Millbrook Wool Sublime Firm Pocket 8000 Double Mattress
The Millbrook Wool Sublime Firm Pocket 8000 is a pocket sprung mattress from Millbrook, a British brand with a long association with natural wool fillings.
- Pocket-sprung support
- Traditionally made
- Sizes to fit unusual bed frames
£1,244.23
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 Wool Sublime Firm Pocket 8000 Mattress
More available sizes
Mattress details
Mattress
Millbrook Wool Sublime Firm Pocket 8000 Mattress
Size
Firmness
Firm
Construction
Pocket Spring
Wool
Depth (cm)
Layers
2
Layer Details
Natural fillings
Deep layers of Hampshire wool, cashgora wool, silk and soft English spun cotton sit on top. These natural fibres give the firm feel a softer, more cushioned surface, though the mattress as a whole stays firm.
Pocket spring interior
The core is 2000 inner pocket springs, with a 1000 and a 2000 tablet comfort layer of pocket springs on either side. Because the springs work independently, you get steady support across the bed, and the double-sided build means it can be flipped and rotated.
Layer details from archerssleepcentre.co.uk and bedconnect.co.uk product pages, October 2026.
Key benefits
- The classic shared size: At 135 x 190cm you get 67.5cm each for two people sharing, enough for most couples who sleep reasonably close.
- Fits typical UK bedrooms: We suggest a room of at least 2.6m x 2.8m, which most double bedrooms in terraces, semis and new builds clear comfortably.
- Room for bedside tables: Where a UK king can push furniture out, the UK double usually leaves space for a table and lamp on both sides of the bed.
- Firm support for two: A firm pocket sprung construction, which means each sleeper's weight is supported independently, useful when partners differ in size or turn over at different times.
- Easy to dress: Standard double sheets and a 200 x 200cm duvet fit, both stocked everywhere at every price point.
This size suits you if...
You're a couple in a typical UK bedroom where a bigger bed would dominate the floor space, or a solo sleeper who likes room to spread out and prefers a firmer feel. It also makes sense if you want bedside tables on both sides without the room feeling cramped, since the UK double leaves more walkaround space than the larger sizes.
Consider another size if...
You and your partner both like space and your room can take something bigger. The UK King gives 75cm each for two sharing, so the UK Double gives 7.5cm less each; we'd recommend the UK king if your room allows 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 UK double Millbrook Wool Sublime big enough for a couple?
For most couples, yes. The UK double gives 67.5cm each for two people sharing, which suits partners who don't mind sleeping fairly close. If one of you is broad shouldered or you both spread out, the UK King gives 75cm each for two sharing, a noticeable difference night to night.
What room size do I need for this mattress in a UK double?
We suggest at least 2.6m x 2.8m, with around 3m x 3m the comfortable norm. That allows walking space around the bed and room for a wardrobe or chest of drawers, which matters if this is going into a first flat or a second bedroom already holding other furniture.
Will the UK double fit up the stairs in an older house?
At 135cm wide and 190cm long it's one of the easier sizes to move, and pocket sprung mattresses can flex a little around a turn. Measure any tight landings or turning stairs before ordering, and ask the retailer about their delivery access policy, since Millbrook doesn't publish handling guidance for this model.
Should I get the Millbrook Wool Sublime in a double or a king?
It comes down to your room. The UK double is 15cm narrower and 10cm shorter than the UK king, so it fits where a king would crowd the furniture. If your bedroom clears 2.7m x 2.9m and you share every night, the UK king is the more comfortable long-term buy.
Does the UK double work in a guest room?
It's a strong guest room choice because it accommodates visiting couples as well as solo guests, and the firm pocket sprung feel suits a wide range of sleepers you can't predict in advance. Bedding is simple too: standard double sheets and a 200 x 200cm duvet, available everywhere.