Millbrook Wool Sublime Soft Pocket 11000 Double Mattress
The Millbrook Wool Sublime Soft Pocket 11000 is a premium pocket sprung mattress from Millbrook, available in six UK sizes from Small Single up to Super King.
- Soft, cushioned feel for side sleepers
- Natural wool & silk fillings
- Double-sided for even wear
£1,436.15
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Millbrook Wool Sublime Soft Pocket 11000 Mattress
More available sizes
Mattress details
Mattress
Millbrook Wool Sublime Soft Pocket 11000 Mattress
Size
Firmness
Soft
Construction
Pocket Spring
Wool
Depth (cm)
Layers
4
Layer Details
Viscose cover
A chemical-free viscose fabric that is soft to the touch, breathable and has a silk-like lustre. It gives a smooth, gentle surface to sleep on.
Natural fillings
Layers of Hampshire wool, cashgora wool, silk and soft English spun cotton, hand tufted to hold them in place. They give a natural, cushioned feel and keep the filling from shifting.
Pocket spring comfort layers
Three 1500 pocket spring tablet comfort layers sit on either side of the central springs. They add a springy cushioning on both sides, which suits a mattress you can turn.
Central pocket spring core
A central core of 2000 pocket springs, each housed in its own cloth sleeve. Each spring works on its own, so the core gives support that follows your body.
Layer details from archerssleepcentre.co.uk and bedconnect.co.uk product pages, October 2026.
Key benefits
- The classic shared size: At 4ft 6in x 6ft 3in, the UK double is the long standing choice for two, which means bedding and frames are easy to find anywhere.
- 67.5cm each for couples: Two people sharing get 67.5cm of width apiece, enough for most couples who sleep fairly close rather than sprawled.
- Fits most UK bedrooms: We suggest a room of at least 2.6m x 2.8m, which leaves space for bedside tables on both sides in a typical master bedroom.
- A soft feel without a huge footprint: The soft pocket sprung build offers a gentler surface, which suits side sleepers, in a size that still leaves floor space for wardrobes and drawers.
- Easier to move in than larger sizes: The UK double is 15cm narrower and 10cm shorter than the UK king, a helpful difference on the turning stairs of older terraces or a tight new build landing.
This size suits you if...
You share the bed every night and your bedroom is a typical UK size, where a bigger mattress would leave no room to walk around. Or you're setting up a guest room and want visiting couples to be genuinely comfortable rather than squeezed into something smaller. It also suits a solo sleeper who likes to spread out, even with a dog or cat claiming one corner.
Consider another size if...
You and your partner both want more personal space, since 67.5cm each can feel snug. We'd recommend the UK king instead: it gives 75cm each for two sharing, and needs a room of at least 2.7m x 2.9m.
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FAQ's
Is the Millbrook Wool Sublime Soft Pocket 11000 in a UK double big enough for a couple?
For most couples, yes. The UK double gives 67.5cm each for two people sharing, which works well if you sleep fairly close. If one of you is broad shouldered or a restless sleeper, that width can feel a little tight, and the UK king's 75cm each may suit you better.
What room size do I need for the UK double Millbrook Wool Sublime?
We suggest at least 2.6m x 2.8m, with around 3m x 3m the comfortable norm. That allows bedside tables on both sides plus space to open a wardrobe. If your room is smaller than that, the UK small double, at 15cm narrower and the same length, needs a room of at least 2.4m x 2.8m.
Should I buy this mattress in a UK double or a UK king?
The UK double is 15cm narrower and 10cm shorter than the UK king, so it fits rooms where a UK king would dominate. The trade off is space: the UK king gives 75cm each for two sharing, so the UK double gives 7.5cm less each. Given the premium price of this mattress, choose the size your room genuinely allows.
Will the UK double fit up a narrow staircase?
It has a better chance than the larger sizes, since it's 15cm narrower and 10cm shorter than the UK king, which helps on tight turns in older terraces or a narrow new build landing. Millbrook hasn't published full construction detail for this model, so check the retailer's listing for depth and handling guidance before delivery day.
Is a UK double a good choice for a guest room?
Yes, it's arguably the ideal guest room size: visiting couples can share comfortably with 67.5cm each, and double bedding is stocked everywhere at every price. One caution is the cost. This is a premium mattress, so for a bed used a few weekends a year, you may prefer to reserve it for the room you sleep in nightly.