Rest Assured Knowlton Latex Pocket 2000 Pillowtop Double Mattress
The Rest Assured Knowlton Latex Pocket 2000 Pillowtop comes in UK Single, Double, King and Super King.
- Medium feel with a cushioned top
- Zoned support where you need it
- Hypoallergenic cover
£602.41
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.
Rest Assured Knowlton Latex Pocket 2000 Pillowtop Mattress
More available sizes
Mattress details
Mattress
Rest Assured Knowlton Latex Pocket 2000 Pillowtop Mattress
Size
Firmness
Medium
Construction
Pocket Spring
Latex
Depth (cm)
Layers
3
Layer Details
Pillow top
An extra layer of comfort across the surface, which gives the mattress a softer, more cushioned feel when you first lie down.
Latex comfort layer
A 2.5cm layer of natural latex sits below the pillow top. It adds a responsive, sink-in comfort between you and the springs.
Pocket springs
Individual springs are encased in cloth pockets and zoned to relieve pressure at key areas of the body, so the base supports different parts of you in different ways.
Layer details from mattressonline.co.uk and archerssleepcentre.co.uk product pages, October 2026.
Key benefits
- Sits well in a typical bedroom: We suggest a room of at least 2.6m x 2.8m, so most main bedrooms and many second bedrooms can take a UK double with space to walk around it.
- Room for bedside tables: With around 3m x 3m, a UK double leaves space for a bedside table on each side, so neither of you has to climb over the other at night.
- Shared width for settled sleepers: Each of you gets 67.5cm, which suits couples who sleep fairly still, although restless sleepers may find a UK double a little snug.
- Bedding is easy to find: Double sheets and a 200 x 200cm duvet are stocked almost everywhere, so dressing the Knowlton in a UK double needs no search for specialist sizes.
- A sensible guest room choice: Visiting couples can share a UK double comfortably, and it leaves a spare room usable for other things in a way a UK super king would not.
This size suits you if...
You share the bed with a partner in an ordinary sized bedroom and want space for furniture around it, or you sleep alone and like the extra 45cm of width a UK double gives over a UK single.
Consider another size if...
One or both of you sprawls, or 67.5cm each already feels tight. We'd recommend the UK king instead, which gives 75cm each; allow at least 2.7m x 2.9m for it.
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
Will a UK double Knowlton fit with bedside tables on both sides?
In most rooms, yes. We suggest at least 2.6m x 2.8m for a UK double, and around 3m x 3m is the comfortable norm if you want a bedside table on each side plus room to open a wardrobe. In a smaller second bedroom, one table may be the realistic option.
How much space does each person get on the Rest Assured Knowlton UK double?
Two people sharing get 67.5cm each. That suits couples who sleep fairly still. The UK king gives 75cm each, so a UK double gives you 7.5cm less per person, which you may notice if either of you moves a lot in the night.
Is the Knowlton pillowtop in a UK double long enough for tall people?
The UK double is 190cm long, or 6ft 3in. If either of you finds your feet near the edge on your current double, the UK king is 10cm longer and would suit you better, although it needs a room of at least 2.7m x 2.9m.
Can I use a UK double on my own if my dog or cat sleeps on the bed?
Yes, and it's a common reason solo sleepers choose a UK double. It's 45cm wider than a UK single, so a pet can take a corner without pushing you towards the edge, while still fitting a room of 2.6m x 2.8m.
Rest Assured Knowlton UK double or UK king for a smaller master bedroom?
If your room is between 2.6m x 2.8m and 2.7m x 2.9m, the UK double is the one that fits. The UK king is 15cm wider and 10cm longer, which gives more room in bed but less around it. Measure your floor before deciding.