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  1. Infinity 5000 Mattress

    Infinity 5000 Medium/Firm King Size Mattress

    £1,299.95

    And relax. King Size foam mattress featuring cutting edge TrueGel grid and TrueAir layers for the very best nights sleep, every night. Medium/firm feel if that's what you like. LIFE TIME guarantee is testament to the skilled workmanship and high quality materials that create this truly premium mattress. FREE Express Delivery. See More
    availability
    8
  2. Infinity 5000 Mattress

    Infinity 6000 Hybrid King Size Mattress

    £1,499.95

    And relax. King Size hybrid mattress featuring cutting edge TrueGel grid and TrueAir layers and 1000 pocket springs for the very best nights sleep, every night. LIFE TIME guarantee is testament to the skilled workmanship and high quality materials that create this truly premium mattress. FREE Express Delivery. See More
    availability
    7
  3. Infinity 5000 Mattress

    Infinity 8000 Hybrid King Size Mattress

    £1,599.95

    And relax. King Size hybrid mattress featuring cutting edge TrueGel grid and TrueAir layers and 3000 pocket springs for a sumptuous, supportive nights sleep, every night. LIFE TIME guarantee is testament to the skilled workmanship and high quality materials that create this truly premium mattress. FREE Express Delivery. See More
    availability
    7
  4. Invigorate Firm 2000 Memory Pocket Mattress

    Invigorate Memory Pocket 2000 Firm King Size Mattress

    £479.95

    23.5cm deep 2000 pocket spring king size mattress with a memory foam layer and an edge wall re-inforced border combining to create a firm feel. Contemporary stretch fabric Uno-Q cover has sleep inducing memory foam quilted into the cover. Delivered in rolled format. In Stock For FREE Express Delivery. See More
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    8
  5. Invigorate 3000 Memory Pocket Mattress

    Invigorate Memory Pocket 3000 King Size Mattress

    £499.95

    23.5cm deep 2800 pocket spring king size mattress with a memory foam layer, premium comfort layer and an edge wall re-inforced border combining to create a supportive but comfy feel. Contemporary stretch fabric Uno-Q cover has sleep inducing memory foam quilted into the cover. Delivered in rolled format. FREE Express Delivery. See More
    availability
    7.5
  6. Invigorate 4000 Memory Pocket Mattress

    Invigorate Memory Pocket 4000 King Size Mattress

    £539.95

    25cm deep 4000 pocket spring king size mattress with a memory foam layer, premium comfort layer and an extra thick edge wall re-inforced border combining to create a sumptuous, luxury feel. Contemporary stretch fabric Uno-Q cover has sleep inducing memory foam quilted into the cover. Delivered in rolled format. In Stock For FREE Express Delivery. See More
    availability
    6.8
  7. Invigorate 3000 Pocket Mattress

    Invigorate Pocket 3000 King Size Mattress

    £429.95

    22cm deep 3000 pocket spring king size mattress with a 4.5cm premium comfort foam pad and an edge wall re-inforced border combining to create a supportive but comfy superior mattress. Contemporary stretch fabric cover for a cool, fresh sleep surface. Delivered in rolled format. In Stock For FREE Express Delivery. See More
    availability
    7.5
  8. Invigorate 4000 Pocket Mattress

    Invigorate Pocket 4000 King Size Mattress

    £459.95

    25cm deep 4000 pocket spring king size mattress with a 4.5cm premium comfort foam pad and an edge wall re-inforced border combining to create a softer, responsive superior mattress. Contemporary stretch fabric cover for a cool, fresh sleep surface. Delivered in rolled format. FREE Express Delivery. See More
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    7
  9. Kaymed Therma Phase Paradise 1200

    Kaymed Therma Phase Ultra Paradise 1200 King Size Mattress

    £1,099.00

    The Kaymed Paradise 1200 king size mattress features a 1200 density pocket spring core with reinforced edge topped with 5cm of phase change technology gel. The ultimate temperature regulating, body contouring, pressure relieving substance on the market. Deep, firm support. Free express delivery. See More
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    8
  10. Kaymed Therma Phase Paradise 1600

