Super King Mattresses

Best Super King Mattresses UK (2024)

Last updated: 31.10.2023 Reading time: 10 Min.

Who wouldn't want to sleep like a (super) king? 👑

In the UK, super king mattresses, which measure 180 x 200 cm (6' x 6'6"), are the most common.

But while you may have already decided on the mattress size you want, width and length aren't the only factors you need to consider before making your purchase.

So, in this guide, we'll take you through everything you need to pay attention to before buying your new mattress.

We'll even give you some recommendations for the best super-king mattresses in the UK!

So let's dive straight in 🤿

180 x 200 cm Super King Mattresses

Our top recommendations

Sleep Hero Favourite

Simba Hybrid

The Simba Hybrid mattress is a high-quality pocket-sprung mattress with multiple layers of foam.
  • Simbatex & Aerocoil springs
  • 25 cm (10 inches)
  • Medium-firm 

Tell me more about the Simba Hybrid

The Simba Hybrid is an award-winning hybrid pocket sprung foam mattress by Simba Sleep. 

This is a medium-firm mattress that's an excellent choice for a wide range of sleepers but is particularly suited to side sleepers. 

The Simba mattress is supportive enough to prevent a build-up of tension but also soft enough to allow your body to sink in where necessary.

This allows for optimal spinal alignment. 

The Simba Hybrid mattress comes with an antibacterial hypoallergenic cover, which is removable and machine-washable.

The Simba comes with free delivery, a 200-day risk-free trial period, and a 10-year guarantee. 

Reasons to buy

200-night sleep trial

10-year guarantee 

Excellent support for side sleepers 

Washable cover 

Reasons to avoid

May be too soft for larger builds

Luxury Option

DreamCloud Luxury Hybrid

The DreamCloud Luxury Hybrid mattress is a 5-layered premium mattress.
  • Memory foam & pocket springs
  • 28 cm (11 inches)
  • Medium-firm

Tell me more about the DreamCloud Luxury Hybrid

The DreamCloud Luxury Hybrid is a premium mattress from the same company that makes the Nectar memory foam mattress.

It combines high-quality memory foam with full-size pocket springs (called ActiveEdge coils), each measuring 15 cm (5.9 inches).

This is an orthopaedically designed mattress with medium-firm support to help eliminate back, neck, and shoulder pains.

The mattress offers enhanced breathability to help keep you cool and refreshed all night long. 

It also has low motion transfer and great edge support, making it an excellent choice for couples.

Reasons to buy

365-day trial period

Lifetime warranty

Excellent motion isolation for couples

Reasons to avoid

Extra deep sheets required 

Too firm for lightweight side sleepers

The cover is not removable 

Best For Back Sleepers

Emma Luxe Cooling Mattress

The Emma Luxe Cooling Mattress is made with temperature regulation technology.
  • ThermoSync foam, memory foam, & pocket springs
  • 25 cm (10 inches)
  • Medium-firm

Tell me more about the Emma Luxe Cooling Mattress

Emma Sleep's most advanced Luxe Cooling mattress combines six layers of foam and springs for medium-firm support.

It ensures optimal spinal alignment with targeted support and sufficient push-back to prevent excessive sinking.

The mattress offers exceptional edge support, a standout feature not common in bed-in-a-box options.

It features enhanced temperature regulation technologies, so you won't feel as hot and clammy on this mattress as you may feel on other Emma memory foam mattresses.

The machine-washable cover is ideal for allergy sufferers and hygiene maintenance.

Delivered compactly rolled in a box, though it is notably heavy for easy manoeuvring.

Reasons to buy

200-night trial 

10-year guarantee

Excellent edge support 

Reasons to avoid

The foams retain some heat and feel warmer than non-memory foam products

We experienced some delivery issues during testing 

Best Trial Period

Eve Wunderflip Premium Hybrid Sleep

The Wunderflip Premium Hybrid is made with luxurious foam and spring layers.
  • Memory foam & pocket springs
  • Medium/firm 
  • 28 cm (11 inches)

Tell me more about the Wunderflip Premium Hybrid Sleep Mattress

The Wunderflip Premium Hybrid Sleep Mattress is one of Eve Sleep's most luxurious mattresses.

The firmer and softer memory foam layers are adaptable to your desired comfort levels. 

It includes a dual spring system and a reactive spring layer to support the entire body and prevent you from feeling your partner's movements. 

The double-sided mattress has a firm and medium side, which you can flip over to suit your requirements.  

It also has exceptional motion isolation, making it a great choice for couples. 

The removable cover is treated with Purotex+, which is certified by Allergy UK. 

