Millbrook Smooth Tech Luxury 5000 Pocket Mattress

Assessed from the specification published by Mattress Online, captured September 2026, and from regular price comparison across our UK retail partners.

The main appeal here is the layered spring system. The 4000 mini pocket springs sit above 1000 traditional ones, which means you get soothing pressure relief and reduced motion transfer, useful if you share a bed with a restless partner. The comfort layer blends wool, silk, cashgora and cotton, natural fibres that help regulate temperature better than synthetic foams tend to. Edges are reinforced with butterfly springs and a rod frame, so you can sit or sleep near the side without that rolling-off feeling. It conforms to BS7177: 2008, and Millbrook is a National Bed Federation Approved Brand. If you want a traditionally made, natural-filled mattress with a medium feel, this is a strong candidate.

Couples
The 4000 mini pocket springs reduce motion transfer, so you feel less of a restless partner's movement, and the reinforced edges let you both use the full width.

Warm sleepers
A comfort layer of wool, silk, cashgora and cotton wicks moisture and regulates temperature better than foam, which helps the surface stay breathable overnight.

Side sleepers
Medium Soft firmness and mini pocket springs near the surface respond to smaller pressure points, which means shoulders and hips can sink in comfortably.

Lighter sleepers
Because the 30cm depth and Medium Soft feel are plush and the springs move independently, a lighter body should be cradled rather than held up stiffly.

Combination sleepers
Each of the 1000 pocket springs moves on its own, so support follows your shape as you change position through the night.

If you prefer a properly firm mattress, the medium feel here may be too giving, particularly for heavier back sleepers. Some owners mention the turning handles are awkward to use, so if regular rotation feels like a chore, a no-turn design might suit you better. If you prefer memory foam's slow, hugging feel, you won't find it here.

How firm is the Millbrook Smooth Tech Luxury 5000?

The product page describes it as medium. Some owners report it feels slightly firmer than expected, so if you're a lightweight side sleeper hoping for a soft, sinking feel, try it during a trial period if your retailer offers one.

How many springs does the Millbrook Smooth Tech Luxury 5000 have?

It has 5000 springs in total: 1000 traditional pocket springs for core support, topped with 4000 mini pocket springs that add pressure relief and reduce motion transfer.

Does the Millbrook Smooth Tech Luxury 5000 come with a trial?

Mattress Online lists a 100-night trial with this mattress. That trial is the retailer's own offer rather than a Millbrook guarantee, so if you buy elsewhere, check that retailer's terms before ordering.

What is the warranty on the Millbrook Smooth Tech Luxury 5000?

The retailer listing states a 10 year guarantee. As this appears on a retailer's page rather than Millbrook's own site, confirm the warranty terms with your chosen retailer at the point of purchase.

Does the Millbrook Smooth Tech Luxury 5000 need turning?

It has turning handles, which suggests it is designed to be turned. Some owners mention the handles are a little difficult to use, so bear that in mind if you'd struggle to rotate a 30cm-deep mattress.