    Kaymed Therma Phase Ultra Paradise 1600 King Size Mattress

    £1,199.00

    The Kaymed Paradise 1600 king size mattress features a 1600 density pocket spring core with reinforced edge topped with 5cm of phase change technology gel. The ultimate temperature regulating, body contouring, pressure relieving substance on the market. Deep, sink in luxury support. Free express delivery. See More
    availability
    6.8
  11. Kaymed Therma Phase Paradise 2000

    Kaymed Therma Phase Ultra Paradise 2000 King Size Mattress

    £1,299.00

    The Kaymed Paradise 2000 king size mattress features a 2000 density pocket spring core with reinforced edge topped with 5cm of phase change technology gel. The ultimate temperature regulating, body contouring, pressure relieving substance on the market. Deep, medium firmness luxury support. Free express delivery. See More
    availability
    7.5
  12. Kaymed Therma Phase Paradise 2500

    Kaymed Therma Phase Ultra Paradise 2500 King Size Mattress

    £1,599.00

    The extra deep Kaymed Paradise 2500 king size mattress features a 2500 density pocket spring core with reinforced edge topped with 7.5cm of phase change technology gel. The ultimate temperature regulating, body contouring, pressure relieving substance on the market. Deep, substantial luxury support. Free express delivery. See More
    availability
    7.8
  13. Kozee Amber Luxury Mattress

    Kozee Amber Luxury King Size Mattress

    £239.95

    Deep, luxurious, coil sprung king size mattress with a sumptuous, medium firm feel at a magnificent price. 23cm deep with a multi stretch knitted cover and a micro quilted finish. Great value mattress if you are looking for a touch of luxury. In Stock for FREE Express Delivery. See More
    availability
    6.5
  14. Kozee Classic Ortho Kingsize Mattress

    Kozee Classic Ortho Kingsize Mattress

    £159.95

    Popular ortho label kingsize mattress. Good quality damask cover.In Stock for FREE Express Delivery. See More
    availability
    6
  15. Coral Memory Hybrid Mattress

    Kozee Coral Memory Hybrid King Size Mattress

    £409.95

    BEST SELLER. Deep and luxurious 1000 pocket spring king size mattress with sumptuous memory foam.High quality Tencel cover disperses body heat to control temperature. Sculpture quilting means the mattress really moulds to your body. No turning required. FREE Express Delivery. See More
    availability
    6.8
  16. Imperial Promotion Mattress

    Kozee Imperial Promotion King Size Mattress

    £249.95

    Super value, hand tufted king size mattress with a knitted stretch fabric cover. Deep and comfy, good all-rounder. In Stock for FREE Express Delivery. See More
    availability
    6.8
  17. Ocean 1000 Pocket Spring Mattress

    Kozee Ocean 1000 Pocket Sprung King Size Mattress

    £319.95

    1000 pocket spring king size mattress. Hand tufted and finished in a high quality soft knit fabric for sumptuous comfort.5 year warranty. FREE Express Delivery. See More
    availability
    6.5
  18. Kozee Olympic Kingsize Mattress

    Kozee Olympic Ortho Kingsize Mattress

    £199.95

    Best Seller!! Orthopaedic sprung kingsize mattress with extra deep fillings. Great value mattress. In Stock for FREE Express Delivery. See More
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    7
  19. Kozee Orthopaedic Limited Edition Kingsize Mattress

    Kozee Orthopaedic Limited Edition Kingsize Mattress

    £199.95

    New Model!! Orthopaedic sprung kingsize mattress with extra deep fillings and now a quality damask cover. Great value and comfort in a superb mattress. In Stock for FREE Express Delivery. See More
    availability
    7
  20. Kozee Posturerite Ortho Mattress

    Kozee Posturite Ortho Kingsize Mattress

    £229.95

    Orthopaedic sprung kingsize mattress with a firm hand tufted finish and a traditional, hard wearing damask cover. Great value mattress if you are looking for a medium to firm feel. FREE Delivery. See More
    availability
    7.5
  21. Sapphire Pocket Spring Mattress

    Kozee Sapphire 1000 Pocket Sprung King Size Mattress

    £319.95

    1000 pocket spring king size mattress. Deep, robust pocket sprung mattress with a damask cover. A good sturdy, great value pocket spring mattress. FREE Express Delivery. See More
    availability
    7.5
  22. Latex & Pocket Pearl Kingsize Mattress

