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King Size Mattresses

King size mattresses offer complete comfort. Forget sleeping like sardines, you and your other half will never argue about bed hogging with this 5’ x 6’6” mattress. A king size mattress is perfect if you have a large bedroom. Why choose any other than a king size mattress if you’ve got the space to play with? You’ll sleep better at night as you’ll have the freedom to toss and turn without disturbing your partner’s sleep.

Sleep Like a King on a King Size Mattress

You’re certain to sleep well on a king size mattress, but if you’re after something even more spacious, then consider our super king size mattress range - here at Happy Beds, there’s something for everyone. Browse our selection of king size mattresses today and find the right one for you.

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  1. 55% OFF
    October Sale
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    Signature Crystal 3000 Pocket Sprung Orthopaedic Natural Fillings Mattress

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    RRP From £474.99 Now From £214.99
  2. 41% OFF
    October Sale
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    Super Ortho Spring Reflex Foam Orthopaedic Medium Firm Mattress

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    RRP From £204.99 Now From £119.99
  3. 46% OFF
    October Sale
    Deluxe Memory Spring Rolled Mattress
    Deluxe Memory Spring Rolled Mattress

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    RRP From £174.99 Now From £94.99
  4. 42% OFF
    October Sale
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    Supreme Ortho Spring Reflex Foam Orthopaedic Extra Firm Mattress

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    RRP From £214.99 Now From £124.99
  5. 41% OFF
    October Sale
    1
    Pinerest Spring Semi-Orthopaedic Quilted Fabric Mattress

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    RRP From £169.99 Now From £99.99
  6. 43% OFF
    October Sale
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    Ortho Royale Spring Orthopaedic Mattress

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    RRP From £199.99 Now From £114.99
  7. 45% OFF
    October Sale
    Ocean Gel Memory and Reflex Foam Cool Orthopaedic LayGel Mattress
    Ocean Gel Memory and Reflex Foam Cool Orthopaedic LayGel Mattress

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    RRP From £279.99 Now From £154.99
  8. 51% OFF
    October Sale
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    Signature Platinum 2000 Pocket Sprung Orthopaedic Natural Fillings Mattress

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    RRP From £409.99 Now From £199.99
  9. 45% OFF
    October Sale
    Touch 7-Zone Memory Foam Orthopaedic Rolled Mattress
    Touch 7-Zone Memory Foam Orthopaedic Rolled Mattress

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    RRP From £234.99 Now From £129.99
  10. 42% OFF
    October Sale
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    Majestic 1000 Pocket Sprung Orthopaedic Mattress

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    RRP From £239.99 Now From £139.99
  11. 45% OFF
    October Sale
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    Balmoral 3500 Pocket Sprung Memory Foam Mattress

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    RRP From £344.99 Now From £189.99
  12. 45% OFF
    October Sale
    Touch 3-Zone Memory Foam Orthopaedic Rolled Mattress
    Touch 3-Zone Memory Foam Orthopaedic Rolled Mattress

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    RRP From £219.99 Now From £119.99
  13. 45% OFF
    October Sale
    1
    Cashmere 3000 Pocket Sprung Memory Foam Mattress

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    RRP From £354.99 Now From £194.99
  14. 42% OFF
    October Sale
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    Maestro Spring Memory Foam Tufted Mattress

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    RRP From £239.99 Now From £139.99
  15. 42% OFF
    October Sale
    1
    Mirage Spring Quilted Bamboo Fabric Natural Fillings Mattress

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    RRP From £224.99 Now From £129.99
  16. 42% OFF
    October Sale
    Membound Memory Foam Spring Mattress
    Membound Memory Foam Spring Mattress

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    RRP From £189.99 Now From £109.99
  17. 44% OFF
    October Sale
    Comfort Ortho 1400 Pocket Sprung Mattress
    Comfort Ortho 1400 Pocket Sprung Mattress

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    RRP From £314.99 Now From £174.99
  18. 45% OFF
    October Sale
    Deluxe Reflex Spring Rolled Mattress
    Deluxe Reflex Spring Rolled Mattress

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    RRP From £154.99 Now From £84.99
  19. 45% OFF
    October Sale
    Flex 1000 Reflex Foam Orthopaedic Mattress
    Flex 1000 Reflex Foam Orthopaedic Mattress

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    RRP From £189.99 Now From £104.99
  20. 51% OFF
    October Sale
    1
    Signature 2000 Pocket Sprung Pillow Top Natural Fillings Mattress

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    RRP From £494.99 Now From £244.99
  21. 45% OFF
    October Sale
    1
    Aloe Vera 1500 Pocket Sprung Memory and Reflex Foam Mattress

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    RRP From £354.99 Now From £194.99
  22. 47% OFF
    October Sale
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    Signature Gold 1800 Pocket Sprung Orthopaedic Natural Fillings Mattress

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    RRP From £359.99 Now From £189.99
  23. 45% OFF
    October Sale
    Imperial 3500 Pocket Sprung Mattress
    Imperial 3500 Pocket Sprung Mattress

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    RRP From £354.99 Now From £194.99

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A king mattress offers the ultimate in luxury and space, measuring 150cm x 200cm, or 5.0ft x 6.6ft. Whether you're a couple who wants extra space at night or just a solo sleeper wanting to sleep like royalty, our king size mattresses are guaranteed to do the job.

We offer a range of mattress fillings to suit any sleeping position or support needs, including:

The mattress structure you choose can affect how your comfort throughout the night, which is why you should do careful research before purchasing anything. Our king size mattresses included the following structures:

Forget sleeping like sardines! You and your other half will never argue about bed hogging with these spacious wonders. With more than enough space to toss and turn without imposing on your partner, it’s easy to see why it is a fan favourite. Perfect if you have a large bedroom or if you’re tall and need those extra few inches to avoid your feet hanging off the end, a king size mattress really adds that special touch.

Are you not sure on whether a king size mattress will suit you best, whether you need some of the special features, or whether you'll have the space to accommodate one? Take a look at our Mattress Buying Guide and our Measuring Guide. to find out more