Comparison

Best gel mattresses

A gel mattress has gel-infused foam in its comfort layer to draw heat away from your skin, but how cool you sleep all night depends just as much on what sits under that layer and how firmly it holds you. We compare gel memory foam and gel hybrid mattresses sold in UK sizes on where the gel sits, the support underneath, firmness, trial and guarantee terms and the price of a UK double, so you can choose the right gel mattress for how you sleep.

9 Products compared
up to 100 trial nights
13/10/2026 Updated
Paata Updated 13 October 2026
Best gel mattresses: gel memory foam and hybrids reviewed and compared

Ranking

Best gel mattresses: every pick reviewed

John Lewis CloudGel 3000 Pocket Spring Mattress
John Lewis CloudGel 3000 Pocket Spring MattressJohn Lewis CloudGel 3000 Pocket Spring MattressJohn Lewis CloudGel 3000 Pocket Spring Mattress
Best overall

John Lewis CloudGel 3000 Pocket Spring Mattress

The John Lewis CloudGel 3000 is the gel mattress we would buy for most UK bedrooms. Its gel-infused CloudGel foam is zoned in three, firmer under the hips and softer at the shoulders and legs, and it sits over 2,772 springs in a double, which lets heat escape and makes it easy to turn over.

A double costs £1,299 with a 7-year guarantee. The 60-night trial is an exchange for another John Lewis model, and you need to buy a mattress protector in the same order.

Pros
  • Zoned gel foam, firmer under the hips
  • 2,772 springs in a double
  • Knitted bamboo cover
  • Rated for users up to 127kg
Cons
  • Rotate weekly for the first three months
  • Standard delivery costs £19.95
More product details
Material
CloudGel gel-infused foam with TriZone zoning, a layer of mini pocket springs, high-density polyester layers and a pocket spring unit (2,772 springs in total in a Double), knitted bamboo-blend cover.
Height
27 cm
Made in
United Kingdom
8.0/10 Very good
from £1,099
View offer → Read the review
  • Sleep trial: 60 nights
  • Warranty: 7 years
  • Firmness: Medium
Silentnight UltraGel 1000 Pocket Mattress
Silentnight UltraGel 1000 Pocket MattressSilentnight UltraGel 1000 Pocket MattressSilentnight UltraGel 1000 Pocket Mattress
Best value

Silentnight UltraGel 1000 Pocket Mattress

The Silentnight UltraGel 1000 gives you a gel-infused comfort layer over 1,000 Mirapocket springs, handmade in the UK, for far less than most of the gel hybrids here. Its medium-firm feel suits most back and front sleepers.

You give up the thicker cushioning and mini-spring layer of Silentnight's 3000 models. In return, a double is £629, you get 60 nights to try it, and the 5-year guarantee becomes 15 years if you register the mattress within three months.

Pros
  • Gel-infused layer over pocket springs
  • Handmade in the UK
  • 60-night sleep trial
  • Medium-firm feel suits most back sleepers
Cons
  • One medium-firm feel only
  • Less cushioning than the 3000 models
  • Delivery takes about 14 days
More product details
Material
UltraGel gel-infused comfort layer with breathable foam over 1,000 Mirapocket pocket springs with a firmer centre, in a quilted cover with side handles.
Height
28 cm
Made in
United Kingdom
Live Silentnight: 25% off dual climate mattress with code View offer
7.7/10 Very good
from £479
View offer → Read the review
  • Sleep trial: 60 nights
  • Warranty: 5 years
  • Firmness: Medium firm
Sleepeezee Cool Refresh 3200 Pocket Pillow Top Mattress
Sleepeezee Cool Refresh 3200 Pocket Pillow Top MattressSleepeezee Cool Refresh 3200 Pocket Pillow Top MattressSleepeezee Cool Refresh 3200 Pocket Pillow Top Mattress
Best cooling pick

Sleepeezee Cool Refresh 3200 Pocket Pillow Top Mattress

If you sleep on your side and run warm, start with the Sleepeezee Cool Refresh 3200, which Sleepeezee calls its most complete cooling mattress. A cool-touch pillow top covers 2cm of StayCool gel foam and 2,000 mini pocket springs, with 1,200 traditional springs below in a king, and the medium-soft feel lets shoulders and hips sink in.

