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King Size Mattresses

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  1. 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
  2. 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
  3. 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
  4. 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
  5. 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
  6. 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
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    7
  7. 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
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    7
  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 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
  10. 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
  11. 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
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    7
  12. Silentnight Airmesh 3000 Mattress

    Silentnight Airmesh 3000 Box Top King Size Mattress

    £964.95

    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 3000 pocket springs the required temperature drop to allow optimal sleep is achieved every night. A luxurious box top finish creates a sumptuous and supportive medium feel. FREE Express Delivery. See More
    availability
    7.5
  13. Silentnight Choice 2000 Pocket Memory Mattress

    Silentnight Choice 2000 Pocket Memory King Size Mattress

    £749.95

    Silentnight luxury king size mattress. 2000 mirapocket 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
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    7
  14. Silentnight Rio Double Mattress With EcoComfort Fibre

    Silentnight Choice Miracoil Cushion Top King Size Mattress

    £389.95

    Silentnight king size cushion top Miracoil mattress with "EcoComfort Fibre" fillings.Great support, pressure relief and comfort.Plus, fillings which reduce the build up of heat as you sleep. FREE Express Delivery. See More
    availability
    7
  15. Silentnight Seoul Double Mattress With Memory Foam

    Silentnight Choice Miracoil Memory King Size Mattress

    £439.95

    Silentnight Miracoil memory king size mattress with "EcoComfort Fibre" fillings and a deep memory foam layer.Great support, pressure relief and comfort. Plus, fillings which reduce the build up of heat as you sleep. FREE Delivery. See More
    availability
    7
  16. Silentnight Comfortable Kingsize Mattress

    Silentnight Comfortable Kingsize Mattress

    £239.95

    Silentnight rolled foam kingsize mattress for pressure relieving,anatomical support.Suits all base types including bed frames.Five year guarantee.FREE Express Delivery. See More
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    6
  17. Silentnight Essentials Pocket 1000 Mattress

    Silentnight Essence Mirapocket 1000 King Size Mattress

    £459.95

    Silentnight 1000 Mirapocket Spring king size mattress. A luxurious mattress for responsive contoured sleep with a medium feel. FREE Express Delivery. See More
    availability
    7
  18. Silentnight Memory Mattress Now Kingsize Mattress

    Silentnight Memory Mattress Now Kingsize Mattress

    £349.95

    Silentnight memory foam kingsize mattress for pressure relieving,3 zone anatomical support.Suits all base types including bed frames.Five year guarantee. FREE Express Delivery. See More
    availability
    6.8
  19. Silentnight Quantum 3000 Mattress

    Silentnight Quantum 3000 Medium 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, medium feel, supportive sleep year after year. FREE Express Delivery. See More
    availability
    7.5
  20. Simplicity Sustainable Mattress

    Simplicity 1000 Pocket King Size Mattress

    £239.95

    Simplicity 23cm deep sustainable king size mattress. Recycled 1000 pocket spring unit with rod edge support and fillings recycled from plastic bottles. All covered in a soft stretch fabric with hand tufting. Medium feel. FREE Express Delivery. See More
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    6
  21. Simplicity Sustainable Mattress

    Simplicity Open Coil King Size Mattress

    £229.95

    Simplicity 23cm deep sustainable king size mattress. Recycled open coil spring unit with rod edge support and fillings recycled from plastic bottles. All covered in a soft stretch fabric with hand tufting. Medium feel. FREE Express Delivery. See More
    availability
    5.5
  22. Sleep Naturally Pocket Ortho 1000 King Size Mattress

    Sleep Naturally Pocket Ortho 1000 King Size Mattress

    £649.95

    Super supportive 1000 pocket spring king size mattress. Traditionally hand side stitched and hand tufted with a rich viscose damask cover. Natural cotton fillings create a sumptuous luxury hotel feel. FREE Express Delivery. See More
    availability
    7
  23. Sleeping Therapy Memory React Super Kingsize Mattress

    Sleeping Therapy Memory React Kingsize Mattress

    £389.95

    Deep,medium feel, non-turn, 12.5 gauge open coil kingsize mattress with a reactive memory foam layer that responds to your body. Comfy stretch fabric cover. FREE Express Delivery. See More
    availability
    7
  24. Special Memory Kingsize Mattress

