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King Size Mattresses

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Getting a good night's sleep is vital, so it’s important to choose the right mattress. With our king size mattresses, you're getting value, quality, comfort and craftsmanship.
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60 products
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Silentnight Mattress Now King Size Mattress favorite_border favorite

Silentnight Mattress Now Mattress - King Size
£159.99
stars-ratings 1 review

Product 1
Silentnight Mattress Now 7 Zone King Size Memory Foam Mattress favorite_border favorite

Silentnight Mattress Now 7 Zone Memory Foam Mattress - King Size
£279.99

Product 2
Silentnight Pocket Essentials 1000 Mirapocket Memory King Size Mattress favorite_border favorite

Silentnight Pocket Essentials 1000 Memory Mattress - King Size
£399.99
stars-ratings 8 reviews

Product 3
Silentnight Mattress Now 3 Zone King Size Memory Foam Mattress favorite_border favorite

Silentnight Mattress Now 3 Zone Memory Foam Mattress - King Size
£239.99
stars-ratings 1 review

Product 4
Sealy Pearl Luxury King Size Mattress
£100 off
favorite_border favorite

Sealy Pearl Luxury Mattress - King Size
£499.99 was £599.99
stars-ratings 5 reviews

Product 5
Healthopaedic Silk 1000 King Size Mattress
£50 off
favorite_border favorite

Healthopaedic Silk 1000 Mattress - King Size
£249.99 was £299.99
stars-ratings 3 reviews

Product 6
Sealy Pearl Ortho King Size Mattress
£100 off
favorite_border favorite

Sealy Pearl Ortho Mattress - King Size
£399.99 was £499.99
stars-ratings 1 review

Product 7
Silentnight Pocket Essentials 1000 Mirapocket King Size Mattress favorite_border favorite

Silentnight Pocket Essentials 1000 Mattress - King Size
£299.99
stars-ratings 4 reviews

Product 8
Sealy Pearl Memory Mattress King Size
£100 off
favorite_border favorite

Sealy Pearl Memory Mattress - King Size
£349.99 was £449.99

Product 9
Sleepeezee Backcare Deluxe 1000 King Size Mattress
£30 off
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Sleepeezee Backcare Deluxe 1000 Mattress - King Size
£269.99 was £299.99
stars-ratings 4 reviews

Product 10
Sealy Alderney Gel Mattress King Size
£100 off
favorite_border favorite

Sealy Alderney Gel Mattress - King Size
£429.00 was £529.00

Product 11
Myers Twin Comfort 650 Mattress King Size favorite_border favorite

Myers Twin Comfort 650 Mattress - King Size
£299.99

Product 12
Sealy Mulberry King Size Mattress favorite_border favorite

Sealy Mulberry Mattress - King Size
£249.99
stars-ratings 2 reviews

Product 13
Supreme Vasco King Size Memory Foam Mattress - Medium / Firm favorite_border favorite

Supreme Vasco Memory Foam Mattress - King Size
£259.99
stars-ratings 1 review

Product 14
Dura Pocket Memory 1000 King Size Mattress favorite_border favorite

Dura Pocket Memory 1000 Mattress - King Size
£349.99

Product 15
Sealy Jubilee Latex King Size Latex Foam Mattress
£150 off
favorite_border favorite

Sealy Jubilee Latex Foam Mattress - King Size
£349.99 was £499.99
stars-ratings 1 review

Product 16
Breasley Uno Memory Pocket 2000 King Size Mattress
£20 off
favorite_border favorite

Breasley Uno Memory Pocket 2000 Mattress - King Size
£379.99 was £399.99

Product 17
Silentnight Oslo Miracoil Memory Cushion Top King Size Mattress
£50 off
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Silentnight Oslo Memory Cushion Top Mattress - King Size
£329.99 was £379.99

Product 18
Sealy Guernsey Gel Mattress King Size
£70 off
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Sealy Guernsey Gel Mattress - King Size
£589.00 was £659.00

Product 19
Sealy Pearl Geltex Mattress King Size
£120 off
favorite_border favorite

Sealy Pearl Geltex Mattress - King Size
£429.99 was £549.99

Product 20
Breasley Uno Pocket 2000 King Size Mattress
£20 off
favorite_border favorite

Breasley Uno Pocket 2000 Mattress - King Size
£329.99 was £349.99

Product 21
Rest Assured Harewood 800 Memory Foam King Size Mattress favorite_border favorite

Rest Assured Harewood 800 Memory Foam Mattress - King Size
£399.00
stars-ratings 1 review

Product 22
Breasley Uno Memory Pocket 1000 King Size Mattress
£20 off
favorite_border favorite

Breasley Uno Memory Pocket 1000 Mattress - King Size
£279.99 was £299.99

Product 23
Sealy Aspen King Size Mattress favorite_border favorite

Sealy Aspen Mattress - King Size
£269.99

Product 24
Silentnight Rio Miracoil Cushion Top King Size Mattress favorite_border favorite

Silentnight Rio Cushion Top Mattress - King Size
£299.99

Product 25
Rest Assured Rufford 2000 Memory Foam King Size Mattress favorite_border favorite

Rest Assured Rufford 2000 Memory Foam Mattress - King Size
£599.00

Product 26
Simmons Ultimate Backcare King Size Mattress favorite_border favorite

Simmons Ultimate Backcare Mattress - King Size
£299.99

Product 27
Sleepeezee Memory Comfort 1000 King Size Mattress favorite_border favorite

Sleepeezee Memory Comfort 1000 Mattress - King Size
£432.00
stars-ratings 1 review

Product 28
Vogue Jasmine King Size Mattress favorite_border favorite

Vogue Jasmine Mattress - King Size
£199.99

Product 29
Myers Pocket Comfort 1400 Mattress King Size favorite_border favorite

Myers Pocket Comfort 1400 Mattress - King Size
£579.99

Product 30
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About King Size Mattresses

You'll wake up feeling refreshed every morning after a night on one of our king size mattresses. With the many advantages of restful sleep, from improved concentration to a whole range of health benefits, a new king size mattress might be one of the most important investments you will ever make. And at such a luxurious size, there should be ample space for both you and your partner to stretch out, relax and snooze in comfort.

Our 5ft king size mattresses range from memory foam, no-turn mattresses to the superlative support of our orthopaedic mattresses and responsive pocket-sprung mattresses, with fine covers of cashmere or silk, and luxurious fillings such as cotton or hand-teased lambswool or horsehair. If joint pain is a concern, you may want to choose a memory foam mattress, which moulds itself to your body shape. Or for superior comfort levels, you could go for latex and pocket springs. Those who favour a firmer, harder surface to sleep on might prefer an open coil mattress - it's a more traditional choice.

And there are still more ways to make sure your new mattress is exactly what you need. Answer some simple questions and our mattress selector will suggest your perfect match. Or take a look at our in depth mattress guide. it's also reassuring to know that our mattresses are dust-mite resistant, and many are hypo-allergenic - welcome news for allergy-sufferers. And with a range of support levels, from soft through to very firm, available across all the big brand names, you're sure to find something that will suit you perfectly - especially as our mattresses will fit'standard UK bed bases.

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