Top 10 mattresses for 2021

This impressive mattress aced our tough tests. It's supportive, stable, breathable and long-lasting. It's one of our highest-scoring mattresses from this bed-in-a-box brand.

As far as we’re concerned, this pocket sprung and memory foam hybrid is the best mattress money can buy right now. It provides good support whatever position you sleep in; it’s excellent at preventing the transfer of movement from one side of the bed to the other; and you can sleep safe in the knowledge that it will stand the test of time without sagging, softening or becoming less supportive.

If you’re looking for a foam bed, you can’t go far wrong with this reasonably priced mattress. It didn’t do poorly in a single one of our tests - it’s supportive, breathable and suitable for light sleepers and it will stay that way for years to come.

This mattress is a trendy, bed-in-a-box that’s only available online. But don’t let that put you off - there’s a 100-night trial period, during which you can send it back for a full refund if you don’t find it comfortable. If you do like the feel of it, though, you can sleep safe in the knowledge that you’ve bought an exceptional mattress. It's supportive, won’t sag or soften with time and, unlike some foam mattresses, this one doesn’t restrict your movement at all. That's why it's one of the best mattresses we've tested.

This mattress is a great all-rounder with no major flaws, but it's particularly well-suited to light sleepers and people who usually sleep on their back. It's also extremely durable and exceptionally stable, meaning you shouldn’t be disturbed when your partner rolls over or gets up during the night. It's not the easiest to turn on though so if you like to move around while getting comfortable then you may want to choose another option.

This high-scoring Best Buy is durable - our tests simulate approximately 10 years of use, and this mattress was excellent. Even after years of use, it won't sag, soften or become less supportive. This mattress will provide good support if you tend to sleep on your side or your front, and you'll get great support if you sleep on your back.

This pocket sprung and foam combination mattress really impressed in our tests. It's supportive, stable, breathable and easy to turn on. It also gets five stars across the board in our durability testing, so you can be confident that even after years of use, it will be just as supportive as when you first unwrapped it and that it won't sag or soften.

This popular bed-in-a-box mattress is a Best Best because it’s durable, won’t sag or soften over time, and it provides good support, especially if you’re a fan of sleeping on your back or front. Turning over on this mattress isn’t a problem and this mattress is good for stability, which means if you fidget in your sleep you won’t disturb anyone next to you.

This simple memory foam mattress is affordable and a great Best Buy option if you usually sleep on your front or your back. It has a 7.5cm foam core and another 10cm layer of viscos foam on top. This top layer of memory foam will envelope your body, while this will help stop the transfer of movement across the bed (great news for your bed fellow) it does make it harder to turn over on.

We first tested this mattress in 2015, and it was one of the best we had seen in years. Several years on, we’re still yet to test a pocket sprung mattress that can match this Best Buy. This mattress contains several layers of foam, which may not be to everyone’s liking, but you’re in luck if you like the feel of it in the shop. You can sleep well in the knowledge that this mattress will support your spine for years to come without sagging or softening. It’s also a good bet for both restless and light sleepers because, while it’s very easy to turn on, it also does a great job at absorbing bounces.

Despite coming from a well-respected brand, you'll want to think twice before buying this mattress. It provides poor support for people sleeping on their back and, over time, the support for back-sleepers becomes even worse while the mattress also sags dramatically.

Despite decent support in most positions when new, this is a poorly-scoring mattress, mainly because it’s very bad at preventing the transfer of movement and it sags significantly over time. It's worth avoiding.

This mattress isn't all bad, it's easy to turn on and doesn't get softer after years of use, but it's unsupportive and will sag with time, and these key flaws make this one of the lower-scoring mattresses we've seen.