Firm Standard King Size Mattresses

Kingsize (5')

Our Ultra 40 HD Orthopaedic luxury mattresses are made using a combination of our highest-grade ultra-dense 40 HD blue foam and our innovative and responsive memory foam. Our ultra-dense foam, constructed using a close cell formation, produces one of the firmest mattresses available on the market, ensuring maximum support throughout the night and gently supporting your back and joints to minimise aches and pains. The extra-firm support distributes your body weight to alleviate stress on the spine, relieving painful pressure points and helping to maintain the natural alignment of your spine. Added to this is a top layer of our advanced memory foam, which reacts to your body heat, cleverly moulding to your unique body shape to help distribute your weight evenly across the mattress. This provides optimal support and relief to your pressure points to give you the most comfortable sleep possible. These mattresses are particularly helpful for people with back aches and pains, as the soft surface helps keep your spine perfectly aligned. Coupled up with our multi-layered quilted cover, constructed using 4 different layers, a flexible fine mesh breathable fabric that allows trapped body heat within the foam to escape, aiding in cooling the body, a layer of generously padded soft micro fibres to enhance the overall softness and comfort provided by the mattress, a layer of micro mesh hi-flow fabric used to quickly dispel any excess heat present and layered on the base with our moisture resistant base fabric, this weaved fabric allows trapped moisture within the mattress to escape but won’t allow moisture to penetrate back in, this mattress is perfect for those looking for a genuine luxury ultra-firm orthopaedic product with the added advantage of memory foam. Comes with a unique 3D removable zip cover. Note: The outer cover design and colour may vary slightly from the picture, but the material and specifications will be the same.

I’m extremely pleased with this mattress. I’ve always slept on extra-firm mattresses, so I was slightly concerned that the memory foam layer on top might make it too soft. However, it exceeded my expectations. It remains very firm and offers excellent back support, while the subtle soft layer on top adds comfort. Overall, I’m very happy with it and would definitely say it lives up to the extra-firm standard.. Heller-kiss. Stevenage, GB. Fri Jan 30 2026

Kingsize (5')

Unlike an ordinary circular spring system, Miracoil's unique shape has twice as many springs offering improved pressure relief, edge-to-edge support for maximum sleep space, and zoned support right where you need it most. Featuring eco-comfort fibers, this mattress is good for you and good for the environment, as its comfort layer is made from 100% recyclable plastic bottles which offer breathability and enhanced comfort for a more refreshing night's sleep. Tried and tested Miracoil®'s spring system also has enhanced durability providing superior comfort over many years.

Lovely mattress, very comfortable would buy again. Kay. Swindon, GB. Mon Mar 02 2026

Kingsize (5')

Wake up refreshed and ready to go! The Silentnight Essentials Value Bonnell Mattress is built to support you from head to toe with its firm feel and open-coil spring system—323 springs working together to reduce partner disturbance so you both enjoy a peaceful night’s sleep. The soft damask cover with a quilted finish adds instant comfort, and soft hypoallergenic fillings evenly distributes your weight for gentle pressure relief and refreshing rest. Designed to last, this double-sided Microquilt mattress can be flipped and rotated regularly to keep it feeling fresh and supportive for longer. And with convenient rolled-up delivery, it’s easy to move through tight spaces or upstairs without the hassle of heavy lifting. Comfort, convenience, and long-lasting support—all delivered straight to your door. Ready to sleep better?

I was worried that this mattress would not be very good quality as it was cheap and came rolled, However it is very good quality and comfortable to sleep on. It is firm and sturdy and supports my larger weight well.. Kieran James. Silver End, Witham, GB. Fri Jul 22 2022

Kingsize (5'), Firm, 15

The orthopedic reflex foam mattress is a high-specification mattress made from super high-density reflex foam which is durable and supports the contours of your body. The mattress is made from the latest foam technology allowing a cool night's sleep with firm support.

amazing quality super soft and comfortable to sleep on. Anonymous. Tue May 05 2026

Kingsize (5')

Our Brick Hard foam mattress is great value for anyone who is looking for a firm mattress and does not like the feel or warmth associated with memory foam, or the bounce that comes from springs. Reflex foam is a non reacting foam and therefore provides great orthopaedic support to the body. All materials are hypoallergenic and sanitised - perfect for allergy sufferers. Also includes anti dust mite properties. This silent mattress is suitable for many bed types.