Expect to pay £1,049 for a double at Mattress Online. The 10-year guarantee is generous, and the 100-night trial is an exchange that starts after 30 nights and needs a protector bought with the mattress.

Pros
  • Cool-touch cover over 2cm gel foam
  • Medium-soft pillow top for shoulders
  • 3,200 springs in a king
  • 10-year guarantee
Cons
  • Too soft for most front sleepers
  • No small double at Mattress Online
  • Single costs the same as a double
More product details
Material
Cool-touch pillow top cover over a soft polyester layer, 2cm StayCool gel, comfort foam and 2,000 mini pocket springs, a high-density support layer and 1,200 traditional pocket springs with calibre edge support (counts for a king).
Height
30 cm
Made in
United Kingdom
7.9/10 Very good
from £1,049
View offer → Read the review
  • Sleep trial: 100 nights
  • Warranty: 10 years
  • Firmness: Medium soft
iGel NanoTech 3000i
iGel NanoTech 3000iiGel NanoTech 3000iiGel NanoTech 3000i
Best choice of firmness

iGel NanoTech 3000i

Soft, medium and firm versions at one price make the iGel NanoTech 3000i the easiest gel hybrid to get right if you are unsure what feel you need. Under a quilted cover with TENCEL fibres sit 40mm of graphene-infused NanoTech foam and iGel foam with gel crystals, over 3,000 springs in two layers.

Bensons for Beds, the only seller of iGel mattresses, lists a double at £1,349.99. It offers no sleep trial, only a paid exchange, so try the three feels in one of its stores before you order.

Pros
  • Soft, medium or firm at one price
  • Gel crystals plus graphene-infused foam
  • AdvantEdge edge support
  • All three feels on show in Bensons stores
Cons
  • No sleep trial, paid exchange only
  • Sold only through Bensons for Beds
More product details
Material
3,000 dual-layer pocket springs (mini springs over full-height springs), 40mm iGel NanoTech graphene foam, iGel foam with gel crystals, AdvantEdge edge support, supersoft quilted cover with TENCEL fibres.
Height
31 cm
7.9/10 Very good
from £1,199.99
View offer → Read the review
  • Warranty: 10 years
  • Firmness: Soft / Medium / Firm
Silentnight UltraGel Cool-to-touch 3000
Silentnight UltraGel Cool-to-touch 3000Silentnight UltraGel Cool-to-touch 3000Silentnight UltraGel Cool-to-touch 3000
Best firm option

Silentnight UltraGel Cool-to-touch 3000

At 37cm, the Silentnight UltraGel Cool-to-touch 3000 is the deepest mattress on this page, with 2,000 Mirapocket springs and 1,000 mini springs under the UltraGel layer and a cool-to-touch fabric on top. Silentnight sells it in soft or firm for the same £1,029 double price, and the firm version suits back and front sleepers who want firm support that keeps them on top of the mattress.

Check your fitted sheets before ordering, because a 37cm mattress needs an extra-deep pocket.

Pros
  • Firm version for back and front sleepers
  • Cool-to-touch surface fabric
  • Soft version at the same price
  • Deepest mattress here at 37cm
Cons
  • Needs extra-deep fitted sheets
  • Costs far more than the UltraGel 1000
More product details
Material
2,000 Mirapocket pocket springs plus 1,000 mini springs, a gel-infused UltraGel comfort layer with breathable foam, a boxtop layer and a cool-to-touch surface fabric.
Height
37 cm
Made in
United Kingdom
Live Silentnight: 25% off dual climate mattress with code View offer
7.9/10 Very good
from £789
View offer → Read the review
  • Sleep trial: 60 nights
  • Warranty: 5 years
  • Firmness: Firm
Sleepeezee Jessica 1800 Pocket Gel Mattress
Sleepeezee Jessica 1800 Pocket Gel MattressSleepeezee Jessica 1800 Pocket Gel MattressSleepeezee Jessica 1800 Pocket Gel Mattress
Best for memory foam fans

