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King Size Mattresses

All our king size mattresses are 5' x 6'6" (150 cm x 200 cm) and we offer a two-man delivery upgrade to get your mattress right to your bedroom - this is complimentary on many king size mattresses. Choose your mattress from a wide range of well-known manufacturers like Silentnight, Rest Assured, Dunlopillo, Sealy, Sleepeezee and many more. All types of king size mattresses are available - memory foam, pocket sprung and orthopaedic.

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King Size Mattresses

150cm x 200cm, 5ft x 6ft 6"
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Helpful Guides & Tips for King Size Mattresses

All our king size mattresses are 5' x 6'6" (150 cm x 200 cm) and we offer a two-man delivery upgrade to get your mattress right to your bedroom - this is complimentary on many king size mattresses. Choose your mattress from a wide range of well-known manufacturers like Silentnight, Rest Assured, Dunlopillo, Sealy, Sleepeezee and many more. All types of king size mattresses are available - memory foam, pocket sprung and orthopaedic.

The Ultimate King Size Mattress Guide

When it comes to buying a king-size mattress, Mattress Next Day is the obvious choice. With free 24-hour delivery and the most affordable prices in the UK, we’re leading the way in terms of convenience, cost, and total comfort. The more challenging decision is which king-size mattress you choose! There are lots of different types out there, coming in different depths, with different firmness ratings, and from different brands. How can you make sure that you order the right king-size mattress that really is perfect for you?

At Mattress Next Day, we’re here to help. We’ve designed this comprehensive king-size mattress guide, giving you everything you need to make an informed purchasing decision and get a great night’s sleep.

What is a king-size mattress?

A king-size mattress is one of the largest widely available mattress sizes in the UK. In fact, there are only two types of mattresses that are bigger: the super-king, and the emperor. A king-size mattress is larger than a single, double, and queen, and provides much more space for comfortable sleeping and relaxation. 

How big is a king-size mattress?

The standard king-size mattress in the UK measures 5 feet across, and 6 foot 6 inches head to toe, which equates to 150cm x 200cm. It’s both longer and wider than a double, which measures 135cm x 190cm, and comfortably accommodates two sleepers, even fidgety ones! King-size mattresses are incredibly popular in the UK, and they’re especially loved by families with young children who appreciate that bit of extra space for the little ones to climb into in the mornings without having to disturb mum and dad! 

The depth of a king-size mattress varies depending on what sort of option you choose. The shallowest choices are around 14cm deep and very lightweight and convenient, while the thickest options are around 35cm deep, offering a little more comfort for those who like a more robust feel to their bed. 

What options are available?

As the customer, you have complete control over the type of king-size mattress you choose to buy. There are many different options available, allowing you to select your preferred firmness, material, and spring count. King-size mattresses are available in a soft to extra firm feel, and with spring counts ranging from 800-1200 to more than 4000. In terms of material, there’s a wealth of choice, with everything from pocket and miracoil springs to natural fillings, memory foam, gel foam, and even medical grade options. 

Whatever type of king-size mattress you choose from Mattress Next Day, you’ll benefit from our exclusive customer guarantees. We promise we’ll offer some of the best prices in the UK, and that we’ll deliver your mattress completely free, and usually within just 24 hours for products that are in stock. 

Who makes king-size mattresses?

Who doesn’t? The great thing about king-size mattresses is that they really are one of the most popular options here in the UK, so many of the biggest names in furniture manufacture these products. At Mattress Next Day, we supply king-size mattresses from the likes of Silentnight, Sleepeezee, Dreamland, Dreamworks, and more, including products that have won the prestigious Which? Best Buy award. 

What king-size mattress is best?

That’s something that only you can decide! Mattresses really are a matter of personal preference, and what’s right for one person may not be right for another. What we can say is that some types of king-size mattress may be more comfortable than others if you suffer from back pain, with a medium-firm mattress providing a good level of support and helping to promote good posture. We also recommend checking out the Which? Best Buy award winners which all have some excellent features that many people find comfortable and enjoyable. But there’s no right or wrong… it’s about what’s best for you. 

Do I need to use a mattress topper?

If you’re buying a new king-size mattress from us here at Mattress Next Day, you won’t need to use a mattress topper; we supply mattresses only from the very best in the business, so we have complete peace of mind that our mattresses offer total comfort, just as they are. However, if you have an older king-size mattress that’s lost a bit of its cosiness and warmth over time, a mattress topper can help. Keep in mind that even the best mattresses don’t last forever, and if you’ve had your old one for more than 7 years it may be time to take a look through our collection and order a new king-size mattress. 

Did you know that you can actually extend the lifespan of a new mattress by using a mattress protector? A protector works to keep out everyday dirt, dust, and grime, and prevents spills or sweat from soaking into the mattress. We recommend a hypoallergenic protector which is great for anyone with hay fever. 

How much do king-size mattresses cost?

King-size mattresses are a lot more affordable than many people think. In fact, at Mattress Next Day we guarantee that we’ll offer you some of the best prices in the UK when you buy from us, and our prices for king-size mattresses start at less than £120! Our more luxurious mattress options range from £1500 - £5000, although most of our mattresses at this size cost between £200 and £700. At Mattress Next Day, we really do have something to suit all budgets, and we’ll even help you to keep the costs down by delivering your mattress the following day for free! A great mattress doesn’t have to cost the earth. 

Ready to sleep tight?

At Mattress Next Day, we’re proud to be mattress experts, and we’re always happy to help you find your next mattress. If you have any questions about our king-size mattress range, simply get in touch with us today on 0333 0069 769, or if you’re ready to sleep tight, you can place your order now on our website!  

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