Relyon Memory Plus 1800 Pocket Mattress
The Relyon Memory Plus 1800 Pocket is a firm hybrid mattress that pairs 1,800 pocket springs with a 4.5cm layer of memory foam, which means you get sturdy support with some cushioning where your hips and shoulders press in.
- Firm support that adapts to you
- Memory foam eases pressure points
- Probiotic-treated knitted cover
£894
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The Relyon Memory Plus 1800 is 31cm deep, handcrafted in the UK, and Relyon is a National Bed Federation Approved Brand. Available in UK King, it sits at the pricier end, though the traditional build and 8-year guarantee listed by the retailer go some way to justifying that. It suits sleepers who specifically want a firm feel; lightweight side sleepers may find it a little too unyielding.
Mattress specifications
Firmness
Firm
Type
Hybrid
Depth (cm)
31
Number of Layers
3
Trial Period (nights)
100
Warranty (years)
8
Price Range
£894
Best Sleeping Position(s)
Back Sleeping
Stomach Sleeping
Certifications
BS 7177
Assessed from the specification published by Mattress Online, captured September 2026, and from regular price comparison across our UK retail partners.
Why should you choose this mattress?
Choose this mattress if you want firm support without the dead, flat feel of an all-foam bed. The 1,000 Posturepocket springs work with 800 mini pocket springs underneath, which means the surface responds to your individual shape rather than pushing back uniformly. Above that, the Respire memory foam layer eases pressure on aching joints, so the firmness shouldn't feel harsh at contact points. The cover is knitted and includes a Bio-Protect probiotic treatment. The owner rating is middling, and it's only listed in UK King, but if a firm hybrid from an established British maker is what you're after, this fits the brief.
Key features & 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.
Best suited for?
Back sleepers
Firm support from 1,000 Posturepocket springs keeps the body supported along its full length, which suits anyone who likes to lie flat without sinking in.
Front sleepers
The firm feel and independently moving springs help stop the midsection dipping too far, so lying face down should feel level and supported.
Heavier sleepers
Two spring layers, 1,000 Posturepocket springs above 800 mini pocket springs, give a firm and adaptive base that should resist sagging under more weight.
Couples
Because each pocket spring moves independently, one person's movements are less likely to carry across the bed, and the firm surface suits partners who both want a firm feel.
This is a firm mattress, so lightweight side sleepers are likely to find it too hard for comfortable pressure relief at the shoulder and hip. It's also currently listed in UK King only, and it's a poor fit for anyone shopping to a tighter budget or wanting a softer, more cradling feel.
Save on an earlier or ex-display model
Some retailers still sell the earlier version of this mattress, or ex-display and returned stock at a lower price. These are the sizes where it costs less than the current model's best price.
Relyon Memory Plus 1800 Pocket Mattress
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FAQ's
How firm is the Relyon Memory Plus 1800 Pocket mattress?
It's rated firm. The 4.5cm memory foam top layer takes a little edge off the initial feel, but this is a supportive, firmer bed overall. It suits back and front sleepers and those who prefer a solid surface, rather than anyone wanting a soft, sinking feel.
How many springs does the Relyon Memory Plus 1800 have?
1,800 in total: 1,000 Posturepocket springs providing the main support, plus a layer of 800 mini pocket springs beneath that responds to your body shape and movement. Each spring moves independently, which helps reduce the ripple effect when a partner shifts in the night.
Does the Relyon Memory Plus 1800 come with a trial?
Mattress Online lists a 100-night trial with this mattress, though the trial requires you to buy a mattress protector from them. That trial is the retailer's own offer rather than a Relyon policy, so if you buy elsewhere the terms may differ. Check before you order.
What guarantee does the Relyon Memory Plus 1800 have?
The Mattress Online listing shows an 8-year guarantee. As this appears on a retailer listing rather than Relyon's own site, confirm the guarantee terms with whichever retailer you buy from.
How deep is the Relyon Memory Plus 1800 mattress?
It's 31cm deep, which is a substantial build. It's a hybrid of memory foam over two pocket spring layers, so check your fitted sheets are deep enough, as standard sheets can struggle with mattresses of this depth.
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