Best UK King Size Mattress under £400 - Top Mattress Brands Finding the right mattress can be quite a challenging task – particularly if you do not wish to spend a fortune on it. Most mattresses tend to go over £400 easily – and can reach with ease the price of £1000. For people with an average salary, that price is not entirely reasonable – mainly because it will kill through most of their salary in a heartbeat. This is why we wrote this helpful mattress buying guide – all so that you can choose a high-quality mattress that is within your budget. 4.4 / 5 ( 38 votes ) BEST 2020 PROS CONS OUR VERDICT Type Firmness Features Packing Weight Certification Warranty Silentnight 1400 Pocket UK King Size Mattress See Deal PROS Great support thanks to the 1400 Mirapocket springs The cover is very soft and comfortable to stay on The filling is hypoallergenic and highly breathable CONS Some customers claim that the mattress arrived stained OUR VERDICT The mattress is an excellent combo of firmness and comfort, making it an efficient way of supporting your back. Type Pocket Mattress Firmness Firm Features Hypoallergenic, Made in the UK Packing Flat, full size mattress Weight 39 Kg Certification This product is suitable and tested for domestic use only to BS7177 Low Hazard requirements Warranty 5 years Happy Beds Calming 3000 Pocket Spring UK King Size Mattress See Deal PROS Comfortable thanks to the reflex foam and memory foam layers Supportive due to pocket sprung technology Aloe Vera infusion technology that keeps the mattress nice and cool CONS Some people complain that it is too soft Poor support at the edge could cause you to “roll out.” OUR VERDICT The mattress is overall very comfortable, and it also allows you to wake up very well rested – mainly due to its breathability. Type Memory Foam, Sprungs, Reflex Foam Firmness Medium Features Hypoallergenic, UK Made, Aloe Vera Infused Fabric Packing Flat, full size mattress Weight 35 kg Certification Meets all UK Fire Regulations Warranty 12 months Happy Beds Orthopaedic 2000 Pocket Sprung UK King Size Mattress See Deal PROS The mattress is resistant to transfer due to the pocket sprung technology Since it uses natural materials, the mattress is very comfortable to sleep on Very supportive and efficient for people that have back problems CONS Some users complain about the natural “animal” smell OUR VERDICT The mattress is a great and firm choice for those looking for mattresses with natural filling Type Pocket Sprung Firmness Medium Firm Features Orthopaedic mattress with a 2000 individually sprung pocket spring system Packing Flat, full size mattress Weight 25 Kg Certification Meets all UK Fire Regulations Warranty 12 months Airsprung Revivo Luxury Pocket Memory Mattress UK King Size See Deal PROS The mattress is very supportive due to pocket sprung technology Coolmax cover allows it to absorb the body moisture on hot days The memory foam is very comfortable and breathable CONS Some claim that it has too few springs It may be a bit too soft for some users OUR VERDICT The mattress is highly comfortable and generally a good choice for those that are shopping on a budget. Type Luxury Pocket Memory Mattress Firmness Medium Features Pocket Sprung Core, Knitted Sleeping Surface, UK Made Packing Rolled, mattress in a box Weight 30.6 Kg Certification Meets all UK Fire Regulations Warranty 12 months Silentnight Deluxe Sprung UK King Size Mattress See Deal PROS The mattress is very convenient for those with allergies due to its eco comfort system Miracoil zoned system provides long-lasting comfort The quilted cover is soft and comfortable to stay on CONS Some people complain that the mattress is way too hard OUR VERDICT If you like to have some extra firmness in your mattress, then this should be the appropriate choice for you. Type Sprung Mattress | Zoned Spring System Firmness Firm Features Fire-Retardant; Hypoallergenic Packing Flat, full size matress Weight 27 Kg Certification This product is suitable and tested for domestic use only to BS7177 Low Hazard requirements Warranty 5 years Silentnight 1400 Pocket UK King Size Mattress See Deal Happy Beds Calming 3000 Pocket Spring UK King Size Mattress See Deal Happy Beds Orthopaedic 2000 Pocket Sprung UK King Size Mattress See Deal Airsprung Revivo Luxury Pocket Memory Mattress UK King Size See Deal Silentnight Deluxe Sprung UK King Size Mattress See Deal Silentnight 1400 Pocket UK King Size Mattress READ REVIEWS & CHECK PRICE Silentnight 1400 Pocket UK King Size Mattress Right within your budget, this mattress is the kind that would keep your nights soft and comfortable – as if you were sleeping on a fluffy cloud. Hand-tufted for a supportive sleeping surface, this mattress is not only firm and orthopaedic in purpose, but it also feels very comfortable. As for the support, this mattress is perfect for your back. This mattress features 1400 Mirapocket springs – all of which take off the pressure from your body so that you can wake up without any pain. Despite being so affordable, this mattress is also hypoallergenic. This means that if you are struggling with asthma or any allergies, this mattress can make sure that your airways remain clean. You will have a good, restful sleep this way – which you may confirm with other reviewers by reading what they have to say on Amazon. Happy Beds Calming 3000 Pocket Spring UK King Size Mattress READ REVIEWS & CHECK PRICE Happy Beds Calming 3000 Pocket Spring UK King Size Mattress How many times have you felt like you could not breathe while sleeping on a mattress? No matter if it was because of a musky smell or the fact that you always felt hot throughout the night, you need a breathable mattress that can keep things fresh and cool. For this reason, this mattress features a cover that was made using double jersey fabric that received an Aloe Vera infusion. This will provide a deep sleep – a restful one that will allow you to feel refreshed in the morning. Aside from the inner pocket sprung design that provides individual support for each part of your body, this mattress also features memory foam and reflex foam layers. This should ensure that the mattress conforms to your