Sleepeezee Jessica 1800 Pocket Gel Mattress

Most gel mattresses here use springy gel foam, while the Sleepeezee Jessica 1800 Pocket Gel adds the slow hug of real memory foam, 3cm of it laid over 3cm of StayCool gel foam. Underneath, 1,000 SoftTech mini springs and 800 pocket springs stop it feeling sunk-in, and the medium feel suits back and side sleepers alike.

At £999 for a double from Mattress Online, it is the pick for memory foam fans who still want springs underneath.

Pros
  • Memory foam hug with gel foam below
  • Medium feel for back or side
  • Foam-encapsulated edges
Cons
  • Memory foam on top feels warmer
  • Sold through retailers, not Sleepeezee direct
More product details
Material
Quilted knitted cover, white fibre support layer, 3cm memory foam and 3cm StayCool gel foam over 1,000 SoftTech mini pocket springs and 800 traditional pocket springs, with full foam edge encapsulation.
Height
27 cm
Made in
United Kingdom
7.7/10 Very good
from £749
View offer → Read the review
  • Sleep trial: 100 nights
  • Warranty: 10 years
  • Firmness: Medium
TheraPur ActiGel Polar 1000
TheraPur ActiGel Polar 1000TheraPur ActiGel Polar 1000TheraPur ActiGel Polar 1000
Best for trying in store

TheraPur ActiGel Polar 1000

Dreams is the only seller of the TheraPur ActiGel Polar 1000, so you can lie on one in a Dreams store before you pay. ActiGel foam and Platinum 3D comfort foam sit over about 858 pocket springs in a double, under a knitted ActiCool cover, at 22cm deep. It is one of the cheaper hybrids here at £599 for a double, so weigh that against a 1-year guarantee and a comfort exchange that carries a £95 fee.

Pros
  • Try it in a Dreams store first
  • ActiGel foam under an ActiCool cover
  • Cheaper than most hybrids here
Cons
  • Only a 1-year guarantee
  • Comfort exchange costs £95
  • Single, double and king only
More product details
Material
Up to 1,000 individually wrapped pocket springs (king), Platinum 3D comfort foam, 6cm ActiGel foam, recyclable I-Fibre and PurFibre fillings, knitted ActiCool cover, eco polyester base layer.
Height
22 cm
Made in
United Kingdom
7.4/10 Good
from £499
View offer → Read the review
  • Warranty: 1 year
  • Firmness: Medium
Soak&Sleep Cooling Memory Foam Mattress
Soak&Sleep Cooling Memory Foam MattressSoak&Sleep Cooling Memory Foam MattressSoak&Sleep Cooling Memory Foam Mattress
Best budget pick

Soak&Sleep Cooling Memory Foam Mattress

For the lowest double price on gel memory foam, choose the Soak&Sleep Cooling Memory Foam Mattress, a 22cm all-foam build with a gel-infused top layer over 5cm of memory foam and 15cm of base foam. A double lists at £315, and Soak&Sleep was taking 20% off it in October 2026. You also get a 100-night trial after a 30-night minimum.

Being all foam, it absorbs a partner's movement well but lets less air through than the spring models above it.

