Harrison Spinks Silver 6500 Pocket King Size Mattress (Firmer Feel)
The Harrison Spinks Silver 6500 is a pocket spring mattress in a firm feel, with springs that move independently so a partner shifting in the night disturbs you less.
- Firm feel without sinking too far
- Deeper support under heavier hips
- Five sizes including Small Double
£1,299
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Harrison Spinks Silver 6500 Pocket Mattress (Firmer Feel)
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Mattress details
Mattress
Harrison Spinks Silver 6500 Pocket Mattress (Firmer Feel)
Size
Firmness
Firm
Construction
Pocket Spring
Wool
Natural
Depth (cm)
Layers
5
Layer Details
British wool & viscose blend
The top layer is a blend of British wool and viscose, with a cover that is free of FR chemical treatment. It gives you a natural-fibre surface to sleep on rather than a foam one.
British wool, hemp & flax blend
A layer of British wool, hemp and flax, included for breathability. It should help air move through the mattress, which is useful if you tend to run warm.
Cotton, hemp & flax blend
This layer is designed to wick away moisture and reduce mould and mildew. In practice, that helps keep the inside of the mattress fresher over time.
Pocket springs
Cortec Quad Revolution and Posturfil pocket springs, with mini and micro springs for contouring. The springs work independently, so the support follows the shape of your body.
Sustainable Ecotex base
The base layer is made from recycled fibres, which adds durability. It gives the natural layers above a firm foundation and suits you if recycled materials matter to you.
Layer details from mattressonline.co.uk and thebedshopedinburgh.co.uk product pages, October 2026.
Key benefits
- 75cm of width each: Two people sharing get 75cm apiece, which means you can settle into your own position without negotiating for space all night.
- Less disturbance on different schedules: Because each pocket spring moves on its own, an early riser slipping out at 6am is far less likely to wake the person still asleep.
- Extra length for taller sleepers: At 200cm, the UK king is 10cm longer than the UK double, a real relief if one of you is approaching six foot.
- Firm support spread across a wider bed: The firmer feel holds back and front sleepers level, and the extra width means heavier and lighter partners each get support where they need it.
- A sensible room fit: We suggest at least 2.7m x 2.9m for a UK king, which most master bedrooms manage where a UK super king would feel cramped.
This size suits you if...
You share the bed every night and a double has started to feel like a compromise, especially if one of you gets up hours before the other. It also suits couples where one partner is tall, since the 200cm length adds headroom a double lacks, or where you both prefer a firm, supportive surface and want that feel with more space to enjoy it.
Consider another size if...
Your bedroom falls short of the 2.7m x 2.9m we suggest for a UK king, or you sleep alone. In either case we'd recommend the UK double instead; 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 the Silver 6500?
Comfortably, for most couples. The UK king measures 150 x 200cm, giving 75cm of width each for two people sharing. Combined with the independent pocket springs, that width means one partner shifting or getting up disturbs the other far less than on a smaller shared bed.
Is the UK king Silver 6500 long enough for someone over six foot?
At 200cm, it offers 10cm more length than a UK double, which is often the difference between feet hanging off the end and lying flat comfortably. If length is your main frustration with your current bed, the UK king solves it without needing a super king sized room.
What room size does the Silver 6500 in a UK king need?
We suggest a minimum of 2.7m x 2.9m so you can walk around both sides and open wardrobe doors. New build master bedrooms can be tighter than they look once furniture goes in, so measure with the wardrobes and bedside tables in place rather than the empty floor.
Should I get the Silver 6500 in a king or a super king?
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 space. We suggest at least 3m x 2.9m for the UK super king; if your room falls short of that, the UK king is the better fit.
Will a firm mattress in this size reduce partner disturbance?
The size and the springs work together here. Each pocket spring compresses independently, so movement on one side travels less, and the UK king's 150cm width adds physical distance between you. If your schedules differ, or a dog claims part of the bed most nights, that combination matters more than firmness alone.