Reasons to buy

200-night trial period 

10-year guarantee

Advanced & adaptable comfort 

Reasons to avoid

The cover is not washable 

More expensive than other Eve mattresses

Best Guarantee

Nectar Premier Hybrid

The Nectar Premier Hybrid combines pocket springs, micro springs, and memory foam.
  • Memory foam, micro springs & full-size pocket springs
  • 28 cm (11 inches)
  • Medium-firm support 

Tell me more about the Nectar Premier Hybrid

The Nectar Premier Hybrid mattress is one of Nectar's best-selling medium-firm mattresses, designed for superior comfort and support for all body types. 

This mattress has been designed with enhanced cooling in mind, wicking away moisture and allowing for greater air circulation. ❄️

This helps keep the mattress cooler and more comfortable, making it better suited to hot sleepers or those who sweat easily. 

The combination of up to 2,462  micro springs and full-size pocket springs also aids support and gives you a more stable sleeping surface.

It also comes with a risk-free 365-day trial, giving you the chance to try the product in the comfort of your own home.

Reasons to buy

365-day trial

Lifetime guarantee

Free named-day delivery

Reasons to avoid

Not the best edge support

Why choose a super king mattress?

The 180 x 200 cm super king mattress is a luxurious choice.

It's great for couples, but you'll also be comfortable if your small child or dog hops into bed with you. Or cat, hamster, frog, bunny - all pets are welcome in the Sleep Hero world 🐶🐰🐸

If you're looking at the height of your next super-king-size mattress, consider the following:

  • Foam mattresses should have a height of at least 15 cm (5'9").
  • Spring mattresses should have a height of at least 20 cm (7'8").

Let's take a closer look at who would do well with a super king mattress.

Size: 180 x 200 cm
For whom? Singles, couples, couples with a child or pet
Materials used? High-quality materials such as latex, memory foam, cold foam, and springs

A luxurious choice for couples

The 180 x 200 cm super king mattress is a luxurious choice for couples.

This mattress is definitely wide enough to allow both partners to sleep comfortably - and even toss and turn if need be.

Your restless partner definitely won't keep you up at night - provided you have a good mattress with low motion transfer.

Low motion transfer means that the mattress will effectively absorb movements at the point of impact and not allow motion to travel through the mattress.

This is a win if you're sharing your bed with someone!

The super king mattress is also big enough to allow children or pets to hop into bed with you.

You'll all still have enough room to move and be comfortable.

Bring on the family cuddles and popcorn 🍿

An option for bigger builds

If you're of larger build or body size, then the super king mattress is also a good option.

You'll have more than enough space to move, and you can still share your bed with a partner - and sleep comfortably!

Ultimately, a good night's sleep is what it's all about 😄

Great for singles who like their space

No rulebook says singles can't splurge and invest in this luxurious mattress.

It's not necessary, of course, and singles will have more than enough space on the 150 x 200 cm king mattress, but if you have space and the budget available, then splurge away.

UK mattress sizes

Different types of mattress materials

There are hundreds of 180 x 200 cm super king mattresses available, all made from different materials, with different firmness levels, and available at different budgets.

Which super king size mattress, then, is the best one?

There's no definite answer to this - but there definitely is a mattress that's best for you.

We'd advise that you pay attention to the material used, degree of firmness, delivery conditions, and money-back guarantees.

Below you'll find an overview of the different types of mattress materials that can be used for 180 x 200 cm super king mattresses.

Super-king foam mattresses

There are a large variety of foam mattresses available, including pressure-relieving memory foam, cold foam, and geltex or gel foam.

Most high-quality foam mattresses are made of a combination of these and include numerous foam layers.

For example, a mattress may be constructed like this:

  • A top comfort layer of gel foam, which is less heat-retaining than memory foam and provides a comfortable feel.
  • A core of memory foam, which has body-contouring properties, relieves pressure points and provides a cushiony feel.
  • A zoned base layer of cold foam, which is firmer, offers support and provides stability.

A mattress of this construction will have great ortho properties and may be recommended as an orthopaedic choice.

Combining different foam layers will allow a mattress to merge the best properties of all the foams used.

Many of the bed-in-a-box mattresses that we recommend are foam-based mattresses.

If you're not a hot or restless sleeper, we would recommend opting for a super king memory foam mattress.

Pros and cons of foam mattresses

Advantages Disadvantages
  • Suitable for people of all ages.
  • Recommended for all sleeping positions.
  • An orthopaedic choice that can be good for people with back and neck pain.
  • Provides a warmer sleep, which is good for people who easily feel cold at night.
  • Suitable for adjustable slatted bases.
  • Not suitable for people who sweat a lot at night or those who prefer a cooler sleep.
  • Can be difficult to move on and not suitable for restless sleepers.
  • Foams are not natural materials and can release a chemical odour when first unpacked.

