Firmness
Medium Firm
Type
Pocket Spring
Depth (cm)
28
Number of Layers
3
Trial Period (nights)
100
Warranty (years)
10
Price Range
£529 to £1,487
Best Sleeping Position(s)
Certifications
Assessed from the specification published by Mattress Online, captured September 2026, and from regular price comparison across our UK retail partners.
If you sleep hot, the Hampshire wool and cotton comfort layer is a genuine advantage: natural fibres wick moisture and breathe far better than synthetic foams. The 1000 pocket springs react independently to your body, which means support tailored to where you need it and less disturbance from a partner's movement. Butterfly springs and a rod frame around the border firm up the edges, so you can sit or sleep near the side without that rolling-off feeling. It conforms to BS7177: 2008 for home use and Millbrook is a National Bed Federation approved brand. Mattress Online lists a 10-year guarantee and a 100-night trial, although those are the retailer's own terms rather than Millbrook's.
Key Features & what's inside
- Comfort Layer. Sustainably sourced Hampshire wool with fine cotton fibres woven through it, sitting directly beneath you. Wool insulates in winter and breathes in summer, which means a more stable temperature through the night.
- Support System. A core of 1000 steel pocket springs, each enclosed in its own fabric pocket. Because every spring compresses independently, the mattress follows your shape rather than tilting as one surface, which also helps limit partner disturbance.
- Border. Sets of butterfly springs shaped to reinforce the mattress edge, held together by a rod frame. In practice that means firmer edges, useful if you sit on the bed to dress or tend to sleep near the side.
Layer details from mattressonline.co.uk product page, September 2026.
Who's it NOT for?
If you prefer the slow, contouring hug of memory foam, this traditional sprung design will feel too bouncy. Lighter side sleepers may find a medium to firm feel a little hard on shoulders and hips. And if you're set on trying before buying widely, note it's currently stocked by just one retailer.
Millbrook Smooth Tech Luxury 1000 Pocket Mattress
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How firm is the Millbrook Smooth Tech Luxury 1000?
Millbrook describes it as medium to firm. That suits most back and combination sleepers, although lightweight side sleepers may find it slightly too firm. One owner review reported the delivered mattress felt firmer than the listing suggested, so err on the softer side of your expectations.
Does the Millbrook Smooth Tech Luxury 1000 come with a trial?
Mattress Online lists a 100-night trial and a 10-year guarantee. These are the retailer's own terms rather than Millbrook's, so if you buy elsewhere, check that seller's policy before ordering.
What is the Millbrook Smooth Tech Luxury 1000 made of?
A comfort layer of sustainably sourced Hampshire wool woven with cotton fibres, over 1000 individually pocketed steel springs. Butterfly springs and a rod frame reinforce the border. It's handcrafted in the UK and conforms to BS7177: 2008 for home use.
What sizes does the Millbrook Smooth Tech Luxury 1000 come in?
Five UK sizes: Single, Small Double, Double, King and Super King, priced from £529 to £1,487. The mattress is 28cm deep, so check your fitted sheets will stretch to a deeper profile.
Is the Millbrook Smooth Tech Luxury 1000 good for hot sleepers?
It should be a sensible pick. The Hampshire wool and cotton top layer breathes and wicks moisture naturally, and a pocket sprung core allows more airflow than solid foam. If overheating has been a problem on a foam mattress, this construction is a step in the right direction.
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