Millbrook Wool Sublime Pocket 3000 King Size Mattress
Millbrook

Millbrook Wool Sublime Pocket 3000 King Size Mattress

The Millbrook Wool Sublime Pocket 3000 is a pocket sprung mattress from Millbrook, available in six UK sizes from Small Single up to Super King.

  • Natural wool & silk fillings
  • Double-sided, flips & rotates
  • Balanced medium feel

£647.42

Size: King Size. Available at Archers Sleepcentre

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Where can I buy the Millbrook Wool Sublime Pocket 3000 King Size Mattress?

Below are the best prices for the Millbrook Wool Sublime Pocket 3000 Mattress in a King Size. Available from (9) trusted retailers.

Millbrook Wool Sublime Pocket 3000 Mattress

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Prices last checked:
11th November 2026

Mattress dimensions for the Millbrook Wool Sublime Pocket 3000 King Size Mattress

Length: 200cm

Width: 150cm

(5ft x 6ft 6in)

Minimum room size: 2.7m x 2.9m

Mattress details

Mattress Details for the Millbrook Wool Sublime Pocket 3000 King Size Mattress

Mattress

Millbrook Wool Sublime Pocket 3000 Mattress

Size

UK King (5ft x 6ft 6in)

Firmness

Medium

Construction

  • Pocket Spring

  • Wool

Depth (cm)

Layers

Layer Details

Key benefits

Key Benefits of the Millbrook Wool Sublime Pocket 3000 King Size Mattress

  • Proper space for two: At 75cm each for two people sharing, neither of you needs to negotiate the middle of the bed every night.
  • A real step up from a double: The UK king is 15cm wider and 10cm longer than the UK double, which gives each sleeper 7.5cm more width.
  • Pocket springs and different schedules: Pocket springs move independently, which means an early alarm on one side is less likely to travel across the mattress and wake the other.
  • Extra length for taller sleepers: The 200cm length stops feet hanging off the end, a quiet relief for anyone tall who has been making do with a 190cm double.
  • Room to shift position: If one of you is pregnant, recovering from surgery or simply restless, the extra width makes propping pillows and changing position far less disruptive.

Who should buy the Millbrook Wool Sublime Pocket 3000 King Size Mattress?

This size suits you if...

You share the bed every night and have outgrown a double, or one of you gets up hours before the other and you want the movement to stay on their side. It also suits couples where one partner is tall enough that the 200cm length is the real draw, or where pillows, a restless sleeper or a dog regularly claim more than their share.

Consider another size if...

Your bedroom is smaller than the 2.7m x 2.9m we suggest as a minimum for a UK king, or you sleep alone. In either case we'd recommend the UK double instead, which needs at least 2.6m x 2.8m.

FAQ's

Frequently Asked Questions About the UK King

How much space do two people get on the Millbrook Wool Sublime Pocket 3000 in a UK king?

Two people sharing get 75cm of width each. That's 7.5cm more per person than the UK double offers, which sounds modest on paper but is the difference between turning over freely and waking your partner. The pocket sprung construction helps here too, since each spring compresses independently rather than pulling the surface with it.

Will a UK king Millbrook Wool Sublime fit my bedroom?

We suggest a room of at least 2.7m x 2.9m for a UK king, with around 3.2m x 3.2m feeling comfortable once wardrobes and bedside tables are in. New build master bedrooms can be tighter than they look on a plan, so measure with your furniture in place before committing. If space is short, the UK double needs at least 2.6m x 2.8m.

Is the UK king long enough for a tall sleeper?

At 200cm, the UK king is 10cm longer than the UK double, and for anyone approaching six foot that extra length is often the whole point of the upgrade. If you're taller still and the room allows, the UK super king is the same length but adds 30cm of width, giving 90cm each for two sharing.

Should I get the Millbrook Wool Sublime in a king or super king?

The UK super king is 30cm wider than the UK king, giving 90cm each for two sharing rather than 75cm, but it needs a room of at least 3m x 2.9m. The UK king is the sensible middle ground: noticeably more space than a double without demanding a very large room. Go super king only if the floor space is genuinely there.

Where can I buy the Millbrook Wool Sublime Pocket 3000 in a UK king?

Compare the retailers listed on this page; the prices shown are updated as retailers change them. Millbrook publishes limited detail on this model's construction and firmness, so it's worth reading the retailer's own listing carefully before you order, particularly if you have a firm preference on feel.