king size mattresses
Discover ultimate comfort and space with our much-loved king size mattresses. Designed to provide luxury and support they are ideal for couples and bed sharers. Choose from a wide range of high-quality materials so you can shop for a king size memory foam mattress or a firm king size mattress, among many other options.
Indulge in deep, uninterrupted sleep, and wake up feeling refreshed and energised with our selection of the best king size mattresses. Discover unparalleled comfort with our luxurious king mattresses that have been designed to provide optimal support and restful sleep. Whether you prefer a soft or firm mattress, we have every option to suit your individual preferences. King mattresses offer ample space for couples to stretch out and relax, promoting uninterrupted sleep throughout the night. Elevate your sleep experience and wake up refreshed and rejuvenated every morning with our exceptional king-size mattresses. If you're unsure whether your king mattress will get through your doorways, our rolled mattress range might be a better option.
FAQs:
Will a king size mattress fit up my stairs?
In most homes, yes - but it's worth measuring your staircase and landing first, because a king-size mattress is 150cm wide x 200cm long, and unless the mattress is vacuum packed, the mattress can't be folded or bent without damaging the springs. Measure your doorways, your stairway head clearance, and any corners or turns the mattress will need to make. A useful rule of thumb: if the mattress fits diagonally across a corner at 45°, it will turn the rest of the way without a problem. Our bed and mattress size guide walks you through every measurement step by step. If access is tight, a rolled mattress is compressed and boxed for delivery, making it far easier to get into awkward spaces.
How much does a king size mattress weigh?
Weight varies considerably depending on the construction - pocket sprung mattresses with higher spring counts and deeper foam layers are heavier than simpler open coil models. As a general guide, a king-size mattress typically weighs noticeably more than a double and will usually need two people to move it safely.
What size duvet do I need for a king size bed?
A king size bed takes a king size duvet, which measures 225cm x 220cm in the UK. If you share the bed and tend to find yourself short of cover, a super king duvet (260cm x 220cm) on a king bed gives generous overhang on both sides and puts an end to the nightly tug-of-war. You can browse our full duvet range by size, or read our duvet buying guide if you're also deciding on warmth.
Is a king size mattress worth it for one person?
Absolutely. A king size mattress is 15cm wider and 10cm longer than a double, so it's particularly worth considering if you're taller than average, if you move around a lot in your sleep, or if you share the bed with a pet. Plenty of solo sleepers upgrade to a king purely for the extra room to stretch out.
How many springs should a king size mattress have?
There's no single right number, and more springs doesn't automatically mean a better mattress - spring quality, zoning and the comfort layers above matter just as much. That said, higher spring counts generally offer more responsive, targeted support because each spring works more independently to follow the contours of your body. Our king size range spans from around 800 pocket springs up to 3000, so it's worth considering alongside firmness and the comfort fillings rather than in isolation. Bear in mind that spring counts are usually quoted for a king size mattress as standard, so a double version of the same model will have proportionally fewer.
What's the difference between a king and a super king?
Width, mainly. A king-size mattress is 150cm x 200cm, while a super king is 180cm x 200cm - so a super king gives you an extra 30cm of width, with both sizes sharing the same 200cm length. For couples, that extra width makes a real difference to how much you notice a partner moving in the night. The trade-off is room space and access: a super king needs a larger bedroom to feel comfortable and is harder to manoeuvre up stairs and around corners. If you're weighing the two up, our super king mattress page has the full picture.
Can you deliver my new king mattress and remove my old king mattress?
Delivery options vary by product and postcode and are confirmed at checkout - just enter your postcode to see what's available for your order. If you're wondering what to do with your old mattress, we also run a dedicated mattress recycling scheme that collects from the room of your choice and takes it to a professional, accredited recycling facility, so it doesn't end up in landfill. Please note, your mattress needs to be dry and in a hygienic condition for the team to remove it.