    Latex & Pocket Pearl Kingsize Mattress

    £679.95

    Super comfy,extra deep,gently supportive pocket sprung with latex kingsize mattress.If you like a softer more luxurious sleep this popular mattress must be considered.FREE Express Delivery. See More
    availability
    6.5
  23. Latex 1000 Mattress

    Latex 1000 King Size Mattress

    £649.95

    A deep, pressure relieving layer of cooling natural latex sits above 1000 pocket springs creating a dreamy, wonderfully soft king size mattress. A rich MicroTencel fabric cover is both cool and breathable. One sided, no turning over required. Handles for rotating. FREE Express Delivery. See More
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    6
  24. Latex Pocket Pillow Top Mattress

    Latex Pocket Pillow Top King Size Mattress

    £649.95

    Super deep and sumptuous pillow top king size mattress. High density foam and latex sit above 1000 pocket springs with an encapsulated border for superb support and luxury comfort. FREE Express Delivery. See More
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    7
  25. LessStress Memory Pocket Mattress

    LessStress Pocket Memory 1000 King Size Mattress

    £399.95

    Discover premium comfort with this king size 1000 Pocket Sprung Mattress, featuring individually wrapped springs for optimal support, paired with a luxurious memory foam layer that contours to your body. The stress-relieving stretch fabric cover enhances durability and breathability, promoting relaxation and deep, restorative sleep. Enjoy improved posture, reduced pressure points, and a truly rejuvenating rest every night. FREE Express Delivery. See More
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    6
  26. Majestic Hybrid Mattress

    Majestic Cool Gel Hybrid King Size Mattress

    £499.95

    BEST SELLER. Superb king size roll packed cool gel 1000 pocket hybrid mattress. 1000 pocket spring count mattress core with a cool gel infused pressure relieving comfort layer for a very popular medium to firm feel. Border incorporates air mesh for greater air flow and handles for convenience. No turning required. FREE Delivery. See More
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    8
  27. Marlon Pillow Top Mattress

    Marlon Pillow Top Hybrid King Size Size Mattress

    £499.95

    PRICE DROP WAS £649. Extra deep, king size pillow top pocket hybrid mattress. Extra tall 1000 pocket spring count mattress core with a deep, cloud like pillow top surface for a supportive but sink in feel. Deep reinforced border increases mattress life and gives a larger sleep surface. No turning required. FREE Delivery. See More
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    7
  28. Memory Collection Kingsize Mattress

    Memory Collection Hybrid Kingsize Mattress

    £279.95

    13.5 gauge open coil kingsize mattress with a 6 gauge rod edge all topped with a deep memory foam layer and sumptuous cashmere knitted cover.FREE Express Delivery. See More
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    7
  29. Memory MultiPocket 1400 Kingsize Mattress

    Memory MultiPocket 1400 Kingsize Mattress

    £399.95

    State of the art kingsize 1400 pocket sprung mattress with a generous memory foam layer and 4 way stretch fabric cover.Support meets comfort.FREE Express Delivery. See More
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    7
  30. Memory Pocket 1000 Mattress

    Memory Pocket 1000 King Size Mattress

    £309.95

    Superb value memory foam and pocket spring king size hybrid mattress. Contouring support for a medium feel, responsive mattress. Knitted soft touch cover for extra luxury. Free express delivery. See More
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    7
  31. Memory Premier Pocket 1000 Kingsize Mattress

    Memory Premier Pocket 1000 Kingsize Mattress

    £599.95

    Deep,wonderfully supportive kingsize mattress.1000 pocket springs nestle below a 5cm memory foam layer.A combination that promotes healthy ,rejuvenating sleep.FREE Express Delivery. See More
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    7
  32. Memory Touch Mattress

    Memory Touch 1000 Pocket Sprung King Size Mattress

    £369.95

    1000 individual pocket springs with a comfy memory foam layer. Reinforced edge with border encapsulation increases sleeping area. Comfy, stretch fabric cover and micro quilt finish adds up to a supportive, medium feel, king size hybrid mattress. One sided, no turning over required. Handles for rotating. FREE Express Delivery. See More
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    7
  33. Millbrook Sublime 1000 Mattress

