Wentworth Mercer Natural Pocket 1000 Mattress
The Wentworth Mercer Natural Pocket 1000 is a medium feel pocket spring mattress, handcrafted in the UK.
- Quick bounce-back when you move
- Follows your body shape
- Airflow helps if you sleep warm
£378
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At 29cm deep, the Wentworth Mercer Natural Pocket 1000 pairs 1000 pocket springs with cotton, polyester and soft white fibre fillings, finished with wool tufts. It's available in UK Single through to Super King, and Mattress Online lists it with a 5 year guarantee and a 100-night trial. That trial does come with a condition, though: you need to buy a mattress protector from Mattress Online to qualify.
Mattress specifications
Firmness
Medium Firm
Type
Pocket Spring
Depth (cm)
29
Number of Layers
3
Trial Period (nights)
100
Warranty (years)
5
Price Range
£378 to £634
Best Sleeping Position(s)
Back Sleeping
Stomach Sleeping
Combination Sleeping
Certifications
BS 7177
Assessed from the specification published by Mattress Online, captured September 2026, and from regular price comparison across our UK retail partners.
Why should you choose this mattress?
This is a sensible pick if you want a traditional pocket sprung feel without a big price tag. The 1000 individual pocket springs move independently, which means the mattress responds to your body shape rather than pushing back as one solid unit, and the design is intended to give greater bounce-back. Above the springs, layers of soft white fibres help air move through the mattress, useful if you tend to sleep warm. The natural touches, cotton fillings and wool tufts, are modest at a mid-range starting price, but they're welcome. It carries National Bed Federation approval and conforms to BS7177: 2008 for fire resistance, so the essentials are properly certified.
Key features & layer details
Comfort fillings
Two layers combining polyester and cotton sit at the sleep surface, which means a soft, cushioned first impression when you lie down. The cotton adds a touch of natural breathability to the synthetic fill.
Soft white fibres
Beneath the comfort layers, two layers of soft white fibres help air circulate through the mattress. This works to move heat and moisture away from you, so the bed feels fresher for longer.
Pocket springs
1000 pocket springs form the core of the mattress, each moving independently to follow the shape of your body. Their curved design is intended to react quickly and spring back, so the mattress shouldn't feel dead or unresponsive when you change position.
Layer details from mattressonline.co.uk product page, September 2026.
Best suited for?
Warm sleepers
Two layers of soft white fibres sit above the springs to help air circulate, which moves heat and moisture away so the bed feels fresher for longer.
Couples
Each of the 1000 pocket springs moves independently, which means the mattress follows each person's body shape rather than pushing back as one solid unit.
Combination sleepers
The curved pocket springs are designed to react quickly and spring back, so the mattress shouldn't feel dead or sluggish whenever you change position.
Side sleepers
Two cushioned layers of polyester and cotton at the sleep surface give a soft first impression, while the independent springs follow the shape of your body.
Eco-conscious buyers
Cotton fillings and wool tufts add natural touches to the build, though modest, alongside National Bed Federation approval and BS7177: 2008 fire resistance certification.
If you prefer a properly firm mattress, this one is listed as medium, so it may feel softer than you'd like, particularly if you're a heavier back or stomach sleeper. Equally, if you want memory foam contouring or a deep, hotel-style pillow top, a traditional sprung design like this won't give you that sink-in feel.
Save on an earlier or ex-display model
Some retailers still sell the earlier version of this mattress, or ex-display and returned stock at a lower price. These are the sizes where it costs less than the current model's best price.
Wentworth Mercer Natural Pocket 1000 Mattress
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FAQ's
How firm is the Wentworth Mercer Natural Pocket 1000?
The product page lists it as medium. That suits most sleepers, although lightweight side sleepers may still find pocket sprung mattresses a little firmer-feeling than foam alternatives, and heavier people who want strong pushback may prefer something firmer.
Does the Wentworth Mercer Natural Pocket 1000 come with a trial?
Mattress Online lists a 100-night trial with this mattress. Do note the condition: the trial requires you to buy a mattress protector from Mattress Online to be eligible. It's the retailer's offer rather than the manufacturer's, so terms may differ if you buy elsewhere.
What guarantee does the Wentworth Mercer Natural Pocket 1000 have?
Mattress Online lists a 5 year guarantee with this mattress. As this appears on a retailer listing rather than the brand's own site, check the guarantee terms with whichever retailer you buy from.
How deep is the Wentworth Mercer Natural Pocket 1000 mattress?
It's 29cm deep. That's a reasonably generous depth for a pocket sprung mattress at a mid-range starting price, though it's worth checking your fitted sheets will stretch to accommodate it.
What sizes does the Wentworth Mercer Natural Pocket 1000 come in?
It's available in UK Single, UK Double, UK King and UK Super King.
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