Millbrook Smooth Tech 5000 Pillowtop Double 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
£929
Get the lowest price we've found
Save with the previous model
Some retailers still sell the earlier version of this mattress for less than the current model's best price.
Millbrook Smooth Tech 5000 Pillowtop Mattress
More available sizes
Mattress details
Mattress
Millbrook Smooth Tech 5000 Pillowtop Mattress
Size
Firmness
Medium Soft
Construction
Pocket Spring
Wool
Depth (cm)
32
Layers
3
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.
Key benefits
- Fits a typical bedroom: We suggest a room of at least 2.6m x 2.8m, so a UK double usually leaves space for a wardrobe and drawers in a second bedroom or first flat.
- Edges you will actually use: With 67.5cm each, couples tend to sleep close to the sides, and the triple secured border should keep those sides steadier when you lie near them.
- Soft enough for two side sleepers: The pillow top lets each sleeper's shoulders and hips sink into their own spot, which suits a couple who both sleep on their sides.
- Space for bedside tables: The UK double is 15cm narrower and 10cm shorter than the UK king, which can decide whether a modest room takes bedside tables on both sides.
- Easy to dress: Standard double sheets fit, and a 200 x 200cm double duvet gives two people a comfortable overhang on each side.
This size suits you if...
You share the bed in an average-sized bedroom and still want bedside tables on both sides, you and your partner both sleep on your sides and like a cushioned feel, or you're kitting out a guest room where visiting couples will stay for a few nights.
Consider another size if...
You or your partner are broad-shouldered or restless, and 67.5cm each already feels tight. We'd recommend the UK king instead, which gives 75cm each and needs a room of at least 2.7m x 2.9m.
Similar Mattresses in This Price Range
Did you know? On Mattress Unboxed we have over 1,000 different mattresses to suit all types of sleepers. View all mattresses.
FAQ's
Is the Millbrook Smooth Tech 5000 Pillowtop UK double big enough for two people?
For most couples, yes, although it is a close fit. The UK double gives 67.5cm each, so you will sleep nearer the edges than on a bigger size. The triple secured border should help those sides feel steady. If either of you sprawls, the UK king gives 75cm each.
What size room do I need for a Millbrook Smooth Tech 5000 Pillowtop double?
We suggest at least 2.6m x 2.8m for a UK double, with around 3m x 3m giving comfortable space to walk round the bed and open drawers. In a room near our minimum, measure where your bedside tables and wardrobe doors will sit before you buy.
Millbrook Smooth Tech 5000 Pillowtop UK double or UK king for a couple?
The UK double is 15cm narrower and 10cm shorter than the UK king, which works out at 7.5cm less each. Choose the UK king if your room allows at least 2.7m x 2.9m and you want more personal space. Choose the UK double if floor space is tight.
What bedding fits the UK double Millbrook Smooth Tech 5000 Pillowtop?
Standard UK double fitted sheets suit the 135 x 190cm surface, and a 200 x 200cm double duvet covers two sleepers well. The mattress is 32cm deep with a pillow top, so check the fitted sheet's pocket depth before buying, as shallow sheets can slip off the corners.
How big is the Millbrook Smooth Tech 5000 Pillowtop double in feet?
The UK double measures 4ft 6in x 6ft 3in, or 135 x 190cm. That matches a standard UK double bed frame, so it should drop straight into an existing double base.