King Size Mattresses
Find the right king size mattress for your bed. Every mattress here fits a standard UK king (150cm x 200cm), including all of our handcrafted king size beds. Add a mattress to your bed order and we'll take £25 off automatically. Not sure what to pick? Use our quick guide below or read the mattress guide.
King size mattresses (150cm x 200cm) in pocket sprung, memory foam and orthopaedic options. Save £25 with any bed and enjoy free UK delivery.
King Size Mattresses Buying Guide
Everything you need to know before you order
01What size is a king size mattress?
A UK king size mattress measures 150cm wide x 200cm long (about 5ft x 6ft6). It sits between a double (135cm) and a super king (180cm), and it's the closest UK size to a "queen". It gives two sleepers about 75cm each, which is the same space as a single bed. Check your frame before ordering with our size guide. All of our king size beds are built to take a standard 150cm x 200cm mattress.
↑ Back to the products02Which type of king size mattress is right for you?
| Mattress | Best for | What to expect |
|---|---|---|
| Pocket Sprung 1000 | Couples, most sleepers | Individual springs move independently, so less movement is felt across the bed |
| Pocket Sprung 2000 | Those who want closer, more responsive support | More individual springs that follow your body shape more precisely |
| Memory Foam Sprung | Side sleepers, pressure relief | Sprung support with a memory foam comfort layer that moulds to your body |
| Orthopaedic Sprung | Back sleepers, those who prefer a firmer feel | A flat, supportive surface for spinal alignment |
03Choosing the right firmness
- Side sleepers usually prefer medium to medium-soft, so shoulders and hips can sink in.
- Back sleepers often like medium-firm for steady support.
- Stomach sleepers generally do best on a firmer surface.
- Couples with different preferences should look at a medium, which suits most people, or pocket springs for less partner disturbance.
04The perfect partner for your bed
A mattress is only as good as the bed beneath it. Our king size ottoman beds lift the whole base on a gas-lift for large hidden storage (read the ottoman bed buying guide), while divan beds give you drawers for everyday access. For a statement look, choose a wingback or sleigh bed. Popular king size pairings include the Venus Linen Wingback and the Evee Linen Ottoman Bed.
05Order with confidence
- Free UK delivery. See delivery information.
- Save £25 when you add a mattress to your bed order.
- Spread the cost with Klarna.
- Free fabric samples for your bed: order swatches.
- Easy returns. Read our return and refund policy.
06Looking after your mattress
Rotate your mattress head to foot every few months in the first year, and use a breathable protector. Air your bed regularly, and keep a gap between the mattress and the headboard so the fabric isn't crushed. Always follow the care label supplied with your mattress, as foam and sprung types can differ.
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King Size Mattresses FAQs
What is the size of a king size mattress in the UK?
150cm x 200cm (about 5ft x 6ft6).
Is a king size mattress the same as a queen?
No. Queen isn't a standard UK size. A UK king is the closest equivalent.
Will a king size mattress fit my Lorinzer bed?
Yes. Every king size bed we make takes a standard 150cm x 200cm mattress.
Can I use a king size mattress on an ottoman bed?
Yes. Our ottoman beds use a gas-lift base that opens for storage. Choose a mattress depth that lets the base lift smoothly, and ask us if you're unsure.
What's the difference between a king and a super king?
A super king is wider at 180cm x 200cm, giving each sleeper about 90cm.
Which firmness should I choose?
Medium suits most sleepers. Pick softer if you sleep on your side, firmer if you sleep on your back or stomach.
Do you offer finance on mattresses?
Klarna is available on selected items. See our Klarna finance page for details.
How long will my mattress take to arrive?
Check the product page for current lead times, or see delivery information.
Need help choosing?
Our team can help with sizes, fabrics, storage and delivery. Send us your room or staircase measurements and we'll advise before you order.
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