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  1. Silentnight Airmesh 1600 Mattress

    Silentnight Airmesh 1600 King Size Mattress

    £794.95

    Silentnight's unique Airmesh technology uses the sleepers movement to circulate cooling air around this state of the art, medium firmness, king size mattress. Coupled with a cool to the touch COOLMAX cover and 1600 pocket springs the required temperature drop to allow optimal sleep is achieved every night. FREE Express Delivery. See More
    availability
    7
  2. Serenity 1000 Pocket Sprung  Mattress

    Serenity 1000 Pocket Sprung Kingsize Mattress

    £279.95

    1000 individual pocket springs with comfy polyester fillings.Traditional damask cover and hand tufting adds up to a great value luxury king size mattress.FREE Express Delivery. See More
    availability
    7
  3. Sealy Wickham Geltex Mattress

    Sealy Wickham Pocket Geltex King Size Mattress

    £799.95

    A medium feel Sealy king size pocket Geltex hybrid mattress. A luxuriant pocket sprung core sits below a deep Geltex comfort layer creating a medium feel, cool and responsive sleeping surface and a very popular choice. FREE Express Delivery. See More
    availability
    7.7
  4. Sealy Tilbury Latex Mattress

    Sealy Tilbury Latex King Size Mattress

    £829.95

    Medium firm Sealy king size latex hybrid mattress. A Posturetech spring unit with a layer of natural latex to create a robust but soft and body moulding comfort layer. Truly sensational combination of Sealy scientific spring design and natures finest sleeping material. FREE Express Delivery. See More
    availability
    8.5
  5. Sealy Scafell Memory Mattress

    Sealy Scafell Ortho Memory King Size Mattress

    £519.95

    Extra firm Sealy king size memory hybrid mattress. A Posturetech spring unit with a layer of Memorysense memory foam, a reinforced edge guard and Powerpack lumbar support combine for an extra firm but still cocooning feel. Hybrid mattresses like these really can offer the best of both world types of support. FREE Express Delivery. See More
    availability
    9
  6. Sealy Oakmont Geltex Mattress

    Sealy Oakmont Pocket Geltex King Size Mattress

    £699.95

    A medium firm feel Sealy king size pocket Geltex hybrid mattress. A luxuriant pocket sprung core sits below a Geltex comfort layer creating a firm, cool and responsive sleeping surface. FREE Express Delivery. See More
    availability
    8.5
  7. Sealy Mellbreak Mattress

    Sealy Mellbreak Ortho King Size Mattress

    £499.95

    Extra firm Sealy king size ortho mattress. A Posturetech spring unit with reinforced edge guard and Powerpack lumbar support combine to provide a really supportive and traditional feeling mattress. Hand tufts add to the durability and support of this popular Sealy mattress. FREE Express Delivery. See More
    availability
    9.2
  8. Sealy Kingsbury Geltex Mattress

    Sealy Kingsley Geltex King Size Mattress

    £719.95

    A medium feel Sealy king size Geltex hybrid mattress. A Posturetech spring unit with EdgeGuard supports a layer of Geltex fillings encased in a luxurious pillow top finish. Supreme and gently firm support from a truly luxurious and wonderfully cool Sealy mattress. FREE Express Delivery. See More
    availability
    7.5
  9. Sealy Grassmoor Ortho Mattress

    Sealy Grassmoor Luxury Ortho King Size Mattress

    £689.00

    Extra firm, extra luxurious, extra deep Sealy king size mattress. A Posturetech spring unit upholstered with deep layers of fibre fillings sit above an edge guard and power pack lumbar support for deep, solid comfort. Hand tufted and double sided for extra support and durability. FREE Express Delivery. See More
    availability
    9
  10. Sealy Bedford Memory Mattress