Pros
  • Gel-infused top over 5cm memory foam
  • 100-night trial
  • All foam, so little motion transfer
Cons
  • Double, king and super king only
  • Warmer than a spring hybrid
More product details
Material
Gel-infused quilted comfort layer, 5cm memory foam, 15cm base foam. Quilted jersey polyester zip cover. No-turn, delivered rolled. 22cm deep.
Height
22 cm
Made in
China
Certificates
CertiPUR, OEKO-TEX
7.4/10 Good
from £315
View offer → Read the review
  • Sleep trial: 100 nights
  • Warranty: 10 years
  • Firmness: Medium firm
  • Certificates CertiPURCertiPUROEKO-TEXOEKO-TEX
Aspire Cool Blue Relief
Best British-made all-foam

Aspire Cool Blue Relief

Made to order in the UK, the Aspire Cool Blue Relief is a 20cm all-foam mattress topped with 1cm of cool blue gel memory foam, which Aspire says disperses heat up to five times faster than standard memory foam. With 8cm of reflex foam and 10cm of recycled foam under that thin layer, it feels medium-firm and supportive, a better match for back sleepers than side sleepers.

Aspire charges £425 for a double, delivered free to the UK mainland. The trade-off is a 1-year warranty and no return once the hygiene seal is broken, so be sure of the medium-firm feel before you order.

Pros
  • Made to order in the UK
  • Zoned, medium-firm foam support
  • Zip cover Aspire says is washable
  • Free UK mainland delivery, rolled
Cons
  • Gel memory foam layer is only 1cm
  • 1-year warranty, no sleep trial
More product details
Material
Removable, washable quilted zip cover; 1cm cool blue gel memory foam (60kg per cubic metre, per Aspire); 8cm high-density reflex foam; 10cm recycled eco support foam. Zoned, single-sided, delivered rolled.
Height
20 cm
Made in
United Kingdom
7.1/10 Good
from £300
View offer → Ad Read the review
  • Warranty: 1 year
  • Firmness: Medium firm

Buying advice

What to look for when buying

“If you run hot, choose pocket springs and a breathable cover first and treat the gel as a bonus, because the springs and cover keep moving heat away after a gel layer has warmed to your body.”

The ranked gel mattresses side by side

Mattress Build Where the gel is Depth Maker’s firmness Trial Guarantee Double (135x190)
John Lewis CloudGel 3000 Hybrid, 2,772 springs in a double Zoned CloudGel foam layer 27cm Medium 60-night exchange 7 years £1,299
Silentnight UltraGel 1000 Hybrid, 1,000 Mirapocket springs UltraGel comfort layer 28cm Medium-firm 60 nights 5 years, 15 if registered £629
Sleepeezee Cool Refresh 3200 Pillow top hybrid, 3,200 springs in a king 2cm StayCool gel foam 30cm Medium-soft 100-night exchange 10 years £1,049
iGel NanoTech 3000i Hybrid, 3,000 springs in two layers iGel foam with gel crystals, 40mm graphene foam 31cm Soft, medium or firm Paid exchange only 10 years £1,349.99
Silentnight UltraGel Cool-to-touch 3000 Hybrid, 2,000 Mirapocket and 1,000 mini springs UltraGel layer under a cool-touch fabric 37cm Soft or firm 60 nights 5 years, 15 if registered £1,029
Sleepeezee Jessica 1800 Pocket Gel Hybrid, 1,800 springs in two layers 3cm StayCool gel foam under 3cm memory foam 27cm Medium 100-night exchange 10 years £999
TheraPur ActiGel Polar 1000 Hybrid, about 858 springs in a double ActiGel foam layer 22cm Medium Paid exchange 1 year £599
Soak&Sleep Cooling Memory Foam All foam Gel-infused top layer over 5cm memory foam 22cm Medium-firm 100 nights 10 years £315
Aspire Cool Blue Relief All foam 1cm cool blue gel memory foam 20cm Medium-firm None 1 year £425

What the gel actually does

A gel mattress feels cool when you lie down and stays a little cooler for a while, but on its own it will not keep you cool all night. Gel soaks up heat, so the surface warms more slowly, and most UK gel mattresses carry gel in a foam layer only a few centimetres deep, which settles at body temperature once it has absorbed what it can. The effect itself is real: in a 2018 study in Physiology & Behavior, a mattress built for high heat capacity kept its surface up to 6.12°C cooler than a conventional one and increased deep sleep by 16% in 15 young men.