Just what I needed came quickly happy with purchase. Beryl. Church Minshull Nantwich, GB. Thu Apr 09 2026

Kingsize (5')

The Super Ortho Mattress is designed for sleepers who prefer an extra firm feel with superior orthopaedic support. Built with a 12.5g orthopaedic spring system, a compressed polyester layer, and a 25mm reflex foam layer, this mattress ensures optimal spinal alignment and pressure relief, reducing back discomfort for a restful sleep. Reflex foam is naturally hypoallergenic, offering a healthy weight distribution to promote better posture and support. Finished with a hand-tufted damask cover and a beautifully hand-stitched grey chenille border, this mattress combines comfort with a modern contemporary design. Strategically placed air vents encourage airflow, maintaining a cool and breathable sleep surface, while stitched handles allow for easy rotation to extend durability. Ideal for those who require firm back support, the Super Ortho Mattress delivers a high level of comfort, durability, and elegant craftsmanship, making it a perfect choice for a restorative night’s sleep.

Neil. Penzance, GB. Fri Dec 05 2025

Kingsize (5')

The Sterling mattress by Sealy offers the firmest feel in the Enhance collection, without compromising on that all-important comfort. Pocket springs offer a gentle level of support and work independently to respond to your body shape and create a personalised feel. The springs are sewn together in their own pockets to reduce movement and provide a refreshing nights sleep. Combined with our deepest layer of Geltex, which offers pressure relief to the areas of your body that need it most. Geltex is reactive to both shape and movement and offers breathability in abundance, allowing air to circulate through the mattress easily and regulating your temperature as you sleep. The Sterling mattress is single sided, and finished with a quilted surface for an added touch of luxury. All Sealy mattresses are hand-crafted in Britain and come with a 5 year guarantee for extra peace of mind. Firm, single sided mattress26cm depthAvailable in Single, Small Double, Double, King and Super king sizes.5 year guaranteeHandmade in the UK

Nice mattress. Firm and supportive with a nice soft and comfy top layer.. Anonymous. Fri Aug 15 2025

Kingsize (5')

Wake up refreshed and ready to go! The Silentnight Essentials Value Bonnell Mattress is built to support you from head to toe with its firm feel and open-coil spring system—323 springs working together to reduce partner disturbance so you both enjoy a peaceful night’s sleep. The soft damask cover with a quilted finish adds instant comfort, and soft hypoallergenic fillings evenly distributes your weight for gentle pressure relief and refreshing rest. Designed to last, this double-sided Microquilt mattress can be flipped and rotated regularly to keep it feeling fresh and supportive for longer. Comfort, convenience, and long-lasting support—all delivered straight to your door. Ready to sleep better?

THE MATTRESS WAS FOR OUR GRANDDAUGHTER , SHE SAID IT FITS HER BED PERFECTLY , IT IS VERY COMFORTABLE . WE WERE ABLE TO TRACT DELIVERY AND RECIEVED THE MATTRESS A FEW DAYS EARLY WHICH WAS PERFECT . THANKYOU .. Elaine. Barnsley, GB. Sun Feb 20 2022

Kingsize (5')

Not too soft and not too firm, the Stella offers medium to firm support, thanks to its mix of body-contouring springs and layers of luxury white fiber fillings.

Very comfortable and sturdy matter. Keep it in the box until you have it in the designated room, i unboxed and it took a few friends to cart it up the stairs. Helps me sleep like a log). Anonymous. Wed Dec 03 2025

Kingsize (5')

Boasting a traditional open coil spring system, this Silentnight Open Coil Ortho mattress offers comfort and support through the night. With sumptuous layers of foam fillings, this mattress is finished with hand tufting to provide a firmer feel and offer longer-lasting back support. Featuring a smooth damask mattress cover for added comfort. This mattress is designed for those who sleep on their stomach or back. Made in the UK by the UK's most trusted bed brand Silentnight.

Very comfy great for my back delivered quickly and conveniently. Alison. Sun Aug 17 2025

Kingsize (5')

The orthopedic reflex foam mattress is a high specification mattress made from super high-density reflex foam which is durable and supports the contours in your body. The mattress is made from the latest foam technology allowing a cool night's sleep with firm support.

