Wentworth Mercer Natural Pocket 2000 Ortho King Size Mattress
The Wentworth Mercer Natural Pocket 2000 Ortho is an extra firm pocket spring mattress, handcrafted in the UK.
- Extra-firm with comfort on top
- Less roll-together than open coils
- Cotton wicks moisture for hot sleepers
£799
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Wentworth Mercer Natural Pocket 2000 Ortho Mattress
More available sizes
Mattress details
Mattress
Wentworth Mercer Natural Pocket 2000 Ortho Mattress
Size
Firmness
Extra Firm
Construction
Pocket Spring
Wool
Orthopaedic
Natural
Depth (cm)
29
Layers
3
Layer Details
Cotton and Polyester Comfort Layer
Two layers blending cotton and polyester give a cushioned surface feel. The cotton naturally wicks away moisture while the polyester improves airflow, which means less heat building up as you sleep.
Soft White Fibres
Two layers of soft white fibres sit beneath the top layer. These are resilient and cushioning, which helps the comfortable feel last longer.
Pocket Spring Core
A core of 2000 durable steel pocket springs, each encased in its own cloth pocket. Because the springs move independently, support adjusts to each part of your body rather than the mattress compressing as one block.
Layer details from mattressonline.co.uk product page, September 2026.
Key benefits
- More room each than a UK double: You get 75cm each, which is 7.5cm more per person than the UK double, so a stray elbow or a turned shoulder is less likely to land on your partner.
- Fewer wake-ups on early starts: Each of the 2000 springs sits in its own pocket and moves independently, which means the partner who rises first is less likely to jolt the other awake.
- Length for a tall partner: The UK king is 10cm longer than the UK double, so a taller sleeper can stretch out on this extra firm surface without their feet reaching the end.
- Space to change position: A firm surface makes it easy to shift position through the night, and the 150cm width lets you do that without drifting towards your partner in the middle.
- A modest step up in floor space: We suggest a bedroom of at least 2.7m x 2.9m, only slightly more than the 2.6m x 2.8m we suggest for the UK double.
This size suits you if...
You share the bed every night and have started to feel cramped on a UK double, or one of you leaves for work long before the other wakes. It also fits a household where a tall partner keeps running out of mattress at the foot end.
Consider another size if...
Your bedroom falls short of our suggested 2.7m x 2.9m once the wardrobes are in. We'd recommend the UK double instead, which needs at least 2.6m x 2.8m.
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FAQ's
Is the Natural Pocket 2000 Ortho UK king big enough for two people?
For most couples, yes. The UK king gives you 75cm each, which is 7.5cm more per person than the UK double. If you both sprawl, or a dog regularly claims a corner, the UK super king gives 90cm each. That is 15cm more per person than the UK king, although the UK super king needs a bigger room.
Will I feel my partner move on a UK king Wentworth Mercer Natural Pocket 2000?
Less than you would on a smaller size. The pocket springs move independently, so one person turning over is less likely to shake the other side. On a UK king you also have 75cm each rather than the 67.5cm each a UK double gives, so there is a little more distance between you.
Is the Wentworth Mercer Natural Pocket 2000 UK king long enough for a tall person?
It is 200cm long, or 6ft 6in, which is 10cm longer than the UK double. The UK king and the UK super king are the same length. If length is your only concern, sizing up to the UK super king would give you extra width but no extra length.
Will a UK king mattress fit in a new build master bedroom?
Often, but measure after the wardrobes and bedside tables are in, because new build rooms can feel much smaller once furnished. We suggest at least 2.7m x 2.9m for the UK king, and 3.2m x 3.2m feels comfortable. If you fall short, the UK double needs at least 2.6m x 2.8m.
Should I get the Natural Pocket 2000 Ortho in a UK king or UK super king?
The UK king suits most couples. The UK super king is 30cm wider and gives 90cm each against 75cm on the UK king, but it needs at least 3m x 2.9m of floor space. Choose the UK super king only if your room allows it and you regularly feel short of width.