Wentworth Mercer 2000 Pocket Pro King Size Mattress
The Wentworth Mercer 2000 Pocket Pro Mattress combines 2000 pocket springs with wool, cashmere and silk comfort layers, which means firm support with a soft, natural-fibre feel on top.
- Firm feel for back sleepers
- Natural fibres regulate temperature
- Flip & rotate to spread wear
£735
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.
Wentworth Mercer 2000 Pocket Pro Mattress
More available sizes
Mattress details
Mattress
Wentworth Mercer 2000 Pocket Pro Mattress
Size
Firmness
Firm
Construction
Natural
Pocket Spring
Wool
Depth (cm)
29
Layers
4
Layer Details
Wool, cashmere & silk layers
Two layers of a wool, cashmere and silk blend form the top. They give a plush, cosy surface over the firm feel beneath.
Polyester fibre layers
Two further layers of polyester fibres add comfort and increase airflow, which means the mattress breathes better.
Polyester & cotton layers
Two layers of polyester and cotton wick away moisture, which helps you stay drier through the night.
Pocket spring core
A core of 2000 pocket springs in cloth pockets that adapt to the weight and movement of every sleeper. This gives the firm, supportive base.
Layer details from mattressonline.co.uk product page, November 2026.
Key benefits
- More space each: Each of you gets 75cm of width, 7.5cm more than on a UK double, which means fewer elbows and knees meeting when one of you rolls over.
- Easier on split schedules: The 2000 pocket springs respond to each sleeper's weight and movement, and the extra width adds a little distance when one of you gets up hours earlier.
- Length for a tall partner: At 200cm, the UK king is 10cm longer than a UK double, so a partner over six foot is less likely to end up with their feet past the edge.
- The same firm feel: The UK king carries the same firm rating as the other sizes, so both of you lie on top of the mattress rather than sinking into it.
- Flipping is a two-person job: It's double-sided, and turning a 150 x 200cm mattress that's 29cm deep is far easier with two of you, so plan seasonal flips for when you're both home.
This size suits you if...
You share the bed every night and have started to feel cramped on a UK double, or one of you is close to or over six foot and needs the extra length. It also fits if your partner's early alarm or late nights regularly wake you.
Consider another size if...
Your bedroom is smaller than our suggested 2.7m x 2.9m, or you sleep alone. We'd recommend the UK double instead, and we suggest at least 2.6m x 2.8m for that.
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 Wentworth Mercer 2000 Pocket Pro UK king big enough for two adults?
For most couples, yes. The UK king gives you 75cm each, which is 7.5cm more each than the UK double. If you both sprawl, or a dog regularly claims the middle, the UK super king gives you 90cm each, so the UK king gives you 15cm less each than that.
What size bedroom do I need for a UK king mattress?
We suggest at least 2.7m x 2.9m, and 3.2m x 3.2m feels comfortable. New build master bedrooms often seem roomy until the wardrobes go in, so measure from the fitted furniture rather than the bare walls before you choose the UK king.
Is a UK king long enough for someone over 6ft?
The UK king is 200cm long (6ft 6in), which is 10cm longer than a UK double. If one partner is tall, that length is often the more noticeable upgrade, more so than the extra width. The UK super king is the same length, so sizing up beyond the UK king adds width only.
Should I get the Wentworth Mercer 2000 Pocket Pro in a UK king or a UK super king?
Choose the UK king if your room is around our suggested 2.7m x 2.9m. The UK super king is 30cm wider and gives 90cm each, but we suggest at least 3m x 2.9m for it. If space is tight, measure the room first, then compare the retailers listed on this page for both sizes.
What bedding fits a UK king Wentworth Mercer 2000 Pocket Pro?
Standard UK king sheets fit, along with a 230 x 220cm king duvet. The mattress is 29cm deep, so check that your fitted sheet has deep enough pockets. Sheets with shallow pockets can slip off the corners, and because this mattress is double-sided, the sheets will need to fit whichever side is facing up.