Millbrook Smooth Tech 5000 Pillowtop Mattress
The Millbrook Smooth Tech 5000 Pillowtop Mattress combines a pillow top with a wool, cotton, silk and cashgora comfort layer, which means you get a cushioned, medium-soft feel over a pocket spring core.
- Medium-soft feel for side sleepers
- Pillow top adds extra cushioning
- Wool, cotton & silk comfort layer
£565
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The Millbrook Smooth Tech 5000 Pillowtop is a handcrafted-in-the-UK pocket spring mattress with a pillow top and a wool, cotton, silk and cashgora comfort layer. It's rated medium soft, so it suits side sleepers and lighter sleepers who like a cushioned feel. It comes in UK Single up to Super King. Mattress Online offers a 100-night trial, which requires buying a mattress protector from them.
Mattress specifications
Firmness
Medium Soft
Type
Pocket Spring
Depth (cm)
32
Number of Layers
3
Trial Period (nights)
Warranty (years)
Price Range
£565 to £1,634
Best Sleeping Position(s)
Side Sleeping
Certifications
BS 7177
Assessed from the specification published by mattressonline.co.uk, captured October 2026, and from regular price comparison across our UK retail partners.
Why should you choose this mattress?
The pillow top and the wool, cotton, silk and cashgora comfort layer give a soft, cushioned surface, which means your shoulders and hips should sink in comfortably rather than feel pushed back. Underneath, ergonomic pocket springs and Comfonomic micro springs form the support core. The edge is reinforced with a triple secured border, so the sides should feel steadier than on a mattress without that extra work. The finish is 100% chemical-free, and it's handcrafted in the UK. It suits most side sleepers and lighter back sleepers, although anyone who wants a firmer feel may find it too soft.
Key features & layer details
Pillow top
An additional layer of comfort sitting at the very top of the mattress. It adds extra cushioning, which means a softer first feel as you lie down.
Comfort layer
A fine blend of wool, cotton, silk and cashgora. These natural fibres give the surface its soft, cushioned feel.
Support core
Durable ergonomic pocket springs together with Comfonomic micro springs. This is the part that holds you up beneath the softer layers above.
Layer details from mattressonline.co.uk product page, October 2026.
Best suited for?
Side sleepers
The pillow top and soft wool, cotton, silk and cashgora comfort layer give a cushioned surface, so shoulders and hips should sink in comfortably.
Lighter sleepers
Rated medium soft with an extra pillow top layer, it gives a plush, cushioned feel that suits people who like to sink in.
Back sleepers
Ergonomic pocket springs and Comfonomic micro springs form the support core beneath the soft layers, which suits lighter back sleepers who want a cushioned feel.
Eco-conscious buyers
The comfort layer uses natural fibres including wool, cotton and silk, and the finish is chemical-free, which suits anyone wanting a mattress handcrafted in the UK.
If you prefer sleeping on a firm mattress, this might not be the best choice. It's rated medium soft and the pillow top adds more cushioning, so heavier sleepers and front sleepers who need firmer support may find it too yielding. It's also single-sided, so it can't be flipped, although it does include turning handles.
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.
Millbrook Smooth Tech 5000 Pillowtop Mattress
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FAQ's
How firm is the Millbrook Smooth Tech 5000 Pillowtop?
It's rated medium soft, and the retailer describes it as soft to medium. With a pillow top on top, it suits side sleepers and lighter bodies well, but anyone wanting firm support will probably find it too soft.
What sizes does the Millbrook Smooth Tech 5000 Pillowtop come in?
It comes in five sizes: Single (90 x 190 cm), Small Double (120 x 190 cm), Double (135 x 190 cm), King (150 x 200 cm) and Super King (180 x 200 cm). Every size is 32 cm deep.
How deep is the Millbrook Smooth Tech 5000 Pillowtop?
It's 32 cm deep in every size. That's a fairly substantial mattress, so check that your bed frame and any fitted sheets can take that depth before you buy.
What is the Millbrook Smooth Tech 5000 Pillowtop made of?
The spring count is listed as 5,000, across ergonomic pocket springs and Comfonomic micro springs. On top sit a pillow top and a comfort layer of wool, cotton, silk and cashgora. The finish is 100% chemical-free.
Does the Millbrook Smooth Tech 5000 Pillowtop come with a trial or guarantee?
Mattress Online offers a 100-night trial as its own offer, and you need to buy a mattress protector from them to qualify. A 10-year warranty covers manufacturing faults, although the provider isn't named.
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