We value your privacy

Our website uses cookies to enhance your experience, serve personalized ads and analyze our traffic. To learn more, see our Cookie Policy

Save big and get FREE delivery! Ends in

Double Mattresses

When it comes to double mattresses we have hundreds of different brands and styles in stock. Choose from pocket sprung, latex, orthopaedic or memory foam double mattresses. Take your pick from a variety of leading brands, which include Sleepeezee, Rest Assured, Sealy, Silentnight and many more.

Show more
250 results


Trustpilot Star rating

Based on 22,124 reviews

Trustpilot Star rating Verified

It was very easy to order, with great prices. Delivery was quick, received text and was called before delivery on timings. Great service and would recommend mattress nextday.

Jc 11th Apr
Trustpilot Star rating Verified

I have used this company in the past and I am never dissapointed. Beautiful mattress arrived promptly and delivered by polite and courteous delivery drivers. My mattress was even better than I expected for the price I paid. Would recommend this company very highly.

Mrs D From Cambridge 11th Apr
Trustpilot Star rating Verified

Perfect experience. Sitting at home on a saturday optimistically googling fast delivery mattress and mattressnextday popped up. A zip and link superking size isnt the easiest thing to find quickly. 8am on monday two nice gents took away my old one and delivered a really nice sleepezee firm mattress on time and with no fuss. Just a big thank you for such a unique company when everyone else was 1-6 weeks.

Mr C Roberts 11th Apr

Help & Buying Guides

Finding your perfect double mattress

Whether you simply love that feeling of space or are snuggling up with your partner, you can’t beat a double mattress. It’s the most popular size of mattress in the UK, and is large enough to give you plenty of room to get really comfortable, but won’t overwhelm the average-sized bedroom. That makes double beds a ‘just right’ size for almost any household.

Double mattresses measure a standard 4’6” wide by 6’3” long (135cm x 190cm), so they’re large enough to cater for most average-sized sleepers. If you’re six feet or under then a double mattress should be long enough for you to stretch out and relax without your feet poking through the bottom of the duvet!

Double mattresses come in a huge variety of compositions, designs and firmness ratings, so there’s plenty of choice on offer. They’re produced by some of the largest and most respected names in bedding, including Silentnight, Dormeo, Sealy and Sleepeezee, as well as some luxury brands such as Tuft & Springs and Harrison Spinks. All of these mattresses have one thing in common – they’re designed to give you the best night’s sleep possible.

What's size is a double mattress?

A double mattress size is 4ft 6" by 6ft 3" long (135 x 190 cm). Compared to a small double mattress, a double mattress is 15 cm wider. If you purchase a double bed frame, then the double mattress size is what you will need to fit. Double mattresses are widely available and are the most common mattress size in the UK. This 4ft 6" double mattress is particularly popular among couples as they can comfortably accommodate two adults, plus, they work great with our range of double divan beds.

What is the difference between a double memory foam and a double pocket sprung mattress?

Our two most popular double mattresses include memory foam and pocket sprung technology. However, there are key differences between these two that you should factor in when purchasing your new product.

Double pocket sprung mattress

Pocket sprung mattresses are formed of 1,000 - 2,000 individual springs. These springs move individually to provide more comfort to the body's contours when sleeping. Double pocket sprung mattresses tend to be bouncy, which is perfect for those that prefer a springier feeling as opposed to a sinking feeling. Pocket sprung mattresses are great for ventilation and regulating heat. The spring and fibre combination allows air to move freely and create a comfortable temperature throughout the night.

Memory foam mattress

Double memory foam mattresses are on the firmer side and are ideal for those that prefer a bed they can sink in to. The material transforms to the shape of your body's natural contours for a more tailored sleeping experience. Double memory foam mattresses are particularly great for couples that vary in weight. Because the memory foam adapts to your body, it's a great all-around mattress. Providing support and sinking where needed. A completely custom experience for any shape or sized person. Both styles have their strengths and as always, it comes entirely down to personal preference.

If you’d rather have a different type of mattress, other popular options include latex mattresses, orthopaedic mattresses and organic mattresses, which are ideal if you suffer from allergies.

How often should I replace my double bed mattress?