Exactly what I needed. Good for posture maintenance. Enjoy a good night sleep and wake up feeling refreshed. Package was also delivered on time.. Olugbolahan. Sat Aug 26 2023

Kingsize (5' )

The Harmony Cool Deluxe Cooling Blue Memory Foam Mattress Provides A Medium Firmness Feel By Utilising A Unique 3 Foam Construction Combining Our Environmentally Friendly Eco Base Support Foam Topped With A High-Density Stability Support Foam And Finished With A Top Comfort Layer Of Open Cell Cooling & Breathable Cool Blue Gel Memory Foam. This Creates A Supremely Balanced & Extremely Comfortable All Foam Mattress Which Unlocks A Sublime Sleep Experience And A Long Lifespan.

Very satisfied , for my aching spine .. Anonymous. Thu Nov 28 2024

Kingsize (5')

Made from a layer of gel infused memory foam that provides a cooler and fresher sleeping experience. Along with a 5cm layer of firm recon foam and a base layer of super firm blue foam for extra support.

Kingsize (5')

Our budget Recon foam mattress is great value for anyone who is looking for a firm mattress and does not like the feel or warmth associated with memory foam, or the bounce that comes from springs. Recon foam is a non reacting foam and therefore provides great orthopaedic support to the body. All materials are hypoallergenic and sanitised - perfect for allergy sufferers. Also includes anti dust mite properties. This silent mattress is suitable for all bed types. Single sided mattress - please do not turn. Vacuum packed and rolled for easy delivery and transportation. Please note: once unrolled the mattress requires up to 72 hours to fully expand and reform to its original shape. This mattress is available in multiple sizes including: 3FT single, 4FT Small Double, 4FT6 Double, 5FT King.

Arrived super quickly, great quality for a very competitive price. If you're looking for a firm yet comfortable mattress this is it!. Claudia. London, GB. Sun Nov 03 2024

Kingsize (5')

This 800-pocket sprung mattress features 800 individually responsive pocket springs combined with foam fillings to ensure overall body support and comfort. Each spring responds separately to body weight to offer pressure relief, while the tufted finish gives a firmer feel and provides longer-lasting back support. Finished with a smooth damask mattress cover for added comfort as you sleep, this mattress is designed for those who sleep on their stomach or back. Made in the UK by the UK's most trusted bed brand, Silentnight.

Good mattress very pleased.. Yasmin. Sun Jan 25 2026

Kingsize (5')

Our budget Recon foam mattress is great value for anyone who is looking for a firm mattress and does not like the feel or warmth associated with memory foam, or the bounce that comes from springs. Recon foam is a non reacting foam and therefore provides great orthopaedic support to the body. This silent mattress is suitable for all bed types. Single sided mattress - please do not turn. Vacuum packed and rolled for easy delivery and transportation. Please note: once unrolled the mattress requires up to 72 hours to fully expand and reform to its original shape. The additives used in the manufacturing of foam may give rise to a slight odour. If this should occur, please remove all packaging and store in a well ventilated room for 48 hours. The odour is safe and will dissipate overtime.

Kingsize (5')

Enjoy exceptional support and a restful sleep with this mattress, featuring hypoallergenic fibre fillings for a healthier night’s rest. The 12.5 gauge open coil spring unit offers reliable, firm support, while the extra firm tension is perfect for those who prefer a sturdier feel. With a 26cm depth, this double-sided mattress can be easily flipped and rotated to ensure long-lasting comfort and durability.

Kingsize (5')

Our luxurious handmade open coil orthopaedic memory mattress is the epitome of luxury. Made by our skilled craftsmen we have been manufacturing quality mattresses since 2005 so we're sure you'll love this one!

Very thick, very firm matress, great for my bad back! Sleeping very well!. Anonymous. Fri Jun 14 2024

Kingsize (5')

This Bonnell spring mattress is perfectly designed for extreme comfort with a stunning simplistic finish

Yvonne. Arnold Nottingham, GB. Thu Dec 05 2024

Kingsize (5')

Our luxurious handmade open-coil orthopaedic memory mattress is the epitome of luxury. Made by our skilled craftsmen we have been manufacturing quality mattresses since 2005 so we're sure you'll love this one!