Super-king latex mattresses

While technically a latex mattress is also a foam mattress, its properties are a little different.

In contrast to memory foam, for example, latex foam offers a much cooler sleep and is easier to move around on.

This makes it a great choice for couples and restless sleepers.

Natural latex mattresses are also a great environmentally-friendly choice.

Natural and organic mattresses may be more expensive, but they don't contain any harmful chemicals and are often sustainably sourced.

Also, a mattress with natural fillings is a hypoallergenic choice that's great for people prone to allergies.

Latex mattresses are generally quite a bit more expensive than other foam mattresses.

Pros and cons of latex mattresses

Advantages Disadvantages
  • Great for people who like to sleep on their side.
  • Good for people who easily feel cold at night.
  • Suitable for adjustable bed bases.
  • Reduce back and neck pain.
  • Ideal for restless sleepers.
  • Can be an environmentally responsible choice if opting for natural latex.
  • Not suitable for people who sweat a lot at night.
  • The mattress must be regularly cleaned and rotated.
  • Latex mattresses are. more expensive - but also much more durable.

Innerspring mattresses

Innerspring mattresses, in general, are characterised by their firmness, stability, and great breathability.

Springs create natural ventilation channels, allowing for enhanced airflow.

This allows for an overall cooler sleep, which works well for heavy sweaters.

Spring mattresses are well-suited to people of larger size, back sleepers, and stomach sleepers.

However, there are many inferior coil mattresses available, which should be avoided.

Instead, we would recommend going for pocket sprung mattresses, where springs are individually wrapped.

This enhances point elasticity, minimises motion transfer, and allows for great comfort.

Pocket sprung mattresses are also much more durable.

You'll also commonly find springs in hybrid mattresses.

These combine high-quality foams and springs to offer the best of both - great comfort, stability, support, and breathability.

Pros and cons of spring mattresses

Advantages Disadvantages
  • Ideal for people who like firmer mattresses or heavier-weight people.
  • Great for people who sleep on their stomach or back.
  • Good for people who prefer a cooler sleep or those who sweat heavily at night.
  • Ideal for restless sleepers.
  • Great for bargain hunters.
  • Not suitable for those who feel cold easily, prefer a softer mattress, or pure side sleepers.
  • Can't be placed on adjustable slatted frames.
  • Older and inferior models tend to form dents.

Criteria to consider before purchasing a 180 x 200 cm super king mattress

Investing in a new mattress isn't always an easy task.

You want to make sure that you're investing in a high-quality product.

Here are some key criteria to look out for before purchasing your new 180 x 200 cm super king mattress.

Quality & density of the materials

As you've discovered, there are many different mattress materials available.

Some are cheaper. Some are more expensive.

One way to determine whether or not the mattress you're considering is of high quality is to look at the density of the foams used - or, in the case of springs, the number of springs in the mattress.

The higher the density, the more durable the mattress is and the longer its lifespan.

You can use the below table as a rough guide:

Density (in kg/m³) The expected lifespan of the mattress
Up to 25 Up to 2 years
30 Up to 3 years
35 5 - 6 years
40 6 - 8 years
50 - 60 10 years or longer

Stability, support, and firmness

Your mattress doesn't need to be firm to offer the right amount of stability and support.

A soft mattress, like the Emma Original, for example, still offers amazing support.

It all depends on the combination of materials.

Regardless of which material you go for, your mattress must be able to offer sufficient stability and support to keep your body in a healthy alignment while you sleep.

This is particularly important for side sleepers: Your hips and shoulders need to sink in a little more deeply while the rest of your body remains well-supported.

This will allow for optimal spinal alignment and is crucial to prevent lower back pain and stiffness.

Mattress firmness, in contrast, is largely a matter of personal preference.

That said, factors like age, body weight, and preferred sleeping position do play a role.

In general, heavier-weight people and back sleepers will require a firmer mattress and side sleepers, and lighter-weight people will require a softer or medium-firm mattress.

Firmness can be difficult to ascertain, so we've created a Sleep Hero firmness scale to help you.

Spinal alignment

Risk-free trial periods

No matter what pesky sales assistants may tell you, there is no way to know whether a mattress is right for you simply by lying on it for a few minutes.

It can take the body up to 30 days to get used to a new mattress.

This means that you need to give yourself the chance to really experience the mattress and see if it's right for you.

Most bed-in-a-box mattresses purchased online offer a risk-free trial period, which gives you the chance to try out the mattress in the comfort of your own home.