    Millbrook Sublime 1000 King Size Mattress

    £799.95

    Millbrook Smooth Tech technology creates a smooth tuft free finish for a plush, medium feel 1000 pocket sprung king size mattress. English cotton, Hampshire wool, silk and cashgora create a luxurious, non turn mattress. Hand side stitching adds edge support and longevity to this premium mattress. Millbrook 5 year guarantee followed by 5 year warranty. FREE Express Delivery. See More
    availability
    7
  34. Millbrook Sublime 2500 Mattress

    Millbrook Sublime 2500 King Size Mattress

    £1,049.95

    Millbrook Smooth Tech technology creates a smooth tuft free finish for a luxurious, medium feel 2500 pocket sprung king size mattress. 1000 full size pocket springs combine with a layer of 1500 micro pocket springs. English cotton, Hampshire wool, silk and cashgora create a luxurious, non turn mattress. Hand side stitching adds edge support and longevity to this premium mattress. Millbrook 5 year guarantee followed by 5 year warranty. FREE Express Delivery. See More
    availability
    6.8
  35. Monaco 1000 Firm Mattress

    Monaco 1000 Firm King Size Mattress

    £349.95

    Superb value, extra deep and firm 1000 pocket sprung luxury king size mattress. Hand tufting and a thick knitted fabric cover add a quality feel to this substantial, firm and supportive pocket sprung mattress. Two sided, turning and rotating required. Handles for turning. FREE Express Delivery. See More
    availability
    8
  36. Natural Collection 1000 Mattress

    Natural Collection 1000 King Size Mattress

    £499.95

    Wool, silk and cashmere layered above and below 1000 pocket springs creates a cool, sumptuous, firm feel king size mattress.The 100% viscose cover is quilted for even more comfort and responsiveness. FREE Express Delivery. See More
    availability
    8
  37. Natural Collection 1500 Mattress

    Natural Collection 1500 King Size Mattress

    £539.95

    Wool, silk and cashmere layered above and below 1500 pocket springs creates a cool, sumptuous, medium to firm feel king size mattress.The 100% viscose cover is quilted for even more comfort and responsiveness. FREE Express Delivery. See More
    availability
    8
  38. Natural Collection 2000 Mattress

    Natural Collection 2000 King Size Mattress

    £629.95

    Wool, silk and cashmere layered above and below 2000 pocket springs creates a cool, substantial and firm feeling king size mattress.The 100% viscose cover is quilted for a flat, even surface without tufts.. FREE Express Delivery. See More
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    8
  39. Natural Elegance 1500 Mattress

    Natural Elegance 1500 King Size Mattress

    £619.95

    Natural cotton fillings surround 1500 pocket springs in this deep, heavy, traditional king size pocket sprung mattress.The viscose cover is hand tufted to add a touch of firmness to a superb mattress. FREE Express Delivery. See More
    availability
    7.8
  40. Natural Pillow Pocket 1000 Mattress

    Natural Pillow Pocket 1000 King Size Mattress

    £419.95

    Medium comfort, deep, luxurious king size pocket sprung mattress. Sumptuous natural fillings sit in an opulent pillow top hand tufted surface layer. Fantastic mattress at a wonderful price. FREE Express Delivery. See More
    availability
    7.5
  41. Natural Sleep Pillow Pocket 2000 Kingsize Mattress

    Natural Sleep Pillow Pocket 2000 Kingsize Mattress

    £559.95

    A luxury kingsize mattress with 2000 pocket springs nestled below natural fillings including silk.A pillow top completes this impressive mattress.FREE Express Delivery. See More
    availability
    6.5
  42. Natural Sleep Pocket 1400 Kingsize Mattress

    Natural Sleep Pocket 1400 Kingsize Mattress

    £399.95

    Traditional high quality,1400 pocket spring count kingsize mattress filled with natural silk and lambswool for sumptuous comfort.FREE Express Delivery. See More
    availability
    6.5
  43. Natural Sleep Pocket 1800 Kingsize Mattress

    Natural Sleep Pocket 1800 Kingsize Mattress

    £434.95

    Traditional high quality,high spring count kingsize mattress filled with natural silk and lambswool for sumptuous comfort.FREE Express Delivery. See More
    availability
    6.5
  44. Natural Sleep Pocket 3000 Kingsize Mattress