Very good Mattress, exactly what we needed. M. Crawley, GB. Thu Jan 02 2025

Kingsize (5')

Our luxurious handmade open-coil orthopaedic memory mattress is the epitome of luxury. Made by our skilled craftsmen we have been manufacturing quality mattresses since 2005 so we're sure you'll love this one!

Kingsize (5')

A reversible all foam mattress with one side super firm and the other side regular comfort, simply flip the mattress to reveal your prefered comfort. Complete with a soft quilted fabric cover.

Kingsize (5')

Our luxurious handmade open coil orthopaedic memory mattress is the epitome of luxury. Made by our skilled craftsmen we have been manufacturing quality mattresses since 2005 so we're sure you'll love this one!

Great mattress, firm and comfy right all the way to the edges! Highly recommended. Anonymous. Fri Jan 10 2025

Kingsize (5')

Our luxurious handmade open-coil orthopaedic memory mattress is the epitome of luxury. Made by our skilled craftsmen we have been manufacturing quality mattresses since 2005 so we're sure you'll love this one!

Have ordered 2 for my sons, they are very happy as it guves good suppoet for a bad back. Im 5hinking to order for my bed as well. Olena. Mon Jul 01 2024

Kingsize (5')

This firmer tension mattress features two distinct spring units, complemented by additional comfort layers to provide unparalleled support without sacrificing quality. The extra fine micro e-Pocketsprings operate independently, swiftly adapting to even the slightest of movements, while the deep e-Pocketcore seamlessly conforms to your body's natural contours, effectively minimising motion transfer throughout the mattress. Providing a firmer foundation for a good night’s sleep the comfort technologies found in this new Jay-BeFirm Hybrid 2000 e-PocketEco Friendly TRUECOREMattress creates a healthy restful environment so you can wake up feeling revived and ready to do great things. This multi layered mattress combines two springs units with additional comfort layers offering the best support without any compromise. The extra fine micro e-Pocketsprings work independently and respond to the gentlest of movements whilst the firm deep e-Pocket core moulds to your body's contours, preventing any transfer of movement [roll together] across the mattress for an undisturbed night’s sleep. In addition the mattresses multiple breathable e-Fibre comfort layers allow air to flow freely, reducing heat and moisture build up and creating a healthier and fresher sleep environment. This Eco-Friendly e-Pocket Mattresses features sustainable materials that are 100% foam free, great to sleep on and even kinder to the planet. Made from recycled materials, you can sleep well knowing you are contributing to help combat climate change as they feature Eco award winning Advance e-Fibrewhich not only has superior moisture wicking abilities, but is also proven to offer significant environmental benefits including: 90% Less CO2 emissions 99% Less water used 99% Reduced land use Statistics are based on the life cycle analysis of Advance e-Fibre when compared to cotton. Results verified by an independent body. Further contributing to a more sustainable future the e-Fibre comfort layers found in this mattress are made from 100% recyclable plastic bottles, diverting over 100 million from going into landfill or our oceans and by choosing this mattress you are helping to prevent even more! A 100% recyclable mattress the Micro e-Pocket Springs, are sonic welded fabric pockets which remove the need for glue, making them easier to recycle at end of life. For complete quality assurance all Jay-Be TRUECORE mattresses are backed by a five-year manufacturer’s guarantee.

Perfect lovely mattress. Kathy. Trumpington Cambridge, GB. Sat Oct 25 2025

Kingsize (5')

Our luxurious handmade open coil orthopaedic memory mattress is the epitome of luxury. Made by our skilled craftsmen we have been manufacturing quality mattresses since 2005 so we're sure you'll love this one!

Incredibly comfortable, felt like a hotel mattress!!. Yasmine. Sun Dec 29 2024

Kingsize (5')

Our luxurious handmade open coil orthopaedic memory mattress is the epitome of luxury. Made by our skilled craftsmen we have been manufacturing quality mattresses since 2005 so we're sure you'll love this one!

Kingsize (5')

The encapsulated 1000 pocket sprung mattress features 1000 individually wrapped springs inserted inside a box of foam rather than the steel wiring which is used around traditional pocket sprung mattresses. If you’re after a pure foam mattress but want the support of springs then this mattress is perfect using minimal springs covered in foam, it will offer the best support.

Kingsize (5')

Our luxurious handmade open coil orthopaedic memory mattress is the epitome of luxury. Made by our skilled craftsmen we have been manufacturing quality mattresses since 2005 so we're sure you'll love this one!