And if you're not happy?

Simply return it for a full refund 🥳

Eve Premium hybrid mattress delivery

Eve Premium Hybrid mattress

Sharing your super king bed with a partner

Of course, it's entirely likely that you and your partner want different types of mattresses.

What if you want a soft mattress and your partner wants a firm mattress?

What if you easily feel cold at night, but your partner is a very heavy sweater?

This can definitely create tension.

Sleep, after all, is vitally important and should not be compromised on.

But there are solutions.

Customisable mattresses

Customisable mattresses are becoming more and more popular.

Here, you can set individual preferences for each half of the mattress.

So, for example, your side of the mattress may be soft, but your partner's side may be firm. Or your side of the mattress may be made of memory foam, but your partner's side will feature latex foam.

This way, you'll both get exactly what you want.

Combining two single mattresses

You can also purchase two 90 x 190 cm single mattresses and place these next to each other.

This is a good option if you and your partner differ greatly in size and body shape and require two completely different firmness levels.

You can also easily bridge the gap between the two mattresses by investing in a bed bridge or a mattress topper.

That said, purchasing two smaller mattresses will end up costing you approximately 30% more than simply purchasing a standard super king size mattress.

Affordable super king mattresses

180 x 200 cm super king mattresses can be quite expensive.

They are very large, after all.

But, if you're investing in a mattress of this size, then it really is worth focusing on the actual investment part of it.

A high-quality mattress with high-density foams is likely to last you a very long time.

You're looking at up to 10 years or more for a good mattress.

In the long-term, it definitely is worth spending a little bit more time, effort, and money in making your choice.

But, this does not mean you need to invest in a superbly expensive brand like Tempur.

Many high-quality brands are available at good prices 💵

And you can get even better prices by applying discounts and coupon codes.

The biggest online mattress brands - like Eve, Emma, and Nectar - all offer regular promotions, where you can save up to 50%.

You'll find all the current promotions on our discounts page.

All you need to do is apply the coupon code upon checkout and, voila, instant savings!

Can I get super king mattress toppers?

Yes, there are mattress toppers available in the super king size.

Mattress toppers are a great option if your bed is a little too firm and you want to enhance comfort 😴

We've recommended a few of our favourites below.

Super king bed frames

Of course, if you're investing in a super king mattress, you'll also need to purchase a super-king-size bed frame.

There are no right or wrongs when it comes to bed frames, and your super king mattress will do well on a divan base, ottoman bed, or slatted bed frame.

You'll find our top recommendations below.


In general, 180 x 200 cm super king mattresses will be suitable for most sleepers.

There are many different models available but remember that each mattress has its own particularities, advantages, and disadvantages.

When choosing your 180 x 200 cm super king mattress, we recommend that you consider quality over price.

You’re planning on keeping your mattress for numerous years - up to a decade - and it is better to invest in a higher-quality model.

All of the super king mattresses we've recommended are good choices.

Frequently asked questions

  • What is a super king size mattress?

    A super king-size mattress is one of the most commonly available mattress sizes in the UK. 

    Super-king mattresses have dimensions of 180 x 200 cm (6' x 6'6").

  • Should I use a super king mattress protector?

    Yes, we always recommend using a mattress protector to extend the lifespan of your mattress.

    A waterproof mattress protector will protect your mattress against spills, stains, dirt, and bacteria.

  • What other mattress sizes are available in the UK?

    The most common mattress sizes in the UK include:

    • Single mattresses: 90 x 190 cm (3’ x 6’3”)
    • Small double mattresses: 120 x 190 cm (4' x 6'3")
    • Double mattresses: 135 x 190 cm (4’6” x 6’3”)
    • King mattresses: 150 x 200 cm (5’ x 6’6”)
    • Super-king mattresses: 180 x 200 cm (6’ x 6’6”)
    • Emperor mattresses: 200 x 200 cm (6’6” x 6’6”)

    Some brands will also have custom sizes available.



Editor & Certified Sleep Therapist

Nicky is an experienced writer and editor with numerous qualifications. As a certified sleep coach, her interests lie in understanding how sleep problems arise from hormonal and environmental issues, particularly as part of stress and anxiety management.

Was this article helpful?
Please fill out

Great! Do you have any questions or feedback? We'd love to hear from you.

What would have made it better?

You may also be interested in:

    Yes, please!
    No, thank you. Take me to the UK site.

    We have an affiliate relationship with some manufacturers, where we receive a commission on sales if you click over from our site. This does not affect the purchasing price. In contrast: By using our discount codes, you'll get the best deal possible.