body correctly so that your sleep is restful. You may confirm this by reading a few reviews on Amazon as well. Happy Beds Orthopaedic 2000 Pocket Sprung UK King Size Mattress READ REVIEWS & CHECK PRICE Happy Beds Orthopaedic 2000 Pocket Sprung UK King Size Mattress Nothing makes you happier than a good, comfortable bed. And when a bed features natural filling, you could become even more joyful. This is because the mattress will not contain anything that will cause your hair and skin to frizz. Featuring a Coolmax fabric with natural filling fabric, this mattress contains mohair, horsehair, lamb’s wool, but also cashmere. It was traditionally hand tufted for breathability and longevity, making the mattress a significant investment in the long run. The mattress is also very supportive, aside from being comfortable. Featuring 2000 individual springs that were given their own pockets, this mattress is very supportive all while being silent. If your partner tends to toss and turn throughout the night, you won’t even feel their movement as you sleep. You can find out more about the product by reading some reviews on Amazon. Airsprung Revivo Luxury Pocket Memory Mattress UK King Size READ REVIEWS & CHECK PRICE Airsprung Revivo Luxury Pocket Memory Mattress UK King Size Those of you looking for both comfort and support might like this mattress. Featuring a total of 682 individually pocketed spring coils, this mattress is not only highly supportive but also resistant to motion transfer. This way, if your partner tends to toss and turn a lot throughout the night, the chances are very high that you will not even feel their movement. This king-sized mattress has a medium feel – which means that if you like your mattress firm but do not want it feeling like a rock, then this item should undoubtedly be the choice for you. Plus, the 30mm of memory foam offers you the ultimate comfort so that you feel in as much support as possible. Last but not least, this mattress also features a Coolmax cover made to absorb your sweat – keeping your skin dry. This is a great and convenient choice during summer, but it is also highly efficient if you tend to sweat a lot during your sleep – summer or winter. You may find out some more opinions on this mattress by reading a few reviews on Amazon. Silentnight Deluxe Sprung UK King Size Mattress READ REVIEWS & CHECK PRICE Silentnight Deluxe Sprung UK King Size Mattress Do you tend to sleep more on your back and stomach, and do not feel like your old medium-feel mattress does you any good? Well, in this case, you might want to go for this Miracoil zoned system mattress – mostly because its firmness ensures that your back remains in a straight position. Featuring a smooth quilted cover, this mattress is also very comfortable to stay on throughout the night. Not only does it ensure a smooth sleeping surface, but it also gives you the cushioning that you need. It is also hypoallergenic, making it an excellent choice for those that are bothered by allergies. That being said, this mattress also features Eco Comfort. This means that the fibres ensure the breathability of the mattress – offering a good night’s sleep, along with extra support. You may read more about this mattress by checking out what people have to say on Amazon. Advantages of a UK King Size Mattress Not really convinced why you should try a king-sized mattress as opposed to a twin-sized model (or two of them placed alongside)? Well, here are a few advantages of why such a purchase would be so convenient for you. You get more space: How many times have you slept uncomfortably throughout the night, simply because you felt like you did not have the space necessary? Well, a king-sized mattress should give you the space that you need. You get luxury: Aside from receiving comfort, you also receive luxury. If you go for a thicker king-sized mattress, then you would get the feeling that you would typically experience in a luxury hotel. There are many choices for you: Regardless of the model that you may choose, you can be sure that it will almost always feature a king-size as well. This gives you plenty of choices to go for. King-sized mattresses are very comfortable and convenient choices overall, which makes them an excellent investment for any kind of sleeper. Things to Consider When Shopping for a King-Size Mattress When you are looking for a king-size mattress, there are several aspects that you might first want to keep in mind. These aspects include: Firmness Level How do you generally prefer to sleep at night? If you are a back or stomach sleeper, then you might want to go for a firmer mattress. On the other hand, if you are a side sleeper, you should choose a medium-firmness mattress, as it will not put your body under as much pressure. Materials and Layers Do you want your mattress to be more supportive, or are you more concerned with the comfort level? Generally speaking, if the emphasis is placed on the springs, then the mattress will be much firmer. On the other hand, if the focus is mostly placed on the foam, there’s a chance the mattress will feel a bit softer. You just need to determine for yourself how you wish to sleep throughout the night. Type of Foam If you have determined that a foam mattress is what you are after, now you have to think about what kind of foam do you want. Polyfoam is cheaper and supportive, whereas convoluted foam is an excellent choice for heat dissipation. However, many people nowadays prefer memory foam due to its ability to contour around your body. Warranty The last thing you want it to pay money on a relatively cheap mattress, only to find out that it’s no longer any good after only a short time of use. This is why you need to look for a mattress with excellent warranty coverage. The average mattress features a 2-5 year manufacturers warranty, but some manufacturers provide even more excellent coverage. Final Thoughts You can buy quality mattresses for just under £400. You just need to make sure that you are looking at the right factors, and that you read as many reviews as possible. The key to being comfortable at night is to do your research and find the best mattress for you.