    Natural Sleep Pocket 3000 Kingsize Mattress

    £709.95

    A kingsize mattress packed full with 3000 pocket springs and layer upon layer of natures finest and best performing fibres.Mohair,horse hair,wool,cashmere and silk create a truly wonderful nights sleep.FREE Express Delivery. See More
    availability
    5.5
  45. Natural Sleep Pocket 4000 Kingsize Mattress

    Natural Sleep Pocket 4000 Kingsize Mattress

    £714.95

    4000 highly responsive,individually pocketed springs cradle your body whilst a mix of lambswool and cotton offer cool sumptuous support from this kingsize mattress.An advanced eucalyptus enhanced cover supports skin rejuvenation.FREE Express Delivery See More
    availability
    7.9
  46. Nectar Classic Plus Medium Mattress

    Nectar Classic Plus Firm King Size Mattress

    £899.95

    Featuring Nectatex™ and Nectar Smart™ technology, this king size, no spring, mattress contours to your body for dynamic support and pressure relief. Designed for all sleep positions, it’s available in medium and firm tensions, ensuring personalized comfort for a restful night’s sleep. Firm comfort level. FREE Express Delivery. See More
    availability
    8.5
  47. Nectar Classic Plus Medium Mattress

    Nectar Classic Plus Medium King Size Mattress

    £899.95

    Featuring Nectatex™ and Nectar Smart™ technology, this king size, no spring, mattress contours to your body for dynamic support and pressure relief. Designed for all sleep positions, it’s available in medium and firm tensions, ensuring personalized comfort for a restful night’s sleep. Medium comfort level. FREE Express Delivery. See More
    availability
    7.8
  48. Nectar Hybrid Luxe Mattress

    Nectar Hybrid Luxe King Size Mattress

    £1,249.95

    The pinnacle of quality sleep. Hybrid mattress engineered from decades of innovation and sleep data. This ten-layer king size mattress design blends natural fibres with Nectar Smart™, Nectatex™, and Nectacoil™ for unmatched comfort and support. Experience superior, market-leading luxury sleep. Medium comfort level. FREE Express Delivery. See More
    availability
    7.5
  49. Nectar Hybrid Pro Mattress

    Nectar Hybrid Pro King Size Mattress

    £1,099.95

    Designed for those who demand the best in sleep, this eight-layer king size mattress combines Nectatex™ and Nectar Smart™ foam with Nectacoil™ HD and XL springs for adaptive support, breathability, and a copper infused cover. Experience superior comfort and a refreshing, rejuvenating sleep. Medium comfort level. FREE Express Delivery. See More
    availability
    7.5
  50. OrthoFlex15 Extra Firm Kingsize Mattress

    OrthoFlex15 Extra Firm Kingsize Mattress

    £339.95

    **Extra firm feel**.Great mattress for those who like a firmer feel.15cm reflex foam kingsize mattress with a quilted tape edged cover. FREE Express Delivery. See More
    availability
    9

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Our goal is to assist you in finding the perfect king size mattress for a peaceful night's sleep.

When looking for a mattress, everyone has different requirements. Your body shape, weight distribution, firmness preference and mattress type are all factors that determine which mattress is for you. 

Explore the collection of mattresses we have available at The Bed Warehouse Direct, and get in touch with our team on 0800 049 0800 if you have any questions about the mattresses we offer.

What is a king size mattress?

A king size mattress is a type of mattress that is larger than a standard double mattress. They are usually 5’0” wide by 6’6” long, which makes them perfect for a couple, especially if someone in the couple requires those extra few inches to fully stretch out.

In order to fit a king size bed into your bedroom, you’ll have to have plenty of space to ensure that your bed fits where you want it to go. It’s a good idea to measure the space where you’d like your bed to go before purchasing it, to avoid disappointment if your bed doesn’t fit when it arrives.

How big is a king size mattress?

A king size mattress is 5’0” (150cm) wide by 6’6” (200cm) long.

We also stock a range of king size bed frames that are designed to fit our collection of king size mattresses.

What other mattress sizes do you have available?

