Firm Orthopaedic King Size Mattresses

Kingsize (5')

This Memory foam mattress is made from an upper layer of memory foam. It is soft and pliable following the outline of your body perfectly. It provides the best possible support to your body's spine allowing your body to immediately find the best possible sleeping position.

Exactly how described no issues no problems. Alex. Tonbridge, GB. Fri Jul 31 2026

Kingsize (5')

Rediscover the power of a truly restful night’s sleep with Our Orthopaedic Mattress — where comfort meets support in perfect harmony. Crafted with precision and care, the Orthopaedic Mattress is designed for those who crave extra-firm support without compromising on luxurious comfort. Its high-performance 12.5-gauge orthopaedic spring system, reinforced with a sturdy edge rod, ensures your body is perfectly supported from dusk till dawn — no more sinking or rolling! Wrapped in a premium damask cover, the mattress features traditional and modern fillings, carefully hand-tufted for added durability and long-lasting shape. Enjoy enhanced airflow through integrated air vents, while stitched-in handles make rotating your mattress effortless — keeping it fresh and comfortable for years to come.

Getting used to a hard mattress very deep. More comfortable with mattress topper and mattress protector!. Anonymous. Mon Aug 03 2026

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. Wed May 06 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.

The mattress is amazing especially for back sleepers. As soon as I lay down, my back feel so relaxed. I didn’t know how badly I needed this until I used it. Please be aware this can be very firm for some people and you may not like it. It personally worked for me as it does help relieve to my back.. Simona. Newcastle. Sat Jul 25 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.

Feels lovely and firm hopefully get a good night sleep tonight. Anonymous. Fri Aug 21 2026

Kingsize (5')

Positioned at the top of the Ortho Plus collection, the Sealy Steeple PostureTech mattress offers the maximum combination of support and durability. Sealys bespoke PostureTech spring system is at the heart of the mattress, designed to provide long-lasting and deep-down support. The springs react to the weight and movement, applying support where your body needs it the most. Tucked inside the spring unit, Edge Guard works in unison to extend the sleeping area and provide added durability. Plus, a Powerpack is located in the center of the mattress offering additional support to the lumbar region, and works simultaneously with the spring unit to reduce any aches that are disturbing your sleep. The Sealy Steeple is a double-sided mattress with each side beautifully tufted for a firmer level of support. All Sealy mattresses are hand-crafted in Britain and come with a 5-year guarantee for extra peace of mind. Firm mattress 29 cm depth available in Single, Small Double, Double, King, and Super king sizes. 5-year guarantee handmade in the UK.

My husband said to firm for him but I'm okay.. Frankie. Eastbourne, GB. Wed Aug 19 2026

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. Sat Aug 16 2025

Kingsize (5')

The Sealy Mellbreak PostureTech mattress is a great option for those who struggle with aches and pains, thanks to the firmer level of support that it provides. Sealys bespoke PostureTech spring system is at the heart of the mattress, designed to provide long-lasting and deep-down support. The springs react to the weight and movement, applying support where your body needs it the most. Tucked inside the spring unit, Edge Guard works in unison to extend the sleeping area and provide added durability. Plus, a Powerpack is located in the center of the mattress offering additional support to the lumbar region, and works simultaneously with the spring unit to reduce any aches that are disturbing your sleep. The Sealy Mellbreak is double-sided with a tufted surface on each side, offering just as much support each time you turn and rotate the mattress. All Sealy mattresses are hand-crafted in Britain and come with a 5-year guarantee for extra peace of mind. Extra Firm mattress 28 cm depth is available in Single, Small Double, Double, King, and Super king sizes. 5-year guarantee handmade in the UK

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. Sun Aug 27 2023

King (5')

