Relyon Memory Plus 1800 Pocket Mattress
Mattress
Relyon Memory Plus 1800 Pocket Mattress
Size
Firmness
Firm
Construction
Depth (cm)
31
Layers
3
Layer Details
- Respire Memory Foam. A 4.5cm layer of Respire memory foam sits at the top, which means pressure relief for aching joints before you reach the firmer springs below. It softens the initial feel of an otherwise firm mattress.
- Posturepocket Springs. 1,000 Posturepocket springs provide the main support layer. Because each spring moves independently, your body is supported along its full length rather than sagging into one spot.
- Mini Pocket Springs. A base of 800 mini pocket springs responds to your individual body shape and movements. This second spring layer adds a more precise, adaptive quality than a single spring unit would give.
Layer details from mattressonline.co.uk product page, September 2026.
- 75cm each for two sharing: The UK king gives 75cm each for two people sharing, so you can settle into your own space rather than negotiating the middle.
- Less disturbance across the width: With 1,000 Posturepocket springs moving independently, one partner getting up early transfers less movement, and the wider UK king puts more distance between you anyway.
- 200cm of length for taller sleepers: At 200cm long, the UK king is 10cm longer than the UK double, which means a partner over six foot stops finding their feet at the edge.
- Firm support that holds across a wide surface: The 800 mini pocket springs beneath the main unit respond to each sleeper's shape, so two different body weights are supported separately across the full 150cm width.
- A cushioned surface on a firm base: The 4.5cm Respire memory foam layer softens contact points, which means the firmness supports rather than pushes back where hips and shoulders press in.
This size suits you if...
You share the bed every night and a double has started to feel tight, you specifically want a firm feel with a little surface cushioning, or one of you is on a different schedule and wants their early alarm to go unnoticed. It also suits a taller sleeper who needs the 200cm length as much as the width.
Consider another size if...
Your bedroom is smaller than the 2.7m x 2.9m we suggest for a UK king, or you sleep alone and don't need 150cm of width. This mattress isn't currently listed in any other size, so a different model would serve you better.
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What room size do I need for the Relyon Memory Plus 1800 in a UK king?
We suggest a room of at least 2.7m x 2.9m for a UK king, which allows you to walk round both sides and open drawers or wardrobes without squeezing past the bed. A new build master bedroom can shrink quickly once fitted wardrobes go in, so measure the usable floor space rather than trusting the floor plan.
How much space does each person get on the Relyon Memory Plus 1800 UK king?
The UK king is 150cm wide, giving 75cm each for two people sharing. That's 7.5cm more each than a UK double provides. Combined with the 1,000 Posturepocket springs, which compress under each sleeper independently, it means you feel less of your partner's shifting and more of your own settled space.
Is the Relyon Memory Plus 1800 available in sizes other than UK king?
Not at the moment. The UK king, at 150 x 200cm, is the only size currently listed. If you need a smaller or larger mattress, you'd have to look at a different model. Availability can change, so the retailers shown on this page are the place to check for updates.
Is the UK king version of this mattress long enough for someone over six foot?
At 200cm, the UK king gives 10cm more length than a UK double, and for a tall sleeper that length is often the real upgrade rather than the width. Someone approaching or over six foot gets room to stretch fully without their feet hanging off the end, which a 190cm mattress rarely allows.
Will a king size reduce partner disturbance on this mattress?
It helps in two ways. The 150cm width puts more distance between you than a double, and the pocket spring construction means movement on one side is absorbed there rather than travelling across. If one of you leaves for work hours before the other, that combination makes the early exit far easier to sleep through.