Millbrook Baroness Natural Wool Mattress
Mattress
Millbrook Baroness Natural Wool Mattress
Size
Firmness
Depth (cm)
25
Layers
4
Layer Details
- Sleep Surface. A Belgian damask viscose cover that feels silky and soft to the touch. It's highly breathable, which means a fresher sleeping environment through the night.
- Comfort Fillings. Sustainably sourced Hampshire wool sits beneath the cover, giving a cosy, cushioning feel. Wool is known for its durability and elasticity, so this layer should keep its shape well.
- Comfort Fillings. A layer of fine English cotton, spun and crafted in the North West of England. Cotton adds softness and helps the mattress breathe.
- Support System. 7-zone ergonomic pocket springs, up to 1000 individually responsive springs in a king size, with the count varying by size. The zoning gives softer comfort at the shoulders and firmer support at the hips and back, which means better spinal alignment for most sleepers.
Layer details from mattressnextday.co.uk product page, September 2026.
- 75cm each for couples: Two people sharing get 75cm of width apiece, which means you can shift position or stretch out without ending up in your partner's space.
- Pocket springs limit disturbance: The individually responsive springs move independently, so if one of you gets up early the other feels less of it across the bed.
- Length for taller sleepers: At 200cm long, the UK king is 10cm longer than the UK double, a real difference for anyone approaching six foot.
- Up to 1000 springs at this size: The king carries up to 1000 pocket springs in its 7-zone system, softer at the shoulders and firmer under the hips.
- Wool breathability across a bigger surface: Hampshire wool helps regulate temperature, useful when two bodies share one mattress and the bed runs warmer than a single sleeper's would.
This size suits you if...
You share the bed every night and a double has started to feel cramped, especially if one of you turns over often or keeps different hours. It also makes sense if one partner is tall, since the 200cm length gives welcome breathing room over a standard double, or if a dog has quietly claimed a corner of the bed and you'd like your own space back.
Consider another size if...
Your bedroom is smaller than the 2.7m x 2.9m we suggest for a UK king, or you sleep alone. In either case we'd recommend the UK double instead, which needs a minimum of around 2.6m x 2.8m.
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Is a UK king big enough for a couple on this mattress?
Yes, for most couples. The Millbrook Baroness in a UK king gives 75cm of width each, 7.5cm more per person than the UK double. Paired with pocket springs that respond individually, that space means one partner getting up early disturbs the other less. If you want maximum separation, the UK super king gives 90cm each.
Will the Millbrook Baroness king fit in my bedroom?
We suggest a room of at least 2.7m x 2.9m for a UK king, which leaves space to walk round the bed and open drawers. New build master bedrooms can shrink quickly once fitted wardrobes go in, so measure the usable floor rather than the room on the plan before committing.
How many springs does the Millbrook Baroness have in a king size?
Up to 1000 individually responsive pocket springs at this size; the count varies with the size you choose. They are arranged in seven zones, softer at the shoulders and firmer at the hips and back, which means the support adjusts to your body across the full 150cm width.
Is the UK king long enough for someone over six foot?
At 200cm, or 6ft 6in, it suits most taller sleepers comfortably. That is 10cm longer than the UK double, so if length rather than width is why you're upgrading, the UK king solves it without stepping up to the wider UK super king, which is the same length.
Where can I buy the Millbrook Baroness in a UK king?
Compare the retailers listed on this page; the prices shown here are updated as retailers change them. Stock and pricing can differ between sizes of the same mattress, so it's worth checking the live table for the UK king specifically rather than assuming it matches another size.