Give your teenager the support they need with the Essential Ortho Memory Foam Mattress UK, designed for firm, orthopaedic comfort and healthy spinal alignment. This mattress features an 18cm multi-layer construction engineered to combine durability, structured support, and gentle contouring for growing bodies. The 14cm high-density eco foam base provides a solid foundation, while the 2cm firm reflex foam layer ensures even weight distribution and promotes correct sleeping posture. A 2cm memory foam top layer adapts to the body’s natural curves, relieving pressure points and offering extra comfort without compromising the firm, supportive feel teens need. The mattress comes with a soft, skin-friendly Top Bubble Zip cover, fully removable for easy cleaning and hygiene, ideal for busy teen bedrooms, sleepovers, and shared spaces. Its all-foam, spring-free construction ensures a silent, disturbance-free night’s sleep. Manufactured in the UK to high-quality safety and durability standards, this mattress is perfect for teenagers who prefer a firmer, orthopaedic feel, supporting healthy growth while delivering a comfortable and long-lasting sleeping surface.

Good value for the Money , quality is okay and looks good. Anonymous. Fri Jun 19 2026

King (5')

Sleep better every night with the Premium 24cm Bliss Orthopaedic Memory Foam Mattress, designed for firm, supportive comfort and lasting durability. Unlike standard mattresses that either sink too much or feel overly hard, this mattress features a high-density, multi-layer foam system that provides consistent support, pressure relief, and superior shape retention night after night. At 24cm deep, it offers premium structure far beyond typical 15–20cm mattresses, helping maintain healthy spinal alignment and reducing strain on the back, hips, and shoulders. The layered design combines a 14cm high-density eco foam base, 5cm reflex foam layer for resilience and firmness, and a 5cm memory foam comfort layer that adapts to your body contours without excessive sinking. Its all-foam construction ensures quiet, motion-free sleep, making it ideal for couples or shared beds. The breathable, hypoallergenic zip cover is removable for easy cleaning, keeping your sleeping environment fresh. Delivered vacuum packed and rolled, it’s simple to transport and expands to full size within 48–72 hours. Perfect for main bedrooms, guest rooms, spare beds, or rental and hospitality use, it suits sleepers who prefer firm, structured comfort. Available in UK standard sizes: Single (90 × 190 cm), Small Double (120 × 190 cm), Double (135 × 190 cm), King (150 × 200 cm), and Super King (180 × 200 cm). Enjoy free UK mainland delivery and a mattress built to maintain its shape and performance for years.

King (5')

Designed for supportive and restorative sleep, the Balance Ortho Memory Foam Mattress combines firm orthopaedic comfort with pressure-relieving memory foam in a practical 20cm deep design. Expertly manufactured in the UK, this premium foam mattress delivers reliable support, durability, and everyday comfort for adults seeking healthier spinal alignment and reduced pressure points. At its core, the mattress features a durable 14cm Eco foam base layer that provides strong foundational support and long-lasting performance. Above this sits a 3cm high-density reflex foam layer, engineered to evenly distribute body weight and encourage proper posture throughout the night. The 3cm memory foam top layer gently contours to the natural shape of the body, helping relieve pressure around the shoulders, hips, and lower back while maintaining a supportive firm feel. This combination makes the mattress ideal for back support and orthopaedic comfort without excessive softness. Finished with a breathable bamboo non-quilted zip cover, the mattress offers a fresher sleeping environment with a soft-touch feel. The removable cover allows for easy cleaning and improved mattress hygiene, making it ideal for daily use. Its silent all-foam construction minimises movement transfer and removes the noise commonly associated with traditional spring mattresses, helping deliver uninterrupted sleep night after night. Suitable for single, double, king size, and divan beds, the Balance Ortho Memory Foam Mattress is a practical and comfortable choice for master bedrooms, guest rooms, and modern sleep setups.

King (5')

Designed for growing teenagers who prefer a firmer feel, the Essential Ortho Cool Blue Foam Mattress combines reliable orthopaedic support with cooling comfort. Its 18cm multi-layer foam construction provides a supportive, stable sleep surface while helping promote healthy spinal alignment throughout the night. A 14cm Eco foam base creates a strong foundation, while the reflex foam layer helps distribute body weight evenly for balanced support. The 2cm CoolBlue foam comfort layer adds breathable, cooling comfort and gentle contouring without taking away from the mattress's firm feel. For everyday practicality, the soft, skin-friendly Top Bubble Cover is removable, making it easier to keep the mattress fresh and clean. The silent all-foam construction contains no springs, helping minimise noise when your teenager moves during the night. Manufactured in the UK to high-quality standards, this durable mattress is an excellent choice for teenagers looking for firm, supportive and cooling comfort, whether for everyday sleep or accommodating friends at sleepovers.