    Sealy Bedford Memory King Size Mattress

    £619.95

    Medium firm Sealy king size memory hybrid mattress. A Posturetech spring unit with a layer of Memorysense memory foam offers solid, robust support with a touch of luxury in the memory foam padding. Hybrid mattresses like these really can offer the best of both world types of support. FREE Express Delivery. See More
    availability
    8.5
  11. Sealy Astwick Wool Mattress

    Sealy Astwick Wool King Size Mattress

    £539.95

    A Sealy Posturetech king size mattress with edge guard for a medium firm feel. The addition of wool above the springs adds superb temperature regulation for anyone sensitive to being warm at night. A modern, quilted finish gives this fantastic mattress a contemporary look. FREE Express Delivery. See More
    availability
    8.5
  12. Savoy XDeep 1000 Kingsize Mattress

    Savoy XDeep 1000 Kingsize Mattress

    £499.95

    For great value and stunning comfort look no further than one of our favourite kingsize mattresses.1000 pocket springs,a high loft deluxe cushion top and a sumptuous stretch fabric cover ensure a firm,supportive sleep.FREE Express Delivery. See More
    availability
    8
  13. Romeo Pocket 1500 Kingsize Mattress

    Romeo Pocket 1500 Kingsize Mattress

    £499.95

    Experience a luxury kingsize mattress.1500 count individual pocket springs support and cradle your body for a supportive,refreshing night of sleep.FREE Express Delivery. See More
    availability
    7.5
  14. Rimini Ortho Mattress

    Rimini Ortho King Size Mattress

    £349.95

    Extra deep, super strong springs with a soft touch, knitted fabric cover creates a king size mattress for gentle orthopaedic support.(Depth 30cm). Perfect if you like a firm level of support but a more luxurious surface layer.Suits all base types. FREE Express Delivery. See More
    availability
    8.5
  15. Pure Sleep Silver Kingsize Mattress

    Pure Sleep Silver Kingsize Mattress

    £559.95

    1200 reflex foam encapsulated pocket springs and a 50mm V60 memory foam layer create the ultimate responsive kingsize mattress.A silver treated stretch fabric cover reduces static and bacteria.FREE Express Delivery. See More
    availability
    7
  16. Pure Lavender Calm Mattress

    Pure Lavender Calm Memory Pocket 1000 King Size Mattress

    £499.95

    25cm deep 1000 pocket spring king size mattress with a lavender infused memory foam cover, premium adaptive cool layer and an extra thick edge wall re-inforced border combining to create a dreamy, luxury feel. The lavender infusion ensures you relax and fall asleep quicker. Delivered in rolled format. In Stock For FREE Express Delivery. See More
    availability
    7
  17. Orthopaedic Pocket 1400 Kingsize Mattress

    Orthopaedic Pocket 1400 Kingsize Mattress

    £359.95

    1400 tightly packed individual pocket springs are covered with a firm rebound foam layer creating a responsive and firm kingsize mattress.FREE Express Delivery. See More
    availability
    8
  18. OrthoFlex20 Extra Firm Kingsize Mattress

    OrthoFlex20 Extra Firm Kingsize Mattress

    £439.95

    **Extra firm feel**.Want a firm mattress? Try the Orthoflex20. 20cm reflex foam kingsize mattress with a quilted tape edged cover.In Stock For FREE Express Delivery. See More
    availability
    9.2
  19. 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
  20. 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
  21. 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
  22. 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
  23. 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
  24. 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
  25. 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
  26. 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
  27. 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
  28. 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
  29. 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
  30. 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
  31. 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
    availability
    8
  32. 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
  33. 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
  34. 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
  35. 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
  36. 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
    availability
    7
  37. 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
    availability
    7
  38. 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
    availability
    7
  39. 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
    availability
    7
  40. 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
    availability
    7
  41. 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
    availability
    7
  42. 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
    availability
    8
  43. 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
    availability
    7
  44. 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
  45. 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
  46. 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
  47. 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
  48. 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
    availability
    7
  49. 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
  50. 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

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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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