If you overheat badly, give the springs and cover under the gel as much weight as the gel itself.

Gel memory foam or a gel hybrid?

A gel memory foam mattress is all foam, with gel mixed into the memory foam or the foam above it. It absorbs a partner’s movement well and usually costs less, as the Soak&Sleep and Aspire show, but a solid foam core lets less air through than springs, and Soak&Sleep’s own product FAQ says pocket-sprung mattresses with natural fibres regulate temperature better. A gel hybrid puts the gel foam over pocket springs, so air can move through the core, which is why most mattresses here are hybrids. Our best memory foam mattresses ranking covers memory foam without gel, the best hybrid mattresses page covers springs with every kind of comfort layer, and our best mattresses of 2026 ranks every construction together.

Firmness for how you sleep

Gel affects how warm the surface feels, and firmness is a separate choice, so pick the firmness for your sleeping position first. Side sleepers need give at the shoulder and hip, which points to a softer top such as the medium-soft Sleepeezee Cool Refresh 3200 or the soft version of the iGel NanoTech 3000i, and our best mattresses for side sleepers ranking goes further on shoulder pressure. Back and front sleepers usually do best on medium to medium-firm. If you are heavier, check the maker’s weight limit. John Lewis, for example, rates the CloudGel 3000 for users up to 127kg.

Keeping cool beyond the mattress

The bedroom matters as much as the mattress. The Sleep Charity puts the ideal bedroom temperature at around 16 to 18°C and warns on its sleep environment page that “Temperatures over 24°C (71°F) are likely to cause restlessness, while a cold room of about 12°C (53°F) will make it difficult to drop off.” A thin, breathable mattress protector and cotton bedding let a gel mattress do its job, while a thick waterproof protector puts an insulating layer between you and the gel. If your current mattress still supports you well, a gel mattress topper adds a cooler surface for far less money, and a soft topper eases a bed that feels too hard.

Trials and guarantees

Read the trial terms before you compare prices. Several of these mattresses come from one retailer only, the iGel from Bensons for Beds, the TheraPur from Dreams and the CloudGel from John Lewis. Their exchange terms let you swap the mattress for another model, often with a mattress protector to buy or a fee to pay, and none of the three refunds you for a change of mind once you have slept on it.

Which gel mattress for which sleeper

If you are Start with Why
Looking for one safe choice for most sleepers John Lewis CloudGel 3000 Zoned gel foam, 7-year guarantee
On a mid-range budget Silentnight UltraGel 1000 Gel layer and pocket springs for £629 in a double
A warm side sleeper Sleepeezee Cool Refresh 3200 Medium-soft pillow top with a cool-touch cover
Unsure which firmness you need iGel NanoTech 3000i Soft, medium and firm at one price
A back or front sleeper who likes a firm bed Silentnight UltraGel Cool-to-touch 3000 Firm version, 37cm deep
A memory foam fan Sleepeezee Jessica 1800 Pocket Gel Memory foam on top of the gel layer
Keen to try a mattress in a shop first TheraPur ActiGel Polar 1000 Sold in Dreams stores
On a tight budget Soak&Sleep Cooling Memory Foam Lowest double price here, 100-night trial
Looking for a British-made foam mattress Aspire Cool Blue Relief Made to order in the UK, delivered rolled

Methodology

How we rate

Every mattress on this page has gel in its comfort layer, as gel-infused memory foam, gel foam or gel crystals in the foam, confirmed on the seller’s UK product page. Each gets four sub-scores out of 100 (comfort, support, temperature and value) and an overall score that weights them at 30%, 25%, 15% and 30%, with a small adjustment for the brand’s standing in the UK market.

