King size mattresses
Our king size mattresses give two sleepers room to settle in, and they come from British makers including Vispring, Hypnos and Harrison Spinks. Choose a tension from soft through to very firm, then a style. A pillow top adds a softer surface, and a zip and link mattress lets each side have its own tension. Explore the collection below, or pair your mattress with one of our king beds.
- Bestseller Bestseller Chaucer Mattress King (2) from £1,699
- Bestseller Bestseller Conrad Mattress King (6) from £3,499
- Vispring Heybrook Mattress King £7,999
- Regency Kingsbury Mattress King £2,999
- Flaxby Platinum Solstice Mattress King from £6,999
- Bestseller Bestseller Owen Mattress King (6) from £2,699
- Regency Kingston Mattress King £3,999
- Flaxby Platinum Lunar Mattress King from £4,999
- Coleridge Mattress King from £3,999
- Vispring Hartley Mattress King £9,999
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Outlet
Outlet
Medway Mattress
King
40%
off £1,899 £1,139 - Flaxby Platinum Eclipse Mattress King from £5,999
- Ribble Mattress King £2,299
- Severn Mattress King £2,299
- Witham Mattress King £1,899
- Boulton Mattress King £1,899
- Bestseller Bestseller Winwood Mattress King (2) £1,099
- Bestseller Bestseller Tennyson Mattress King (6) from £2,299
- Bestseller Bestseller Thames Mattress King £1,599
- Bestseller Bestseller Fitzgerald Mattress King (6) from £2,999
- Bestseller Bestseller Walters Mattress King (2) £1,499
- Swindale Mattress King £2,499
- Arlen Mattress King £2,099
- Byron Mattress King from £4,499
- Belvoir Mattress King (1) £899
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Outlet
Outlet
Elsham Mattress
King
(2)
50%
off £999 £499 - Harewood Mattress King (1) £799
- Regency Topper King £999
- Hypnos Organics 2 Mattress King from £4,999
- Hypnos Organics 3 Mattress King from £5,499
- Hypnos Organics 4 Mattress King from £5,999
- Hypnos Organics 6 Mattress King from £6,999
Need help choosing?
Take a look at our mattress guides.
King size mattresses are 5 foot wide and 6 foot 6 inches long, which is the same as W150cm x L200cm. A king mattress is 3 inches longer than a double mattress, so if you’re over 6ft tall the extra length will ensure you have a good amount of space to sleep comfortably.
The craftsmanship that goes into making our king size mattresses, alongside the luxurious materials and fillings used, ensures the high quality of our king mattresses. The quality of your mattress is crucial in determining how well you sleep, so it’s important to make sure yours is comfortable, supportive and durable. We do offer mattress trials on all our mattresses to help you decide.
A pocket spring count is essential in ensuring your new pocket spring king size mattress provides you with a well-supported, heavenly sleep. King size mattresses have around 1,000-15,000 pocket springs to provide a blissful sleep each night.
Yes, king size mattress are 3 inches longer than a queen mattress. A queen mattress is the same size as a small double (4’ x 6’3/120cm x 190cm), so a king mattress is both wider and longer measuring 5 foot wide and 6 foot 6 inches long or W150cm x L200cm.
There are two mattress sizes that are bigger than a king size mattress, super king and emperor, both of which are available at Feather & Black. Both offer a superior sleeping space, with a super king mattress measuring 6 foot by 6 foot 6 inches, or 180cm x 200cm, and an emperor mattress measuring 6 foot 6 inches by 6 foot 6 inches, or 200cm x 200cm.