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King Size Mattresses

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  1. uSleep Supreme Excel Mattress

    uSleep Supreme Excel Medium King Size Mattress

    £549.95

    Experience advanced comfort with this king size Neuform Memory Foam Mattress. Its washable cover, Aurora foam, MEDIUM HD foam, and reconstituted eco foam base deliver targeted support, superior pressure relief, and eco-friendly durability. With a 25cm overall height, enjoy optimal spinal alignment and a rejuvenating sleep experience. Elevate your rest with premium quality and sustainable design.FREE Express Delivery. See More
    availability
    8.5
  2. Diamond Premier Pocket 1000 Kingsize Mattress

    Diamond Premier Pocket 1000 Kingsize Mattress

    £569.95

    A deep pillow top layer filled with high density foam and white fibre creates a firmer surface above 1000 contouring pocket springs.An aloe vera infused cover adds anti bacterial comfort to this superb kingsize mattress.FREE Express Delivery. See More
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    7
  3. Cashmere & Latex Premier Pocket 1200 Kingsize Mattress

    Cashmere & Latex Premier Pocket 1200 Kingsize Mattress

    £599.95

    Lie back and relax on 1200 supportive pocket springs above a luxurious latex layer and a cashmere enhanced soft knit cover. Acti Guard hypo allergenic and anti bacterial cover enhances this luxurious kingsize mattress.FREE Express Delivery. See More
    availability
    7.5
  4. 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
  5. 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
  6. 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
  7. Silentnight Choice 1200 Pocket Memory Mattress

    Silentnight Choice 1200 Pocket Memory King Size Mattress

    £629.95

    Silentnight pocket memory king size mattress. 1200 zoned pocket springs combine with a layer of sumptuous memory foam for a supportive, responsive, medium feel mattress. Breather border allows optimal air circulation. FREE Express Delivery. See More
    availability
    7.5
  8. Gel Encapsulated 1000 Pocket Mattress

    Gel Encapsulated 1000 Pocket Sprung King Size Mattress

    £659.95

    Quality and craftsmanship are immediately evident in this stunning king size mattress. Cooling, knitted cover and cool gel fillings sit above a responsive 1000 pocket spring unit. Encapsulated foam edge border retains support right to the very edge and extends life of mattress. Medium to firm and ultra supportive. FREE Express Delivery. See More
    availability
    7.7
  9. Sealy Tilbury Latex Mattress

    Sealy Tilbury Latex King Size Mattress

    £679.95

    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
  10. 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
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    9
  11. Mayfield Ortho Mattress

    Highgrove Mayfield Ortho 2000 King Size Mattress

    £699.95

    Superior 2000 pocket ortho king size mattress. Packed full with layers of wool, silk, cashmere and cotton all firmly hand tufted together to create a really substantial pocket sprung mattress. Superb if you like a firm mattress. FREE Express Delivery. See More
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    9
  12. 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
  13. 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
  14. Sleep Naturally Pocket Ortho 2000 King Size Mattress

    Sleep Naturally Pocket Ortho 2000 King Size Mattress

    £749.95

    Firm and supportive 2000 pocket spring king size mattress. Traditionally hand side stitched and wool hand tufted with a rich viscose damask cover. Natural cotton fillings blended to create a firmer orthopaedic feel. FREE Express Delivery. See More
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    8
  15. Silentnight Airmesh 2000 Mattress

    Silentnight Airmesh 2000 Pillow Top King Size Mattress

    £849.95

    Silentnight's unique Airmesh technology uses the sleepers movement to circulate cooling air around this state of the art king size mattress. Coupled with a cool to the touch COOLMAX cover and 2000 pocket springs the required temperature drop to allow optimal sleep is achieved every night. Pillow top finish creates a medium to firm feel. FREE Express Delivery. See More
    availability
    7.7
  16. Wool Encapsulated 1500 Mattress

    Wool Encapsulated 1500 Pocket Sprung King Size Mattress

    £849.95

    Quality and craftsmanship are immediately evident in this stunning king size mattress. Cooling, knitted cover and wool fillings sit above a responsive 1500 pocket spring unit. Encapsulated foam edge border retains support right to the very edge and extends life of mattress. Firm and ultra supportive. FREE Express Delivery. See More
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    8
  17. 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
  18. Sleep Naturally Dawn 1500 Pocket Mattress

    Sleep Naturally Dawn 1500 King Size Mattress

    £899.95

    Firm, robust support from this 1500 pocket spring one sided king size mattress. Hand laid wool, cashmere, silk and cotton fillings cushion, support and ventilate. Hand side stitching, concealed tufting create the ultimate non turn premium ortho mattress. FREE Express Delivery. See More
    availability
    7.8
  19. 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
  20. Silentnight Quantum 3000 Mattress

    Silentnight Quantum 3000 Firmer Feel Pocket Geltex King Size Mattress

    £1,179.95

    A king size mattress for the best sleeping experience around. 3000 pocket springs with a responsive Geltex Inside comfort layer for a cool, firmer feel, supportive sleep year after year. FREE Express Delivery. See More
    availability
    7.9
  21. 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
  22. Sleep Naturally Latex Element 5800 Mattress

    Sleep Naturally Latex Element 5800 King Size Mattress

    £1,449.95

    5800 pocket spring count king size mattress with natural fillings including a wonderful latex layer. Two sided for a deep, medium to firm feel and a cool, responsive nights sleep. FREE Express Delivery. See More
    availability
    7.5

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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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