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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.

Items 49-62 of 62

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  1. 45% OFF
    April Sale
    Impressions 6000 Cool Blue Memory and Reflex Foam Orthopaedic Mattress
    Impressions 6000 Cool Blue Memory and Reflex Foam Orthopaedic Mattress

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    RRP From £309.99 Now From £169.99
  2. 45% OFF
    April Sale
    Sleep Soul Comfort 800 Pocket Spring Mattress
    Sleep Soul Comfort 800 Pocket Spring Mattress

    Soft
    Medium
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    was_price_is_BRL_SLEEPSOUL_COMFORT_800_POCK.7114|0.00
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    RRP From £299.99 Now From £164.99
  3. 21% OFF
    April Sale
    Jay-Be Benchmark S1 Comfort Foam Free Spring Mattress
    Jay-Be Benchmark S1 Comfort Foam Free Spring Mattress

    Soft
    Medium
    Firm
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    RRP From £189.99 Now From £149.99
  4. 42% OFF
    April Sale
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    Pearl Contour Spring Memory Foam Tufted Mattress

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    RRP From £249.99 Now From £144.99
  5. 20% OFF
    April Sale
    Jay-Be Benchmark S5 Hybrid Pocket Spring Mattress
    Jay-Be Benchmark S5 Hybrid Pocket Spring Mattress

    Soft
    Medium
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    RRP From £249.99 Now From £199.99
  6. 45% OFF
    April Sale
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    Soft Feel 7500 Memory Foam Orthopaedic Mattress Topper
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    RRP From £209.99 Now From £114.99
  7. 46% OFF
    April Sale
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    Soft Feel 2500 Memory Foam Orthopaedic Mattress Topper
    was_price_is_HAPPY_BEDS_TOPPER_2500_MATTRES.7045|0.00
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    RRP From £129.99 Now From £69.99
  8. 42% OFF
    April Sale
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    Stress Free 1500 Pocket Sprung Memory and Reflex Foam Mattress

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    RRP From £334.99 Now From £194.99
  9. 45% OFF
    April Sale
    Sleep Soul Cloud 800 Pocket Spring Mattress
    Sleep Soul Cloud 800 Pocket Spring Mattress

    Soft
    Medium
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    was_price_is_BRL_SLEEPSOUL_CLOUD_POCKET_SPR.8167|0.00
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    RRP From £489.99 Now From £269.99
  10. 44% OFF
    April Sale
    Sleep Soul Heaven Pocket Spung Mattress
    Sleep Soul Heaven Pocket Spung Mattress

    Soft
    Medium
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    RRP From £359.99 Now From £199.99
  11. 20% OFF
    April Sale
    Jay-Be Benchmark S3 Memory Fibre Spring Mattress
    Jay-Be Benchmark S3 Memory Fibre Spring Mattress

    Soft
    Medium
    Firm
    was_price_is_JYBO-BNCHMK-S3MMRY-MATT-PRNT|0.00
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    RRP From £224.99 Now From £179.99
  12. 21% OFF
    April Sale
    Jay-Be Benchmark S7 Tri-Brid Pocket Spring Mattress
    Jay-Be Benchmark S7 Tri-Brid Pocket Spring Mattress

    Soft
    Medium
    Firm
    was_price_is_JYBO-BNCHMK-S7TRIBRD-MATT-PRNT|0.00
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    RRP From £314.99 Now From £249.99
  13. 62% OFF
    April Sale
    Panda Memory Foam Bamboo Mattress Topper
    Panda Memory Foam Bamboo Mattress Topper
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    RRP From £264.99 Now From £99.95
  14. 45% OFF
    April Sale
    Sleep Soul Paradise Pocket Sprung Mattress
    Sleep Soul Paradise Pocket Sprung Mattress

    Soft
    Medium
    Firm
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    RRP From £324.99 Now From £179.99

Items 49-62 of 62

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How Big is a King Size Mattress?

A king mattress measures 150cm x 200cm, or 5.0ft x 6.6ft.

Is a King Size Mattress Right For You?

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.

Which is the Best King Mattress?

We want to make buying a new mattress as simple as possible, so each of our products come with customer star and firmness ratings. The more stars a king size mattress has, the better it has been rated by those who have bought and tried it.

If you’re not sure on which primary filling will suit you best, whether you need some of the special features, or which depth will fit your bed, please take a look at our Mattress Buying Guide and our Measuring Guide.

Need Even More Space?

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.