If you’d like to explore the other sizes of mattresses we have available, we offer a variety of different options for you to consider:

What types of king size mattresses do you stock?

We offer a wide range of king size mattresses that are crafted using a combination of traditional and modern methods, as well as automated techniques. This ensures that our king size mattresses are of high quality, and you can explore the different options we have available below:

King size open coil mattresses: These are made using individual steel coils that are connected to each other and reinforced with a thicker gauge steel for added firmness. However, it's worth noting that while some people may find these mattresses beneficial for back support, it may not be the case for everyone.

King size pocket spring mattresses: These are composed of individual steel coils that are encased in fabric. This design allows each spring to move independently, providing customised comfort and support that conforms to the sleeper's body shape.

King size memory foam mattresses: This is a great choice for those looking for a comfortable and responsive surface. These mattresses are created by bonding together various types of foam to reduce pressure points. However, one common issue with traditional memory foam mattresses is that they tend to trap heat, making it hard for some users to move around comfortably. But, the good news is that manufacturers have come up with solutions such as incorporating cooling foam or latex-based foam layers to address this issue.

King size hybrid mattresses: This is designed to give you the best of both worlds, combining the traditional benefits of spring mattresses with the modern technology of memory foam. This creates a versatile and comfortable sleeping surface that is sure to provide you with a great night's sleep. This hybrid mattress is a great option for those who want the support of a spring mattress as well as the pressure relief of a memory foam mattress

What's the best king size mattress for my sleep position?

The best king size mattress for you will depend on your preferred sleep position.

Front sleeper

If you're someone who sleeps on their front, it's crucial to choose a firm king size mattress. This is because a soft mattress can cause your hips to sink too far, resulting in lower back pain. 

It's worth noting that sleeping on your front can be a sign of a pre-existing lower back condition, so if possible, it's best to avoid this position. However, for those who can't change their sleeping position, a firm mattress is an essential choice to help alleviate any discomfort.

Back sleeper

For those who sleep on their back, a medium-firm king size mattress is the ideal choice. This type of mattress should be firm enough to keep your hips in alignment, but also soft enough to adapt to the curve of your lower back, providing a perfect balance of support and comfort. 

A medium-firm mattress will help keep your spine in a neutral position and reduce any pressure points, making for a comfortable and restful night's sleep.

Side sleeper

For those who sleep on their side, having a responsive mattress is essential. A mattress that allows your hips and shoulders to sink in while still providing support for your waist is ideal. 

Depending on your body shape, a soft king size mattress may be the best choice.

This type of mattress will conform to your body and provide the needed support for your hips, shoulders, and waist. It will also help to reduce pressure points, allowing for a more comfortable night's sleep.

How much does a king size mattress cost?

When it comes to purchasing a new king size mattress, it's important to remember that investing in a quality product can have long-term benefits for both your physical and mental health. 

Assuming a new king size mattress lasts around 8 years with 2 people sleeping on it, even a higher range king size mattress from £500 would be costing each sleeper from as little as 9 pence per night.

A middle range king size mattress costing between £200 and £500 would work out at between 3.5 pence and 8.5 pence per sleeper per night.

If you were to buy a cheap king size mattress for less than £200 that could be as low as just 2 pence per night per person.

How do I choose the right king size mattress for me?

It's crucial to figure out what level of comfort you're after when looking to purchase a new king size mattress. 

Take a moment to think about what you liked about your old mattress when it was new, and what you wish you could change about it now. It can also be helpful to think about a time when you slept exceptionally well on holiday and try to replicate that mattress's feel.

It's also important to consider how your own body shape and weight will affect your mattress choice. Keep in mind that product descriptions and firmness guides are based on average body types, so a mattress that feels comfortable for one person may not feel the same for someone else with a different body shape or weight.

Don't hesitate to take a look at the resources available on our website such as our FAQ videos, Bed Buyer's Guide, and our blog. We've tried to provide as much information as possible to help you make the important decision of choosing the best mattress for you.

If you're still unsure about which mattress to purchase, our expert team is here to assist you. You can give us a call at 0800 049 0800 during business hours (9:30am - 5:00pm) or drop us an email, and we'll get back to you. Our advisors have extensive experience and will provide friendly, honest, and highly-skilled advice without any pressure to buy.

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