King Size Mattresses 5ft

Relax in luxurious comfort night after night with a superb king size mattress, beautifully designed and incorporating the latest sleep research. Choose from hand-tufted softness to body-cushioning memory foam and discover what a good night's sleep really means. Shop our range and find the best king mattress for you.

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  • Delivered in 21 days
    21% OFF
    Save £90
    Was £449 Sale £399 Extra Sale Offer £359

    Offering outstanding orthpaedic support with an extra firm feel, the Silentnight Miracoil Serenity Ortho mattress is your kind of comfort at a fantastic value price.

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  • Delivered in 21 days
    20% OFF
    Save £145
    Was £729 Sale £649 Extra Sale Offer £584

    Top to bottom and side to side, the Silentnight Mirapocket Serenity 2000 Memory mattress provides incredible comfort at a fantastic value price.

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    Medium
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  • Delivered in 21 days
    21% OFF
    Save £90
    Was £449 Sale £399 Extra Sale Offer £359

    The Silentnight Mattress-Now 7 Zone memory foam roll up mattress offers an array of innovative features at an outstanding price.

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  • Delivered in 21 days
    22% OFF
    Save £135
    Was £629 Sale £549 Extra Sale Offer £494
    • Fantastic value Silentnight Mirapocket Serenity Ortho mattress
    • Edge-to-edge support means more sleep space with no ‘roll together’
    • Mirapocket technology with 1400 zoned pocket springs
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  • Delivered in 21 days
    22% OFF
    Save £102
    Was £479 Sale £419 Extra Sale Offer £377
    • Fantastic value spring and memory foam mattress from Silentnight
    • Edge-to-edge support, more personal space, no ‘roll together’
    • Miracoil zoned spring system aligns your spine perfectly
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  • Delivered in 21 days
    21% OFF
    Save £213
    Was £1049 Sale £929 Extra Sale Offer £836

    This Silentnight mattress is so luxurious you’ll be surprised at the price. With 3000 pocket springs in king size and a generous layer of cooling, temperature regulating Geltex.

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    Soft
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  • Delivered in 21 days
    38% OFF
    Save £185
    Was £499 Sale £349 Extra Sale Offer £314

    With two types of pressure-relieving foam, this ultra-comfy Silentnight mattress makes sleep more relaxing. Rolled for ease of delivery and yours at an incredible-value price.

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  • Delivered in 21 days
    20% OFF
    Save £145
    Was £729 Sale £649 Extra Sale Offer £584

    Silentnight quality and comfort at a price you’ll love. With 1000 responsive pocket springs and layer of cooling Geltex so you enjoy a fresh, cooling night’s sleep.

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  • Delivered in 21 days
    38% OFF
    Save £370
    Was £999 Sale £699 Extra Sale Offer £629

    Calming and cooling, this high-tech Silentnight rolled mattress is designed for the ultimate in restorative sleep. The innovative sleep surface even promotes better circulation.

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  • Delivered in 21 days
    39% OFF
    Save £545
    Was £1399 Sale £949 Extra Sale Offer £854

    Heat-absorbing, body-cushioning and pressure-relieving, this advanced rolled mattress from Sleepeezee has everything in place for cooler, more restorative and more serene sleep.

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