What decides the order

  • Overall score first. Where two mattresses tie, the one with the higher temperature score goes first, as keeping cool is the subject of this page.
  • One value exception. The Silentnight UltraGel 1000 ranks second on 7.7, above three mattresses on 7.9, because its double costs roughly half to two-thirds as much as theirs.
  • What sits under the gel. Pocket and mini springs let air move through the mattress, a breathable or cool-touch cover changes the first feel, and a deep all-foam build holds more warmth, so the temperature score credits the whole build as well as the gel.
  • Firmness. Medium to medium-firm scores best for support, in line with a 2015 systematic review of 24 controlled trials in Sleep Health (Radwan et al.).
  • Terms and price. Trial nights, whether a trial is a refund or an exchange, guarantee years, depths, firmness and the price of a UK double (135x190), all read on the makers’ and sellers’ pages on 13 October 2026.

Quick overview

All products compared

All Mattresses
# Product Our verdict Material Firmness Sleep trial Warranty Rating Price
1 John Lewis John Lewis CloudGel 3000 Pocket Spring Mattress Best for most sleepers CloudGel gel-infused foam with TriZone zoning, a layer of mini pocket springs, high-density polyester layers and a pocket spring unit (2,772 springs in total in a Double), knitted bamboo-blend cover. Medium 60 nights 7 yrs 8.0 from £1,099 Offer
2 Silentnight Silentnight UltraGel 1000 Pocket Mattress Best mid-range pick UltraGel gel-infused comfort layer with breathable foam over 1,000 Mirapocket pocket springs with a firmer centre, in a quilted cover with side handles. Medium firm 60 nights 5 yrs 7.7 from £479 Offer
3 Sleepeezee Sleepeezee Cool Refresh 3200 Pocket Pillow Top Mattress Best for side sleepers Cool-touch pillow top cover over a soft polyester layer, 2cm StayCool gel, comfort foam and 2,000 mini pocket springs, a high-density support layer and 1,200 traditional pocket springs with calibre edge support (counts for a king). Medium soft 100 nights 10 yrs 7.9 from £1,049 Offer
4 iGel iGel NanoTech 3000i Best choice of firmness 3,000 dual-layer pocket springs (mini springs over full-height springs), 40mm iGel NanoTech graphene foam, iGel foam with gel crystals, AdvantEdge edge support, supersoft quilted cover with TENCEL fibres. Soft / Medium / Firm – 10 yrs 7.9 from £1,199.99 Offer
5 Silentnight Silentnight UltraGel Cool-to-touch 3000 Best firm option 2,000 Mirapocket pocket springs plus 1,000 mini springs, a gel-infused UltraGel comfort layer with breathable foam, a boxtop layer and a cool-to-touch surface fabric. Firm 60 nights 5 yrs 7.9 from £789 Offer
6 Sleepeezee Sleepeezee Jessica 1800 Pocket Gel Mattress Best for memory foam fans Quilted knitted cover, white fibre support layer, 3cm memory foam and 3cm StayCool gel foam over 1,000 SoftTech mini pocket springs and 800 traditional pocket springs, with full foam edge encapsulation. Medium 100 nights 10 yrs 7.7 from £749 Offer
7 TheraPur TheraPur ActiGel Polar 1000 Best for trying in store Up to 1,000 individually wrapped pocket springs (king), Platinum 3D comfort foam, 6cm ActiGel foam, recyclable I-Fibre and PurFibre fillings, knitted ActiCool cover, eco polyester base layer. Medium – 1 yr 7.4 from £499 Offer
8 Soak&Sleep Soak&Sleep Cooling Memory Foam Mattress Best budget pick Gel-infused quilted comfort layer, 5cm memory foam, 15cm base foam. Quilted jersey polyester zip cover. No-turn, delivered rolled. 22cm deep. Medium firm 100 nights 10 yrs 7.4 from £315 Offer
9 Aspire Aspire Cool Blue Relief Best British-made all-foam Removable, washable quilted zip cover; 1cm cool blue gel memory foam (60kg per cubic metre, per Aspire); 8cm high-density reflex foam; 10cm recycled eco support foam. Zoned, single-sided, delivered rolled. Medium firm – 1 yr 7.1 from £300 Offer

Checked automatically

Discounts & offers

All offers
Brand Current promotion Discount code Benefit
Silentnight 25% off dual climate mattress with code – – View offer

FAQ

Frequently asked questions

What is the best gel mattress in the UK?