    Special Memory Kingsize Mattress

    £239.95

    Indulge yourself with memory foam fillings.Pressure relieving foam sits above supportive coil springs.Stylish suedette co-ordinating border completes this great value kingsize mattress.FREE Express Delivery. See More
    availability
    6.5
  25. Super Sleep Mattress

    Super Sleep Kingsize Mattress

    £249.95

    Support foam collection.14cm deep high density foam kingsize mattress with stretch fabric cover.FREE Express Delivery. See More
    availability
    6
  26. Super Sleep Foam Mattress

    Super Sleep Memory King Size Mattress

    £289.95

    14cm deep rolled high density profiled foam king size mattress with memory foam layer and a stretch fabric cover. Medium feel.In Stock For FREE Express Delivery. See More
    availability
    6
  27. Super Sleep Foam Mattress

    Super Sleep Memory Plus King Size Mattress

    £339.95

    19cm deep rolled high density profiled foam king size mattress with memory foam layer and a stretch fabric cover. Medium feel.In Stock For FREE Express Delivery. See More
    availability
    6.5
  28. Super Sleep Pocket Mattress

    Super Sleep Pocket Memory King Size Mattress

    £439.95

    24cm deep 1000 pocket spring king size mattress with comfort foam and 40mm memory foam surface for a sumptuous, medium feel. FREE Express Delivery. See More
    availability
    6.5
  29. Unity Comfort Foam Mattress

    Unity Comfort King Size Mattress

    £189.95

    14cm deep re-constituted foam king size mattress with a 10cm Eco foam layer below a 4cm soft foam comfort layer. All covered in a washable, responsive stretch fabric cover. Medium feel 10year guarantee. In Stock For FREE Express Delivery. See More
    availability
    6.5
  30. uSleep Comfort Luxe Mattress

    uSleep Comfort Luxe King Size Mattress

    £259.95

    Sink into this king size spring-less rolled foam mattress with a soft high density reflex foam layer to create a solid but comfy feel. Substantial support night after night. A sustainable Ecofoam support layer and a 10 year warranty ensures years of happy sleeping. Suitable for domestic or commercial use. FREE Express Delivery. See More
    availability
    7
  31. uSleep HD Pocket 1000 Mattress

    uSleep HD Pocket 1000 King Size Mattress

    £289.95

    Experience luxurious support with this fantastic value king size 1000 Pocket Spring Mattress, blending soft high density foam (HD) for supportive comfort, an encapsulated border for enhanced edge support, and an eco-foam base for lasting durability. The stretch fabric cover ensures breathability and comfort, promoting a superb sleep environment. Long lasting and popular mattress suitable for domestic and commercial use. FREE Express Delivery. See More
    availability
    7.5
  32. uSleep Supreme Hybrid 2500 Mattress

    uSleep Supreme Hybrid 2500 King Size Mattress

    £749.95

    Experience exceptional sleep with this king size 2500 Pocket Spring Mattress. Its encapsulated border ensures edge stability and robust support, while the washable Coolmax cover keeps it fresh and breathable. The advanced Aurora foam, firm HD foam, and medium HD foam layers offer tailored pressure relief and comfort, supported by a durable, eco-friendly reconstituted foam base. At 28.5cm thick, it’s designed for restorative, quality rest. FREE Express Delivery. See More
    availability
    7.5
  33. Zen Moon Natural Harmony Mattress

    Zen Moon Natural Harmony King Size Mattress

    £419.95

    King size zoned pocket sprung mattress with natural wool and cotton fillings and foam layers for comfy spinal alignment and restful recuperation. One sided, no turning over required. Handles for rotating. FREE Express Delivery. See More
    availability
    7.5
  34. Zen Moon Natural Tencel 1500 Mattress

    Zen Moon Natural Tencel 1500 King Size Mattress

    £689.95

    King size zoned 1500 pocket sprung mattress with natural wool, cotton and soft latex fillings for a responsive, rejuvenating nights sleep. A rich Tencel fabric cover is both cool and breathable. One sided, no turning over required. Handles for rotating. FREE Express Delivery. See More
    availability
    7
  35. Zen Moon Natural Tranquility Mattress

    Zen Moon Natural Tranquility King Size Mattress

    £469.95

    King size zoned pocket sprung mattress with natural wool and cotton fillings and box pillow top for comfy spinal alignment and peaceful, undisturbed sleep. One sided, no turning over required. Handles for rotating. FREE Express Delivery. See More
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    7

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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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