King (5')

Experience superior comfort and targeted support with the Bliss Ortho Cool Blue Foam Mattress, expertly designed for those who prefer a firmer sleeping surface with enhanced orthopaedic support. Crafted in the UK using premium multi-layer foam technology, this 24cm deep mattress combines durability, pressure relief, and cooling comfort for a more restful night’s sleep. The mattress features a robust 14cm Eco foam base layer that delivers excellent stability and long-lasting support, making it ideal for everyday use. Above this sits a 5cm high-density reflex foam layer, engineered to promote healthy spinal alignment, evenly distribute body weight, and reduce pressure points across the body. For added comfort, the 5cm CoolBlue foam top layer provides a cooler sleeping environment by helping regulate temperature throughout the night while gently contouring to your body without losing its firm orthopaedic feel. Finished with a premium Lemon Wave zip cover, this mattress offers a soft-touch, breathable sleeping surface that is removable for easy care and maintenance. The all-foam construction eliminates spring noise and movement transfer, ensuring a quieter and more peaceful sleep experience. Perfect for master bedrooms, guest rooms, divan beds, and modern sleep setups, the Bliss Ortho Cool Blue Foam Mattress combines firm support, cooling technology, and durable UK craftsmanship in one premium sleep solution.

King (5')

Essential Ortho Foam mattress delivers firm, supportive comfort tailored to the needs of growing teenagers. Its 18cm high-density reflex foam core ensures even weight distribution, helping to maintain proper spinal alignment and provide a stable, resilient sleeping surface. Designed with practical use in mind, the all-foam construction is silent, allowing for undisturbed sleep without the noise of springs or coils. The mattress is compatible with bunk beds, divans, trundles, or standard single and double beds, making it versatile for teen bedrooms and guest rooms alike. Manufactured to high-quality standards, the mattress combines durability, firm support, and long-lasting comfort, offering teenagers the stability they need for a restful night’s sleep.

King (5')

Balance Ortho Support Foam mattress delivers firm, orthopaedic support with its 20cm high-density reflex foam core (foam grade 33/190). Designed for adults seeking proper spinal alignment and stable support, it evenly distributes weight while maintaining its shape and resilience over time. A quilted zip-off cover adds an extra layer of softness and comfort, while remaining easy to remove for cleaning, helping to maintain a hygienic sleep environment. The all-foam construction is silent, providing undisturbed rest without the noise of springs or coils. Manufactured in the UK to high-quality standards, the mattress combines durability, support, and comfort in one practical package. Its 20cm depth fits most bed frames, divans, or bases, making it suitable for adult bedrooms, guest rooms, or home setups where firm, orthopaedic support is needed.

King (5')

Upgrade your sleep with the Bliss Ortho Support Foam Mattress, a 25cm firm orthopaedic mattress designed to deliver exceptional support, comfort, and durability for adults. Crafted from high-density reflex foam, this all-foam mattress distributes weight evenly and helps maintain healthy spinal alignment, making it ideal for back sleepers, stomach sleepers, and anyone seeking firm orthopaedic support. The mattress features a non-quilted removable zip cover with a modern large circle design, offering a contemporary look while remaining practical and easy to clean. Its silent all-foam construction eliminates noise from springs or coils, ensuring undisturbed sleep and minimal partner disturbance. Proudly manufactured in the UK, the Bliss Ortho Support Mattress combines firm orthopaedic support, long-lasting reflex foam durability, and easy maintenance. Its 25cm depth fits most bed frames, divans, slatted bases, and platform beds, making it suitable for adult bedrooms, guest rooms, and premium sleep setups.