The John Lewis CloudGel 3000 is our best gel mattress for most UK sleepers, a 27cm hybrid with zoned gel-infused foam over 2,772 springs, priced at £1,299 for a double. For less money, the Silentnight UltraGel 1000 pairs a gel comfort layer with 1,000 pocket springs at £629.

Do gel mattresses really keep you cool?

They feel cooler at first because gel absorbs heat, and a 2018 lab study found a high heat capacity mattress kept its surface up to 6.12°C cooler and deepened sleep. A thin gel layer warms to your body over the night, so pocket springs, a breathable cover and a bedroom at 16 to 18°C do more to keep you cool until morning.

What is the difference between gel memory foam and memory foam?

Gel memory foam is memory foam with gel beads, particles or swirls mixed in to draw heat away, and the slow, contouring feel stays the same. Makers claim big gains: Silentnight, for example, says its UltraGel foam is five times more breathable than standard memory foam, so treat such figures as the maker's own. If you love memory foam but sleep warm, the gel version is the better buy, and our memory foam mattress ranking covers the rest.

Which gel mattress should I choose for my sleeping position?

Side sleepers should start with a softer top such as the medium-soft Sleepeezee Cool Refresh 3200, while back and front sleepers usually suit a medium to medium-firm model such as the John Lewis CloudGel 3000 or the Silentnight UltraGel 1000. If you are unsure, the iGel NanoTech 3000i is sold in soft, medium and firm at the same price.

Are gel mattresses good for back pain?

The gel itself does little for back pain, because support comes from firmness and the layers underneath. A systematic review of 24 trials in Sleep Health (2015) found medium-firm mattresses best for comfort, sleep quality and spinal alignment, so choose a medium-firm gel model such as the Silentnight UltraGel 1000. If the pain lasts, see your GP.

Can I buy a gel mattress in a king size?

Yes, every mattress in this ranking is sold in a UK king (150x200), and the cheapest king here is the Soak&Sleep Cooling Memory Foam at £355.

How long does a gel mattress last?

Bed Advice UK, run by the National Bed Federation, says sleep experts recommend a new mattress every seven years, and that applies to gel models too. Guarantees in this ranking run from 1 year on the Aspire Cool Blue Relief and TheraPur ActiGel Polar 1000 to 10 years on the Sleepeezee, iGel and Soak&Sleep models, and Silentnight extends its standard 5 years to 15 if you register within three months.

More comparisons

Mattresses compared

All Mattresses comparisons

9 products compared Ranking · Updated 13/10/2026

Best hotel mattresses

A hotel bed feels good for three reasons you can copy at home: a medium feel that suits most sleepers, a cushioned top over pocket springs …

10 products compared Ranking · Updated 28/09/2026

Best mattresses 2026

The best mattress for most UK sleepers is a medium-firm model that keeps your spine aligned in your usual sleeping position, stays cool through the night …

9 products compared Ranking · Updated 28/09/2026

Best Simba mattresses

Choosing the best Simba mattress comes down to three differences inside one UK range: how deep and how heavily sprung the model is, whether its comfort …

10 products compared Ranking · Updated 28/09/2026

Best foam mattresses

The best foam mattress is an all-foam build that stays cool enough for you, sits close to medium-firm and comes with a trial long enough to …

8 products compared Ranking · Updated 28/09/2026

Best Silentnight mattresses

The best Silentnight mattress is the model whose support system and comfort layer suit the way you sleep, because the brand builds its range in distinct …

10 products compared Ranking · Updated 28/09/2026

Best air mattresses

The best air mattress for a spare room is a raised bed with a built-in mains pump, while a camping air bed needs a pump that …