As a general rule, the Sleep Council recommends replacing your mattress every 8 years. However, it's best to use your judgment. If there is visible dipping in the middle, or if you can feel the springs through it, then it's time for a new one. If your mattress is pinging or creaking when you move it's advised to get a replacement.

To prolong your double bed mattress lifespan, it's recommended you rotate it 180 degrees, every 3 months. This is because we often sleep in the same spot on the bed every night which leads to general wear and tear. Turning the mattress essentially gives the side you slept on a chance to recover and spring back to life.

Mattress protectors also help increase longevity and prevent the risk of dust buildup. Which in turn can cause allergies, bed bugs, and illnesses to arise. In general, protectors are there to keep your mattress hygienic and feeling like new for longer.

How much do double mattresses cost?

The price of a double mattress will entirely depend on what type of mattress you go for, and how much you want to spend. Budget mattresses are usually made using an open coil spring matrix. This is the most traditional method of mattress making, and provides years of comfort and support if maintained properly. An open coil double mattress will cost around £130-£150.  

Pocketed spring mattresses have a core of individually pocketed springs, which cut down the amount of movement transference. They’re perfect for couples, and cost around £200 - £300, depending on those extra layers. If you want a more luxurious feel, you can pay more for those that use layers of natural wool, cashmere or silk. 

Memory foam mattresses are technologically advanced and super comfortable. They’re also convenient as they come boxed and rolled, making them easier to move. They can range in price from around £300 for a basic model, all the way up to over £1,000 for a top-of-the-range Octaspring option. 

Cost will also depend on the size – a standard double bed mattress will be cheaper than a large double or European sizes.  

It’s always worth looking out for special offers on double bed mattresses that could save you a lot of money, especially for more expensive mattresses. In some cases, you could cut the cost of your mattress in half, enabling you to buy a better quality mattress for a better night’s sleep. 

Size Imperial Metric
Cot Mattress 3'9" x 1'9" 120cm x 60cm
Cot Bed Mattress 4'6" x 2'3" 140cm x 70cm
Adjustable Small Single 2'6" x 6'6" 75cm x 200cm
Adjustable Single 3' x 6'6" 90cm x 200cm
Adjustable Small Double 4' x 6'6" 120cm x 200cm
Adjustable Double 4'6" x 6'6" 135cm x 200cm
Small Single 2'6" x 6'3" 75cm x 190cm
Single 3' x 6'3" 90cm x 190cm
Small Double 4' x 6'3" 120cm x 190cm
Double 4'6" x 6'3" 135cm x 190cm
King Size 5' x 6'6" 150cm x 200cm
Super King 6' x 6'6" 180cm x 200cm
European Small Single 2'8" x 6'6" 80cm x 200cm
European Single 3' x 6'6" 90cm x 200cm
European Double 4'7" x 6'6" 140cm x 200cm
European King Size 5'3" x 6'6" 160cm x 200cm

All mattress sizes given are approximate and stated sizes refer to the sleeping surface only. Mattresses sizes may vary slightly from their stated dimensions due to manufacturing tolerances, please allow +/- 2 inches (5cm).

Support Best for
 Icon for Memory Foam Memory Foam Body moulding and pressure relieving
 Icon for Natural Fibres Natural Fibres Unrivalled comfort, naturally temperature-regulating
 Icon for Latex Latex Breathable, supportive and eco friendly
 Icon for Cool Gel Memory Foam Cool Gel Memory Foam Active cooling properties, ideal for hot sleepers
 Icon for Soft White Fibres Soft White Fibres Hypoallergenic polyester, soft and durable

Support Best for
 Icon for Pocket Springs Pocket Springs Individual springs for tailored support
 Icon for Foam Foam Conforms to your body's shape, silent (no springs)
 Icon for Open Coil Springs Open Coil Springs Traditional, interlinked springs
 Icon for Pocket Springs Latex Bouncy yet supportive, great for hot sleepers

Firmness Best for
Good for side sleepers, a softer level of support
Good all-rounder for front, side or back sleepers
Medium - Firm
Good for people who change sleeping position
Good for people who sleep on their front or back
Extra Firm
The firmest level of support, also known as orthopaedic