We use cookies to allow us and selected partners to improve your experience and our advertising. By continuing to browse you consent to our use of cookies. You can understand more and change your cookies preferences here.

Coronavirus Read our latest advice
Reviews based on facts
Our rigorous tests find the facts, and our impartial reviews tell you the truth about how products perform. First month £5, then £9.99 per month, cancel anytime.
Try Which?

When you click on a retailer link on our site, we may earn affiliate commission to help fund our not-for-profit mission.Find out more.

9 April 2021

Best mattress deals for 2021

Best mattress deals, including pocket spring, memory foam and hybrid mattresses from a range of brands, including Emma, Simba, Eve, Ikea and many more, picked by Which? mattress experts
best mattress deals
Lisa Galliers

Deals updated: April 2021

Looking for a better night's sleep? Find out how to get a decent mattress at a dream price with our round-up of the best deals you can find right now. We keep an eye on the discounts so you can avoid a costly nightmare when choosing your next mattress.

Whether you want a traditional pocket-sprung mattress, a memory foam mattress or maybe something in between, such as a hybrid mattress, there are plenty of discounts to be had throughout the year. But it can be hard to know which ones are actually worth it, or the right time to buy.   

If you have your eye on a particular brand, or just need to upgrade your sagging old mattress, our expert pick of the deals available this month will help you find a mattress without paying thousands of pounds. And if you're not quite ready to upgrade, read on for our top deal-spotting tips.


Unsure what mattress you want? Discover how to buy the best mattress.


Best mattress deals for April 2021

Our mattress experts have been keeping a close eye on the mattress deals popping up over the month to bring you this round-up of the best we've spotted. Each mattress listed below has scored well in our independent tests, but they may not all be the very best mattresses we've tested. We recommend you check our thorough reviews before you buy to make sure the mattress is right for you. 

Due to Covid-19, some mattress deliveries may be delayed, so check this before you buy. 

1. Emma The Original mattress - 41% off

  • We like: Can be used on most bed bases, not too warm to lie on, 200 night trial, it doesn't need to be flipped over
  • We don't like: Only available online

One of the most popular mattresses on our website, Emma has a egg-cellent Easter deal on offer at the moment - using code FBEASTER41 will get you 41% off the Emma Original mattress at the moment, bringing the cost down to £382.91 from £649. We also spotted a few codes for 42% on social media. This discount is the biggest discount we've seen for a while. Emma was offering 35% off in Feb, plus a couple of occasions where there's been a discount of 40% off (Valentine's Day and Mother's Day), so 41% or 42% if you come across one of the codes,  are good deals. The mattress is made up of a 19cm foam core, with an additional 2cm layer of memory foam and 4cm layer of ordinary foam. Unlike some bed-in-a-box mattresses, Emma says this one can be used with an electric blanket.

Read our full review of the Emma Original mattress.

Or buy it now at Emma

2. Eve the Original mattress – 30% off

  • We like: You don't need to turn this mattress over, can be used on any bed base, not too warm to lie on
  • We don't like: Only available online

Eve is, once again, offering 30% off its Original mattress. This is the same discount as was offered back in March and we also spotted 30% off in February, too. And it's better than the 20% Black Friday discount. There's no code, the website automatically adds the discount, bringing a double mattress down to £489 from £699. This mattress has an 18cm foam core, on top of which sits a 3cm layer of memory foam and a further 3cm of 'open cell hybrid foam'. Eve says this mattress 'supports your body so perfectly, uou'll -wake up dancing' . Eve also describes this mattress as medium-firm - in our own firmness tests, it ranked as a 5.4 on a scale where one is the firmest and 10 the softest.

Read our full test review of the Eve the Original mattress.

Or buy it at Eve Sleep now.

3. Ergoflex 5G Memory Foam Mattress - 40% off

  • We like: Doesn't feel too warm to lie on, 30 night trial offer, free returns
  • We don't like: It's not the lightest

ErgoFlex claims its 40% off discount is its 'Best-Ever Discount'. Using offer code SAVE40 the price of this mattress drops to £444 (from £739) a saving of £295. We've spotted this 40% discount since December, but saving nearly £300 on a mattress is not to be sniffed at. This memory foam mattress from Ergoflex, is a one-sided mattress made up of three layers of different density foam - a 9cm foam base, a 5cm layer of memory foam in the middle and a further 9cm layer of memory foam on top. Ergoflex deliver it for free and will even collect it for free if you decide you don't like it after the 30 night trial. You do have to sleep on it for at least 21 nights before returning it, though.

Read our full ErgoFlex 5g Memory Foam mattress review.

Or buy it at ErgoFlex now.

4. Simba Hybrid mattress – 26% off

  • We like: 200-night trial, free returns, not too hot to sleep on
  • We don't like: Only available online

Simba's 35% Easter discount has now ended, but is now offering 26% off mattresses for new customers. Simba has previously offered 30% and 25% off. It's currently down to £591.26 (from £799). The Hybrid is made up of several layers including a zoned support base, a mini pocket-spring layer and a foam topper. This bed-in-a-box mattress is delivered vacuum-packed in a box to your door and comes with a ‘risk-free’ 200-night trial. If you decide to return it, Simba offers a free return and it won’t even ask you to get the mattress back in the box. 