Kingsize (5')

Our best-selling mattress is for all those looking for a perfect night's sleep. This 15cm deep foam mattress provides excellent orthopedic support. Made for the whole family and all sleeping styles. Moulds to your body shape, relieves pressure, and provides comfort by distributing body weight evenly. This is a medium firm mattress, providing the support where you need it the most. Designed with a 2.5cm layer of 4th generation visco-elastic memory foam and a 13cm high density, high resilience durable foam core, it reduces motion transfer to your partner, while providing a comfortable sleep surface for all sleeping positions. The mattress has a non-slip base to keep it in place. Our Polyblend cover is micro-quilted polyester knitted (zip off and removable). Combined with open-cell memory foam it greatly improves air circulation to help regulate the body temperature at comfortable levels all night. It is hypoallergenic, anti-bacterial, and anti dust-mite. Delivered fast directly to your doorstep. Hygienically vacuumed packed which makes it super easy to take it to the room of your choice. Simply unwrap it and let it expand for 24-48* hours. Suitable for all types of standard bed bases and frames. Mattress must be unpacked within 7 days of delivery and left in an airy room before use *Colder temperature may extend the time needed to fully expand The White Noise story White Noise is a home-grown, family-run mattress manufacturer based in southwest England. We have been manufacturing much-loved mattresses for 12 years. Our aim has always been to improve the nation’s sleep health by creating great, comfortable mattresses without compromising on quality.

Good quality and comfortable mattress, good for back pain, its firmness provides extra firm quality. Anonymous. Wed Aug 20 2025

Kingsize (5')

Achieve a great night's sleep with this extremely comfortable mattress. Complete with anti-dust mite, anti-bacterial and anti-microbial properties, as well as a moisture-managing system ensuring the ultimate fresh sleeping environment to encourage a great night's sleep. Featuring a high count of individual springs for a comfortable sleep through the night, the individual pocket springs respond to body weight across the mattress and provide zoned support where you need it most. Multiple layers of sumptuous fillings topped off with a layer of high-density memory foam, this mattress is guaranteed to give you a great night's sleep. Memory foam conforms to the contours of the body providing unbeatable support to where it is needed most. This is done by spreading your body weight out evenly over the surface of the mattress resulting in less pressure on key areas of the body such as the back and neck. Full support is provided from head to toe guaranteeing you a great night’s sleep The cover along with the fillings stops bacterial growth and any odors or mildew growth. Eliminating dust mites has a number of health benefactors such as reducing the risk of asthma and therefore maintaining a fresh and natural sleeping environment easing you into a gentle sleep. This mattress feature handles for ease of turning, and vents to allow air circulation to keep your mattress fresh.

So comfy. Anonymous. Fri Feb 20 2026

Kingsize (5')

The backcare mattress offers 18 cm of high-density reflex foam and provides ideal orthopedic support to those looking for a firm mattress. A thick layer of high-density reflex foam provides support spine and neck for a healthier and more comfortable night's sleep. This backcare mattress provides relaxation for back problems. This mattress is suitable for those who are looking for reliable mattresses manufactured in the UK to ensure high standards.

Excellent value for money very comfortable. Anonymous. Sat Nov 25 2023

197 x 152 x 20 cm

Very supportive mattress with high-density foam, quilted top permanent FR (fabric thread is fire retardant before it’s knitted) panel, and insulator felt.

very comfortable i absolutely love it. Anonymous. Lawshall Bury St. Edmunds, GB. Thu Nov 17 2022

Kingsize (5')

Royale is designed for those who prefer firm support. This contains twice tempered spring, covered in modern hand fabric. These inherently seek to Shape the body shape of any person resting on them. They are readily capable of maintaining the spine's double S shape and help prevent localized pressure points from building against critical parts of the body. Beds of this type provide superior characteristics and rest the entire body.

They were beautiful and perfect for my son's Christmas to display his beloved football tops. Anonymous. Glasgow, GB. Wed Nov 08 2023

King (5')

This 20cm deep mattress with a unique deep Ecofoam base and a soft reflex foam top gives a luxurious feel ensuring a good nights sleep.

Lovely mattress, could be slightly less thick as they state. R. Morden, GB. Sun Nov 17 2024