King Size Mattresses

Sleep like a king (or queen!) with our fantastic range of king size mattresses. Measuring 5’ x 6’6” (150 cm x 200 cm) there's all the space you need for a wonderful night's sleep. Choose from our huge range, including Sealy, Rest Assured and Silentnight king size mattresses. With king size mattresses including memory foam, pocket sprung and orthopaedic king mattresses - there's something for everyone. All with Free Delivery, many selected products are available with a complementary Two Man Delivery Upgrade to the room of your choice!
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Up to 70% off
Memory Zone Pocket 2000 Mattress
BANK HOLIDAY SALE
  • Single

    3′ x 6′3″
    £238.19
    Next Day
  • Small Double

    4′ x 6′3″
    £327.75
    Next Day
  • Double

    4′6″ x 6′3″
    £327.75
    Next Day
  • European Double

    4′7″ x 6′6″
    £342.15
    Next Day
  • King Size

    5′ x 6′6″
    £371.03
    Next Day
  • European King Size

    5′3″ x 6′6″
    £408.78
    Next Day
  • Superking

    6′ x 6′6″
    £411.98
    Next Day
Up to 65% off
Silentnight Vilana Miracoil Limited Edition Mattress
BANK HOLIDAY SALE
  • Single

    3′ x 6′3″
    £126.08
    Next Day
  • Small Double

    4′ x 6′3″
    £167.48
    Next Day
  • Double

    4′6″ x 6′3″
    £167.48
    Next Day
  • King Size

    5′ x 6′6″
    £191.62
    Next Day
  • Superking

    6′ x 6′6″
    £245.81
    Next Day
Up to 30% off
La Romantica Rhapsody Pocket 1000 Mattress
BANK HOLIDAY SALE
  • Single

    3′ x 6′3″
    £153.92
    Next Day
  • Small Double

    4′ x 6′3″
    £216.14
    Next Day
  • Double

    4′6″ x 6′3″
    £216.14
    Next Day
  • King Size

    5′ x 6′6″
    £278.85
    Next Day
  • Superking

    6′ x 6′6″
    £366.42
    Next Day
Up to 65% off
Sealy Posturepedic Backcare Extra Firm Mattress
BANK HOLIDAY SALE
  • Single

    3′ x 6′3″
    £231.28
    Next Day
  • Small Double

    4′ x 6′3″
    £295.73
    Next Day
  • Double

    4′6″ x 6′3″
    £295.73
    Next Day
  • King Size

    5′ x 6′6″
    £338.19
    Next Day
  • Superking

    6′ x 6′6″
    £397.62
    Next Day
  • Superking Zip and Link

    6′ x 6′6″
    £419.95
    14-21 Days
Up to 50% off
Silentnight Essentials Pocket 1000 Memory Mattress
BANK HOLIDAY SALE
  • Single

    3′ x 6′3″
    £202.09
    Next Day
  • Small Double

    4′ x 6′3″
    £271.88
    Next Day
  • Double

    4′6″ x 6′3″
    £271.88
    Next Day
  • King Size

    5′ x 6′6″
    £318.15
    Next Day
  • Superking

    6′ x 6′6″
    £385.90
    Next Day
Up to 55% off
Bodyshape Ortho Memory Foam Mattress
BANK HOLIDAY SALE
  • Small Single

    2′6″ x 6′3″
    £120.77
    Next Day
  • Single

    3′ x 6′3″
    £120.77
    Next Day
  • Small Double

    4′ x 6′3″
    £176.08
    Next Day
  • Double

    4′6″ x 6′3″
    £176.08
    Next Day
  • European Double

    4′7″ x 6′6″
    £211.44
    Next Day
  • King Size

    5′ x 6′6″
    £211.44
    Next Day
  • European King Size

    5′3″ x 6′6″
    £238.55
    Next Day
  • Superking

    6′ x 6′6″
    £238.55
    7-10 Days
Up to 50% off
Silentnight Ortho Dream Star Mattress
BANK HOLIDAY SALE
  • Single

    3′ x 6′3″
    £157.99
    Next Day
  • Small Double

    4′ x 6′3″
    £208.14
    Next Day
  • Double

    4′6″ x 6′3″
    £208.14
    Next Day
  • King Size

    5′ x 6′6″
    £242.71
    Next Day
  • Superking

    6′ x 6′6″
    £298.69
    Next Day
Up to 65% off
Bodyshape Classic Memory Foam Mattress
BANK HOLIDAY SALE
  • Small Single

    2′6″ x 6′3″
    £142.55
    Next Day
  • Single

    3′ x 6′3″
    £142.55
    Next Day
  • Small Double

    4′ x 6′3″
    £193.66
    Next Day
  • Double

    4′6″ x 6′3″
    £193.66
    Next Day
  • European Double

    4′7″ x 6′6″
    £221.92
    Next Day
  • King Size

    5′ x 6′6″
    £218.60
    Next Day
  • European King Size

    5′3″ x 6′6″
    £257.45
    Next Day
  • Superking

    6′ x 6′6″
    £257.45
    Next Day
Up to 35% off
Sealy Millionaire Orthopaedic Mattress
BANK HOLIDAY SALE
  • Double

    4′6″ x 6′3″
    £227.44
    Next Day
  • King Size

    5′ x 6′6″
    £282.13
    Next Day
Up to 35% off
Sleepeezee Backcare Deluxe 1000 Pocket Mattress
BANK HOLIDAY SALE
  • Single

    3′ x 6′3″
    £156.18
    Next Day
  • Small Double

    4′ x 6′3″
    £203.72
    Next Day
  • Double

    4′6″ x 6′3″
    £203.72
    Next Day
  • King Size

    5′ x 6′6″
    £252.13
    Next Day
  • Superking

    6′ x 6′6″
    £337.26
    Next Day
Showing products 1-10 of 232
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Browse Manufacturers
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  • Relyon
  • Healthbeds
  • La Romantica
  • Dunlopillo
  • Breasley
  • Sweet Dreams
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