King Size Mattresses

King Size Mattresses

Choose from our collection of king size mattresses. Available in various firmness levels, our range includes options from 1,000 to 4,000 pocket springs and innovative designs.

Super King Mattresses
Super King Mattresses
Firm Mattresses
Firm Mattresses
Medium Firm Mattresses
Medium Firm Mattresses
Pillow Top Mattresses
Pillow Top Mattresses
Zip & Link Mattresses
Zip & Link Mattresses
Natural Filled Mattresses
Natural Filled Mattresses
Memory Foam Mattresses
Memory Foam Mattresses
Pocket Sprung Mattresses
Pocket Sprung Mattresses
Emperor Mattresses
Emperor Mattresses
Synthetic And Microfibre Mattress Toppers
Synthetic And Microfibre Mattress Toppers

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Anti Bed Bug Mattress Encasements Anti Bed Bug Mattress Encasements
Anti Bed Bug Mattress Encasements Complete protection for you and your mattress.
From £35.00
Sale
Deep Memory Foam Mattress Deep Memory Foam Mattress
Deep Memory Foam Mattress Adaptive support for a superb night's sleep.
From £165.00
Sale
Cooling Medium Firm Memory Foam Mattress Cooling Medium Firm Memory Foam Mattress
Cooling Medium Firm Memory Foam Mattress Adaptive, cooling support for a deeper and more restorative night's sleep.
From £252.00 £315.00
Sale
Traditional Spring Mattresses Traditional Spring Mattresses
Traditional Spring Mattresses A great-value night's sleep starts here.
From £153.00 £180.00
Sale
Wool 2000 Pocket Spring Mattress Wool 2000 Pocket Spring Mattress
Wool 2000 Pocket Spring Mattress A blissful combination of temperature-regulating wool and 2000 pocket springs.
From £420.00 £525.00
Sale
1000 Pocket Spring Mattress 1000 Pocket Spring Mattress
1000 Pocket Spring Mattress Enhance your bedtimes with this high-quality pocket sprung mattress.
From £212.50 £250.00
Sale
Zoned Hybrid Deep Memory Foam Mattress Zoned Hybrid Deep Memory Foam Mattress
Zoned Hybrid Deep Memory Foam Mattress A memory foam and pocket spring mattress that's ideal for side-sleepers.
From £242.22 £285.00
Sale
Next Generation 1000 Spring Mattress Next Generation 1000 Spring Mattress
Next Generation 1000 Spring Mattress A responsive mattress designed with sustainability in mind.
From £391.90 £490.00
Sale
Harrison Spinks Natural 5750 Pocket Spring Mattress Harrison Spinks Natural 5750 Pocket Spring Mattress
Harrison Spinks Natural 5750 Pocket Spring Mattress Sustainably produced in the UK for superior made-to-order comfort.
From £977.50 £1,150.00
Sale
Harrison Spinks Natural 3250 Pocket Spring Mattress Harrison Spinks Natural 3250 Pocket Spring Mattress
Harrison Spinks Natural 3250 Pocket Spring Mattress Sustainably produced in the UK for luxurious made-to-order comfort.
From £722.50 £850.00
Wool 2000 Pocket Spring Orthopaedic Mattress Wool 2000 Pocket Spring Orthopaedic Mattress
Wool 2000 Pocket Spring Orthopaedic Mattress A blissful combination of temperature-regulating wool and 2000 pocket springs.
£1,105.00
Wool 2000 Pocket Spring Zip & Link Mattress Wool 2000 Pocket Spring Zip & Link Mattress
Wool 2000 Pocket Spring Zip & Link Mattress A blissful combination of temperature-regulating wool and 2000 pocket springs.
£1,205.00
Sale
Harrison Spinks Natural 8250 Pocket Spring Pillowtop Mattress Harrison Spinks Natural 8250 Pocket Spring Pillowtop Mattress
Harrison Spinks Natural 8250 Pocket Spring Pillowtop Mattress Sustainably produced in the UK for the ultimate in luxurious made-to-order comfort.
From £1,062.50 £1,250.00
1000 Pocket Spring Zip & Link Mattresses 1000 Pocket Spring Zip & Link Mattresses
1000 Pocket Spring Zip & Link Mattresses Enhance your bedtimes with this high-quality pocket sprung mattress.
From £495.00
Sale
Next Generation 2000 Spring Mattress Next Generation 2000 Spring Mattress
Next Generation 2000 Spring Mattress A responsive and extra supportive mattress designed with sustainability in mind.
From £516.00 £645.00

Related Collections

King Size Duvets
King Size Duvets
King Size Mattress Toppers
King Size Mattress Toppers
King Size Bedding & Bedding Sets
King Size Bedding & Bedding Sets
King Size Bedspreads & Bed Throws
King Size Bedspreads & Bed Throws
King Size Duvet Covers & Duvet Sets
King Size Duvet Covers & Duvet Sets

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King Size Mattresses FAQs

What size is a king size mattress?

Our king size mattresses are the standard UK sizes. They measure 150cm x 200cm (5ft 0" x 6ft 6") and are the same size as our king size toppers, king size mattress protectors and king size fitted sheets. If you have a king size mattress but want a little extra room for your duvet, size up and go for a superking duvet. Want to know more about mattress sizes? Visit our size guide.

What king mattress should I buy for back pain?

Choosing the best mattress for back pain depends on your sleeping position. That’s because the way we sleep puts pressure on our bodies which can aggravate the joints and spine. If you sleep on your back or stomach, you’ll find a firm mattress supports your spine in a neutral position to help alleviate back pain. If you sleep on your side, a medium firmness mattress will be better thanks to the way the mattress lets your hips and shoulders sink into the mattress. This will help your spine rest in a more neutral position. You may also find using specialist pillows that help align your hips and knees will reduce pressure on your back. Some people find that memory foam mattresses help their back pain, others prefer pocket sprung mattresses.

What's the difference between a king size and queen size mattress?

A king size mattress measures 150cm x 200cm, while a queen size mattress in the UK measures 120cm x 190cm, making it slightly smaller than a standard double mattress. A king size mattress is 30cm wider than a queen size mattress and 10cm longer – this extra space can make a lot of difference to two people sharing a bed. A king size mattress is a good choice for two people sharing a bed, so long as there is enough space in your bedroom. You should allow at least 30cm at each side of your bed and 60cm between the foot of your bed and the wall or furniture so you can move around your bed comfortably and safely. If you do not have enough space for a king mattress and bed, a double bed (135cm x 190cm) will give you more space than a queen size bed.

What king mattress is better for my bed – pocket spring or memory foam mattress?

Choosing the right king mattress for your king size bed is a matter of preference. It doesn’t matter whether you place a king size pocket spring mattress on your bed or you choose a king size memory foam mattress. A pocket spring mattress will be more supportive and can be helpful for people who overheat at night. In comparison, a memory foam mattress is more adaptable and can be helpful for people who suffer with aching joints. It is important to choose the correct size mattress for your bed. This means choosing a king size mattress for a king size bed, and not settling for the wrong size. Not only does the wrong size mattress affect your comfort and your bedroom’s appearance, but it can also damage your mattress.