Best mattress deals 2025

Is your old mattress sagging and making you uncomfortable? Check out the best mattress deals we've rounded up and wake up feeling fresh.

Our carefully curated list of the best mattress deals will save you time, effort, and money, and help you spot the genuine bargains.

For more tips on choosing your perfect mattress, see our guide to the best mattresses.

Best mattress deals for December 2025

Prices and deals are correct at the time of writing, but deals can change or end at short notice. Always check the deal's T&Cs before you buy. All prices quoted are for a standard double mattress.

Our guide to UK bed sizes and our best mattresses guide will help you choose the right one for your bed.

See all the double mattresses we've tested by going to our mattress reviews.

* References to ‘Average price' and 'Cheapest price' are based on Which? market knowledge and information supplied by our partners. Prices are checked for the six calendar months prior to publication. Not all retailers are included in our checks.

Our pick: Eve Original Mattress

Average price in the past six months: £481
Cheapest price in the past six months: £318

• Double
• Foam

We like: The 200-night sleep trial

We don't like: Free returns up to 40 nights only

The Eve Original mattress is currently on offer for £389 for a double - that's 40% off, according to Eve. We spotted this mattress on sale during Black Friday for £389, too. 

This simple foam mattress is made from three layers of foam, including a layer of memory foam. The removable cover is washable, which is handy. 

Despite the layers of foam, which do suck you in a little bit, this mattress is rated 'average' for how much warmth it traps around you and it's breathable, too.

Do you love sleeping on your side? Find out if this mattress will support you as you sleep, read our full Eve Original mattress review.

Best mattress deals: £200-£299

SleepSoul Heaven

Average price in the past six months: £256
Cheapest price in the past six months: £208*

• Double
• Pocket springs and foam layers

We like: It's light and easy to rotate to even out wear and tear

We don't like: It's a bit bouncy

The SleepSoul Heaven is a pocket sprung mattress covered with multiple layers of foam, including a pillow top, and layers of ‘coolgel’ foam. These are designed to help provide a supportive, cool,  comfy and breathable surface to lie on. 

It’s a boxed mattress, which arrives rolled up, making it much easier to get to the room of your choice. It's been on sale for quite a while, so you'd have to assume it must have been getting something right, or is it just the keen price that keeps customers coming back for more?

Read our full Sleepsoul Heaven review to see if it has any drawbacks.

Best mattress deals: £300-£599

Memory Foam Warehouse Coolmax Hybrid

Average price in the past six months: £525
Cheapest price in the past six months: £390*

It's still on offer, so get it for £390 at Memory Foam Warehouse.

• Double
• Mini pocket springs and memory layers

We like: It has a 100-night sleep trial

We don't like: It's rather bouncy

Black Friday is over, but this mattress is still on offer. It's a good price for this mattress, but it's been on offer before so don't be pressured into buying it straight away.  

This is quite an unusual hybrid mattress as the foam layer is much thicker than the springs - usually it's the other way around. Its 17cm foam base has a 4cm layer of pocket springs above it, followed by a further 3cm section of memory foam on top, closest to the side you lie on. 

The manufacturer classes it as a medium-firm mattress and our tests agreed with this description. It has a removable washable mattress cover, which can help you banish those allergy-causing dust mites from the bedroom.

Our full Memory Foam Warehouse Coolmax Hybrid review outlines the pros and cons of this mattress.

EZE Hybrid Ultra Mattress

Typically on sale for £599, the double mattress is still available for £539 (10% saving) at EZE.

• Double
• Pocket sprung

We like: It's easy to turn over on

We don't like: The cover isn't removable for washing

One of the most popular mattresses on the Which? website, the EZE Hybrid Ultra double mattress, is described as a hybrid, but the large pocket spring core means we class it as pocket sprung, despite the foam layers. 

The foam layers won't suck you in, and it's breathable, so if you do tend to sweat or have hot flushes, the cover does a good job of wicking away moisture. 

Bought direct from EZE, it's delivered vacuum-packed in a box. Delivery is free, but there's no trial-night offer. You can, however, return it within 14 days of buying as part of the Consumer Contracts Regulations – just keep the original box. 

It comes with a 10-year warranty.

Read our full EZE Hybrid Ultra Mattress review to find out if you'll get a decent night's sleep.

Best mattress deals: £600 and up

Simba Hybrid

The Simba Hybrid is still on sale for £589 at Land of Beds in its 'Extended Winter Sale'.

• Double
• Memory foam and springs

We like: A 10-year warranty is included

We don't like: It feels a bit bouncy

Introduced in 2023, the Simba Hybrid is an update to the Simba Original Hybrid. It's made in the UK and is delivered rolled up in a box. If you decide it's not for you, you can return it for free within the 200-night trial.

The mattress is composed of a 2.5cm layer of recycled foam, covered by 16cm pocket sprung core, then 2cm standard polyurethane foam. There's another 2.5cm mini pocket spring layer on top, along with 2cm of Simbatex high-resistance polyurethane foam. When it comes to firmness, our independent tests rated it as 6, on a scale of 1 (very firm) to 10 (very soft).

Read our Simba Hybrid mattress review to see how it fared in our tests.