Read our full Simba Hybrid mattress review. 

Or buy it at Simba Sleep now.

5. Sleepsoul Space 2000 pocket-sprung – 44% off

We like: It's not too hot to sleep on, doesn't need turning over

We don't like: The claimed firmness didn't match up to our assessments

If you're a fan of pocket-sprung mattresses, rather than foam mattresses, the Sleepsoul 2000 pocket-spring pillow-top mattress may appeal. This mattress has 2,000 pocket springs in its core, with a 2.5cm layer of mini pocket springs closer to the surface, combined with a pillow top, which Sleepsoul says will 'support you where you need it most'. At the moment, it's still on sale at Happy Beds for £349.99 instead of the usual £629.99. 

Read our full Sleepsoul Space 2000 pocket-sprung mattress review.

Or buy it at HappyBeds now. 

How to get the best deals on specific mattress brands

If you're desperate for an Eve mattress, or have your eye on a Simba, or maybe you just want to swap your old one for a new memory foam mattress, then it's worth keeping an eye out for mattress sales on your chosen brand's website. Social media is usually a good place to spot a deal. 

From what we've seen, deals and offers pop up throughout the year. But, be warned, the deals may not be offered on the particular mattress you want, if you have a specific one in mind. 

Make sure you're prepared when the discounts start. Compare mattresses to find out which mattresses will be a dream and which ones could turn into an expensive nightmare. 

Dormeo mattress deals

You may have spotted Dormeo mattresses on the telly, or ads popping up on Facebook, and generally we've seen a range of deals on offer. Last Easter it was offering free gifts such as pillows and duvets on top of existing sale reductions. And although its mattresses can be found through other retailers, in the past we've noticed that buying direct from Dormeo can sometimes save you a small amount in addition to any free gifts it may be offering. This means it's worth checking its website out as a starting point, before comparing deals. Recently it had sales of up to 60% off.

Read our Dormeo mattress reviews

Emma mattress deals

The Emma mattress is one of the most popular reviews on the Which? website, this bed-in-a-box brand delivers its rolled up mattresses direct to your door, and comes with a trial nights offer (currently 200 nights). There are three mattress in its range and from what we've seen, a variety of deals are available during different months, so it's worth keeping an eye on the website, or social media. We've seen discounts up to as much as 45%, so this is a good guide if you're after an Emma mattress but aren't sure when to take the plunge.

Read our Emma mattress reviews

Eve mattress deals

Eve is another bed-in-a-box mattress brand. Mattress deals can be found on the brand's Eve Sleep website, or via some retailers, such as Next. Similar to Emma mattresses, Eve also offers trial nights so you can try the mattress. Currently this is 100 nights, and if you don't love it you can send it back and Eve says returns are free. We've seen offers ranging from 20% to 30% off, but offers can be on certain mattresses only. So check the T&Cs before you buy.

Read our Eve mattress review.

Ikea mattress deals

You may not see Ikea mattresses discounted on sale, but that's because these budget-friendly options are generally good value even when bought at full price. We've tested 13 different mattresses ranging from as little as £99 up to over £600, with an average price of just £284. Some of them even make the grade as a Best Buy.

Read our Ikea mattress reviews

Simba mattress deals

Simba mattresses arrive vacuum-packed in a box to your door, and the three mattresses currently in its range come with a 200-night trial. Simba offers free returns. Its website states that it won’t even ask you to get the mattress back in the box for the return journey. We've spotted a range of deals from Simba, offering between 25% and 35% off, but sometimes we've spotted there's some sort of condition, such as a minimum spend or a discount on a particular mattress.

Read our Simba mattress reviews

When and where are the best mattresses on sale? 

A decent mattress is key to getting the support you need, but don't lose sleep if your mattress budget isn't that big. As we've mentioned above, brands seem to have a fair few sales sprinkled across different months, but retailers will also offer their own mattress deals throughout the year. We've listed some below to get you started.

Argos mattresses

Bensons for Beds mattresses

Dreams mattresses

John Lewis mattresses

Mattress Online mattresses

Black Friday: the best time to find a great cheap mattress?

A new mattress can be an expensive purchase, but we think it’s always worth shopping around to find a bargain. 

And we advise not rushing into buying anything just to make the most of the sale price. 

While you’ll see a flurry of special offers and discounts as the annual Black Friday approaches, not all Black Friday deals are good value. We're seeing some deals offered around Easter 2021, which match those offered at Black Friday.

Mattresses are often on sale, and big sales periods include Easter, Christmas and the new year. Provided your current mattress is still serviceable, it’s worth waiting to find a mattress that will improve your quality of sleep for years to come.

Whatever you buy, it won’t matter how much money you’ve saved in a Black Friday deal if the mattress you end up with isn’t suitable for how you sleep. Read our mattress reviews to find the perfect mattress for you.

Prices and deals correct at the time of publication. Both may change.


View all Mattresses