Millbrook Wool Sublime Firm Pocket 11000 Double Mattress
The Millbrook Wool Sublime Firm Pocket 11000 is a pocket-sprung mattress with wool in the mix, sold as a firm feel.
- Firm feel for back sleepers
- Natural wool, silk & cotton fillings
- Flip & rotate to wear evenly
£1,436.15
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Millbrook Wool Sublime Firm Pocket 11000 Mattress
More available sizes
Mattress details
Mattress
Millbrook Wool Sublime Firm Pocket 11000 Mattress
Size
Firmness
Firm
Construction
Pocket Spring
Wool
Depth (cm)
Layers
2
Layer Details
Central pocket springs
A core of 2000 pocket springs, each housed in its own cloth sleeve. This gives the mattress its firm, supportive base, with each spring working on its own rather than moving as one.
Pocket spring tablet comfort layers
Three layers of 1500 pocket spring tablets sit on either side of the core. Because both sides are built the same way, you can flip and rotate the mattress to help it wear evenly.
Layer details from archerssleepcentre.co.uk product page, October 2026.
Key benefits
- The traditional couples' size: At 135 x 190cm (4ft 6in x 6ft 3in), the UK double is the long-established size for two, giving 67.5cm each for two people sharing.
- Firm support across the full width: A firm pocket-sprung feel means each of you gets support that responds to your own weight rather than your partner's movement.
- Fits most UK bedrooms: We suggest at least 2.6m x 2.8m, which most doubles-era British bedrooms can manage while still leaving room for wardrobes and drawers.
- Room for bedside tables both sides: In an average-sized room a UK double usually leaves space for a table on each side, which a UK king often squeezes out.
- Bedding is easy and cheap to find: Double sheets and a 200 x 200cm duvet are stocked everywhere, useful if you're furnishing a whole home and the budget is already stretched.
This size suits you if...
You share the bed every night and your room sits comfortably above our suggested 2.6m x 2.8m minimum, but a UK king would leave it feeling cramped. It also suits you if you sleep alone and want space to spread out, perhaps with a dog or cat that claims a corner, or you're setting up a guest room that visiting couples will use.
Consider another size if...
You and your partner both like space and your room measures at least 2.7m x 2.9m. The UK king is 15cm wider and 10cm longer, giving 75cm each, so we'd recommend sizing up to the UK king instead.
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FAQ's
Is the Millbrook Wool Sublime Firm Pocket 11000 double big enough for two adults?
It works for most couples. The UK double gives 67.5cm each for two people sharing, which is the traditional British standard, and the firm pocket-sprung construction helps each sleeper stay supported on their own side. If either of you is tall or you both sprawl, the UK king gives 7.5cm more each and an extra 10cm of length.
What room size do I need for this mattress in a UK double?
We suggest allowing at least 2.6m x 2.8m, with around 3m x 3m the comfortable norm. That leaves walking space at the foot and, in most rooms, enough width for bedside tables on both sides. This is our own guidance rather than Millbrook's, so measure your room before ordering.
Should I get the UK double or the UK king in this Millbrook mattress?
It usually comes down to your room. The UK double is 15cm narrower and 10cm shorter than the UK king, and we suggest at least 2.7m x 2.9m for the UK king. If your bedroom clears that with room to spare, the extra width is a real comfort gain for couples; if not, the UK double keeps the room usable.
Where can I buy the Millbrook Wool Sublime Firm Pocket 11000 in a double?
Availability is fairly limited for this model, so compare the retailers listed on this page. The prices shown here are updated as retailers change them, which matters at this end of the market where the difference between sizes runs to hundreds of pounds.
Is a UK double a good choice for a guest room?
Yes, it's arguably the ideal guest size: visiting couples can share it comfortably, and its 135 x 190cm footprint leaves space for a wardrobe and drawers in a second bedroom. This is a premium mattress for a room used occasionally, so weigh that against how often guests stay.