Looking for something specific? We have guides to the best pocket sprung mattresses, best memory foam mattresses, best hybrid mattresses and the best mattresses for back pain.

How to spot a good deal on a mattress

Lisa Galliers, Which? mattress expert, says:

'Let's face it, the mattress market is not known for being short of a deal or two. We see deals on mattresses every month, so our advice remains the same: if you need a new mattress, don't buy one purely because it's on sale.

Don't rush to buy a mattress purely because it's on sale, as there are plenty of discounts throughout the year. Some of the mattresses in this round-up have been available at the offer price for a while, but are still a good price.

We've also tested a range of good-value mattresses from brands that don't usually offer discounts – so if you want to keep costs down, you can still pick up a decent model for a fraction of the price of some.'

Not happy with your current mattress? You might be able to return it. Find out how to return a mattress. Can't return it? Find out how to get rid of your mattress, including options to recycle or donate it.

How to get the best deals on specific mattress brands

Whether you're after a new double mattress or want to swap your old mattress for a new memory foam one, it's worth keeping an eye out for sales on your favourite brand's website. Social media can also be a good place to spot a bargain. 

Offers come and go throughout the year, but the deals might not be on the particular mattress you want, so check the T&Cs. 

Make sure you're ready when the discounts start. Compare mattresses to find out which ones will be a dream and which could turn into an expensive nightmare – and don't forget that retailers might have other sales in-store.

Dormeo mattress deals

You might have spotted Dormeo mattresses on TV or via ads popping up on Facebook – we've seen a range of deals available, along with free gifts such as pillows and duvets on top of existing price reductions. 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. 

We'd suggest you check the website as a starting point. We've seen discounts of up to 60% in the past.

Read our Dormeo mattress reviews.

Emma mattress deals

The Emma Original mattress used to be one of the most popular models on the Which? website. But while it scored well in our lab tests overall, we're not currently recommending any Emma mattresses as Best Buys because the brand is being taken to court by the Competitions and Markets Authority (CMA) regulator over its online sales practices.

Read our Emma mattress reviews.

Eve mattress deals

Another bed-in-a-box mattress brand, Eve is now owned by Bensons for Beds. You can find deals on the Eve Sleep website and at other retailers. It offers a 200-night sleep trial, so you can try out the mattress and, if you don't love it, send it back free of charge within 40 days. 

Be warned, though – if you buy an Eve mattress via another retailer, such as Argos, the trial-nights offer might not apply.

As a guide, we've seen deals offering 20-30% off and up to as much as 50% on occassions. Check the T&Cs before you buy, as these discounts often apply only to certain models, if you spend above a particular amount or for new customers. Eve seems to swap deals fairly regularly between its mattresses.

Read our Eve mattress reviews.

Ikea mattress deals

You might not see Ikea mattresses on offer, but that's because they're generally good value for money at full price. We've got 12 of them on our website, ranging from £99 up to around £689, with an average price of £312.

Not sure which one to go for? Head to the top five most popular Ikea mattresses to choose from there.

Read our Ikea mattress reviews.

Simba mattress deals

Simba is another brand that's no stranger to a deal, and one that's also been at the centre of a (now resolved) CMA investigation into sales tactics. Simba mattresses arrive vacuum-packed in a box to your door; the company offers free returns and its website states that it won’t ask you to get the mattress back in the box for the return journey. 

We've spotted a range of deals from Simba offering 25-40% off. As a rule, 30-35% off is a good deal. Do check the T&Cs, though.

Read our Simba mattress reviews.

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Are mattress sleep trials worth it?

Sleep trials – commonly offered by online-only, bed-in-a-box mattress brands – give you time to try out a mattress to see if it's the right one for you. If you don’t like it, you can return it within the trial period. 

This can be useful if you're not sure which type of mattress will suit you best.

A long sleep trial lets you try your mattress during different seasons and gives you time to adjust, which is particularly important if you’re switching from springs to foam. If you experience back pain, for example, it could take a while to get used to a new mattress.

Not all sleep trials are the same, though, and some have strings attached. 

If you're buying a mattress that offers a sleep trial, check the T&Cs first. See how many nights you'll be able to keep it for, whether you need to use a mattress protector and how to return it if it's not right for you.

Also, bear in mind that if you buy from a third-party retailer, the terms of a sleep trial – and whether it's offering one at all – might differ from those you get if you buy directly from the brand. 

Read more about mattress sleep trials and find out which brand offers the longest.

Where's the best place to buy a mattress? 

Retailers also offer their own deals throughout the year. We've listed some retailers below to get you started. Check T&Cs for deals before you buy.

• Argos
• Bensons for Beds
• Dreams
• Furniture Village
• John Lewis & Partners
• Mattress Online

To find the best shops to buy a mattress, we surveyed 1,800 Which? Connect panel members in October 2023. We asked how satisfied people were with their shopping experience from mattress retailers, both in-store and online. 

Our latest survey of the best mattress brands rates mattress shops including Emma, Eve, Ikea and John Lewis on the quality and range of their products, as well as on advice and delivery. It also reveals that Which? members are divided on where they shopped for their mattresses: 47% bought theirs in-store, while 53% shopped online.  

Revamping your bed? See our guides to the best mattress toppers and the best mattress protectors.