to feel the heat at night.
Cotton, hemp and flax layer
An extra layer of cotton, hemp and flax wicks moisture away. That should help the surface feel drier and fresher while you sleep.
Wool comfort layer
The top layer is 100% traceable British wool, which gives a plush surface. It softens the feel at the top, though the mattress overall is still firm.
Layer details from harrisonspinks.co.uk and mattressonline.co.uk product pages, October 2026.
Key benefits
- Proper space for two: At 75cm each for two people sharing, you both get room to turn without negotiating, which makes a firm surface feel far less confining.
- Less partner disturbance: Pocket springs respond individually, so when one of you gets up hours before the other, movement is less likely to travel across the extra width.
- Length for taller sleepers: The UK king runs to 200cm, which is 10cm longer than the UK double, a real relief if one of you is approaching six foot.
- A firm feel that suits sharing: A firmer surface keeps the mattress stable at the edges and centre alike, so neither sleeper rolls towards the middle.
- Fits a normal master bedroom: We suggest allowing at least 2.7m x 2.9m, which most UK master bedrooms manage without giving up bedside tables on both sides.
This size suits you if...
You share the bed every night and a double has started to feel cramped, especially if one of you keeps different hours and the other feels every exit and return. It also suits couples where one partner is tall, since the 200cm length removes the dangling-feet problem, or households where the dog has quietly claimed a strip of the bed and 135cm no longer stretches to three.
Consider another size if...
Your room falls short of the 2.7m x 2.9m we suggest for a UK king, or you sleep alone. In a smaller room, the UK double would suit you better; allow at least 2.6m x 2.8m for that size.
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FAQ's
Is a UK king big enough for a couple on this firm mattress?
Yes, for most couples. You get 75cm each for two people sharing, and because the Gold 9500 has a firm feel with independently moving pocket springs, you're unlikely to drift towards each other in the night. Lightweight side sleepers should still think carefully about the firmness itself, whatever the size.
Will the UK king Gold 9500 reduce disturbance from my partner?
It helps in two ways. The pocket springs compress individually, so movement on one side transfers less to the other, and the 150cm width, 15cm more than a UK double, puts physical distance between you. If one of you gets up hours earlier, that combination makes a noticeable difference.
Is the Harrison Spinks Gold 9500 king long enough for someone over six foot?
The UK king is 200cm long, or 5ft x 6ft 6in overall, which is 10cm longer than the UK double. For anyone approaching or just over six foot, that extra length is often the real reason to size up, more than the width.
What room size do I need for this mattress in a UK king?
We suggest allowing at least 2.7m x 2.9m. That leaves enough clearance to walk round the bed and keep bedside tables on both sides. New build master bedrooms can be tighter than they look once wardrobes go in, so measure the usable floor rather than the room on the plan.
Should I go for the UK king or the UK super king in this mattress?
The UK king is 30cm narrower than the UK super king, and the two are the same length, so the choice is purely about width and room size. If you have at least 3m x 2.9m and want maximum personal space, the UK super king is the step up; otherwise the UK king is the sensible fit.