Deep Sleep King Size Mattresses

If you're looking to upgrade your current mattress to something larger or more luxurious, browse our selection of expertly designed king-size mattresses by Deep Sleep. This extensive range boasts a plethora of features designed to provide even support for your back as well as long-lasting comfort, from pocket springs to memory foam. With medium, medium-firm and firm mattresses to choose from, you're sure to find something to suit you in this range.

Carefully crafted in the UK using only the highest quality materials such as soft stretch fabric, damask and silk, these Deep Sleep king-size mattresses are stylish as well as comfortable. Air vents, Cool Plus functionality and other such features have also been added to selected mattresses for ventilation purposes, keeping you cool throughout the night.

With great savings to take advantage of, all of our Deep Sleep king-size mattresses offer excellent value for money. And with free delivery on all of our products plus next day delivery on selected mattresses, you won't have to wait very long for that fantastic night's sleep.
Filters
Set Descending Direction
Bed Size
Mattress / Divan Firmness
Price
Brands
  1. Deep Sleep York King Size Mattress Mattress firmness

    Deep Sleep York King Size Mattress

    £119.99
    RRP: £199.99 | Save £80.00 (40%)
    Next Day Delivery Available
    • Stitchbond material
    • King Size mattress
    • Superb value
    Best Seller Made in the UK
  2. Deep Sleep Solomaster King Size Mattress Mattress firmness

    Deep Sleep Solomaster King Size Mattress

    £149.99
    RRP: £235.99 | Save £86.00 (36%)
    Next Day Delivery Available
    • Luxurious fillings
    • Cool Plus Cover
    • Hand Tufted
    Best Seller Made in the UK
  3. Sussex King Size Mattress Mattress firmness

    Sussex King Size Mattress

    £159.99
    RRP: £235.99 | Save £76.00 (32%)
    Next Day Delivery Available
    • Luxury fillings
    • Hand tufted for even support
    • King size mattress
    Best Seller Made in the UK
  4. Deep Sleep Solo Memory King Size Mattress Mattress firmness

    Deep Sleep Solo Memory King Size Mattress

    £179.99
    RRP: £282.99 | Save £103.00 (36%)
    Next Day Delivery Available
    • 1" V60 memory foam mattress
    • Luxurious fillings
    • Cool Plus Cover
    Best Seller Made in the UK
  5. Visco Bonnell King Size Mattress Mattress firmness

    Visco Bonnell King Size Mattress

    £199.99
    RRP: £342.99 | Save £143.00 (41%)
    Next Day Delivery Available
    • 2" V60 memory foam
    • Soft fabric
    • King size mattress
    Best Seller Made in the UK
  6. Cambridgeshire King Size Mattress Mattress firmness

    Cambridgeshire King Size Mattress

    £199.99
    RRP: £314.99 | Save £115.00 (36%)
    Next Day Delivery Available
    • High loft 12" mattress
    • Hand tufted for even support
    • High quality Belgian damask
    Made in the UK
  7. Deep Sleep Chatsworth King Size Mattress Mattress firmness

    Deep Sleep Chatsworth King Size Mattress

    £199.99
    RRP: £302.99 | Save £103.00 (34%)
    Next Day Delivery Available
    • 800 Pocket Springs
    • Luxurious fillings
    • Viscose damask fabric
    Best Seller Made in the UK
  8. Buckingham King Size Mattress Mattress firmness

    Buckingham King Size Mattress

    £209.99
    RRP: £342.99 | Save £133.00 (38%)
    Next Day Delivery Available
    • Pocket spring unit
    • Soft stretch fabric
    • Hand tufted
    Best Seller Made in the UK
  9. Deep Sleep Eco-Paedic King Size Mattress Mattress firmness

    Deep Sleep Eco-Paedic King Size Mattress

    £209.99
    RRP: £299.99 | Save £90.00 (30%)
    Next Day Delivery Available
    • Viscose Damask Fabric
    • Micro Quilted Cover
    • Luxurious fillings
    Made in the UK
  10. Deep Sleep Silk 1000 King Size Mattress Mattress firmness

    Deep Sleep Silk 1000 King Size Mattress

    £229.99
    RRP: £362.99 | Save £133.00 (36%)
    Next Day Delivery Available
    • 1 1/2" V60 Memory Foam
    • Soft Silk Mattress Cover
    • 1000 Pocket Spring
    Best Seller Made in the UK
  11. Deep Sleep Bronze 1500 King Size Mattress Mattress firmness

    Deep Sleep Bronze 1500 King Size Mattress

    £254.99
    RRP: £379.99 | Save £125.00 (32%)
    Next Day Delivery Available
    • 1500 Pocket Spring
    • Luxurious fillings
    • Wool Tufts
    Best Seller Made in the UK
  12. Silk 1000 Super King Size Mattress Mattress firmness

    Silk 1000 Super King Size Mattress

    £289.99
    RRP: £499.99 | Save £210.00 (42%)
    Next Day Delivery Available
    • 1 1/2" V60 Memory Foam
    • Soft Silk Mattress Cover
    • 1000 Pocket Spring
    Best Seller Made in the UK
  13. Deep Sleep Ortho Comfort King Size Mattress Mattress firmness

    Deep Sleep Ortho Comfort King Size Mattress

    £309.99
    RRP: £479.99 | Save £170.00 (35%)
    Next Day Delivery Available
    • Pocket sprung
    • Edge to edge support
    • Luxurious damask fabric
    Best Seller
Filters
Set Descending Direction