Your Sleep Matters!

King mattresses

150 x 200 cm - KING MATTRESSES

Nicky P.

Last updated: 11.05.2021 11.5 Min.

If your bed is feeling a little cramped, then we recommend you throw out your smaller mattress and choose a 150 x 200 cm (5’ x 6’6”) mattress.

The 150 x 200 cm mattress is the standard UK king size mattress, and it's the optimal choice for couples.

You'll find some variations on this size and are likely to also encounter the 160 x 200 cm queen mattress, which is popular in Europe.

Some UK manufacturers and retailers will also stock this size.

But to ensure that your mattress matches your bed frame and bedding, we suggest sticking to standard UK sizes.

If you're looking for the best 150 x 200 cm king mattresses in the UK, then this guide will help you.

150 x 200 cm King Mattresses
  • Overview
  • Who can sleep on a king mattress?
  • But wait - what's a queen mattress?
  • Different materials
  • Key criteria
  • Cheap mattresses
  • Do you and your partner want different mattresses?
  • Conclusion

Our top recommendations

Emma Original Mattress

Emma Original
Price from £ 269 (449 )

Emma Original

The Emma Original is an award-winning mattress that's universally suitable for all types of people and sleeping positions.

This bestselling mattress by the award-winning Emma brand offers 3 layers of premium foam and soft comfort, with sufficient support and stability.

All about the Emma Original

Emma Original

The Emma Original is a best-selling memory foam mattress.

It has been designed to be suitable for most people, sleeping positions, and sleeping preferences.

Made up of 3 different types of foam, it offers soft-to-medium support that's particularly suitable for side sleepers.

The Emma Original is delivered free of charge and comes with a risk-free 200-nigh trial period. 

Emma Original side handles


Our favourite
Nectar memory foam mattress

Price from £ 344 (469 )


The Nectar Mattress is a luxurious memory foam mattress that comes with 2 free pillows and a 365-day trial period.

This luxurious memory foam mattress is suitable for most people and sleeping positions and comes with a revolutionary 365-day trial period.

All about the Nectar

Nectar memory foam mattress

The Nectar memory foam mattress features 3 layers of high-quality foam for optimal spinal alignment, pressure relief, and comfort.

It has 7 contour zones to enhance its ergonomic design and keep your body in a healthy sleeping position.

The Nectar mattress also has a removable, breathable cover to provide for a cool & comfortable sleep.

It comes with free delivery & returns, a revolutionary 365-day trial period, and a 'forever warranty'.

Nectar memory foam mattress



Eve Mattress

Eve Original
Price from £ 429

Eve Original

The Eve Original is the original best-selling memory foam mattress by Eve Sleep.

This high-quality medium-firm mattress by Eve Sleep is suitable for most body types and sleeping position. 

All about the Eve Original

Eve Original

The Eve Original mattress consists of three different high-quality foam layers and a machine-washable cover.

The mattress has a high level of elasticity and provides great support, promoting optimal spinal alignment and reducing pressure points. 

It is a medium-firm mattress that has been specifically designed to suit most body profiles and sleeping positions.

The Eve Original comes with free delivery & returns and a risk-free trial period.

Eve Original Mattress

20% OFF £500 WITH 'MAY20'

Eve Premium Hybrid Mattress

Eve Premium Hybrid
Price from £ 782 (978 )

Eve Premium Hybrid

The Eve Premium Hybrid is a luxurious hybrid mattress with 5 layers of new generation foam and over 1500 pocket springs.

This high-end mattress combines foam with pocket springs and offers superior comfort with optimal support and spinal alignment. 

All about the Eve Premium Hybrid

Eve Premium Hybrid

The Eve Premium Hybrid is a luxurious medium-firm mattress that offers superior comfort and excellent support. 

Its unique composition of foams and springs offers a high degree of comfort in all sleeping position.

The mattress adapts well to the body of the sleeper and offers optimal spinal alignment.

This is a great mattress for people suffering from back pain.

The Eve Premium Hybrid comes with free delivery & returns and a risk-free trial period.

Eve Premium Hybrid Mattress


Who can sleep on a king mattress?

The 150 x 200 cm mattress is the optimal size.

It's not too wide and will fit into most rooms but it's still wide enough to offer two people more than enough space and a comfortable night's sleep.

A mattress of this size can also easily accommodate a baby, child, or pet who may hop into bed from time to time.

Singles can also enjoy the 150 x 200 cm mattress and it's perfect for restless sleepers.

Size 150 x 200 cm
For whom? Singles, couples, guests
Materials? High-quality materials such as latex, memory foam, cold foam, and springs

150 x 200 cm mattress - the optimal size for couples

The 150 x 200 cm mattress is the optimal size for couples.

It's a little bigger than the 135 x 190 cm double mattress and will offer both partners more room to sleep and toss and turn.

This is particularly advantageous if one or both partners are of a larger build or restless sleepers.

The 150 x 200 cm mattress also isn't too wide to not fit into bedrooms. While, of course, some rooms are smaller than others, it should fit into most bedrooms, even in the UK.

150 x 200 cm mattress - for the sleep-loving single

If you love your sleep, then there's no reason not to indulge in a 150 x 200 cm mattress even if you sleep alone.

This mattress offers ample space for you to sleep, read, watch movies, lie crossways, practise yoga - anything, really.

It's also a great choice for very restless sleepers or people of larger build who enjoy their space.

150 x 200 cm for babies, children, and pets who hop into your bed

Do you have a baby, child, or pet that likes to hop into bed with you and your partner?

Then the 150 x 200 cm king mattress is perfect. There will be enough space for everyone to sleep comfortably.

There really is no going wrong with the 150 x 200 cm king mattress. If you have the budget and your room is large enough, then this is the perfect choice for singles and for couples.

UK Mattress Sizes

But wait - what's a queen mattress?

If you've lived or travelled abroad, then it's likely that you've come across queen-size mattresses.

This mattress size is not commonly available in the UK.

The queen-sized mattress is a 160 x 200 cm mattress, most similar to the UK king size mattress.

Take a look at the table below, which should clear up any misunderstandings.

Descriptor UK size European sizes
Queen / 160 x 200 cm
King 150 x 200 cm 180 x 200 cm
Super King 180 x 200 cm /

Different types of materials for 150 x 200 cm mattresses

The 150 x 200 king mattresses are available in many different types of materials.

Not each material will be right for you, the shape of your body, or your preferred sleeping position.

Memory foam

Memory foam mattresses adapt well to the contours of the body and relieve pressure adequately.

They also have very low motion transfer, making them an excellent choice for couples.

Motion transfer refers to movement in the mattress.

Low motion transfer means that movements will be absorbed and not travel across the mattress.

This means that you won't be disturbed by your partner's movements at night.

On the downside, memory foam retains more heat than other types of foam, increasing the overall sleeping climate. This is not ideal for people who easily feel hot or heavy sweaters.

Many memory foam mattresses have a cooler top layer and breathable cover to counteract this.

Emma Original mattress

Emma Original mattress

Latex foam

Latex foam mattresses are very comfortable to sleep on.

They offer a high point elasticity, are great for restless sleepers, and are also much cooler than memory foam mattresses.

Latex also has natural anti-allergenic properties, making it suitable for people prone to allergies.

Natural latex mattresses are also a great choice for people who are looking to invest in a high-quality, durable mattress that's environmentally friendly.

High-quality latex mattresses are considerably more expensive than other mattress models.

latex foam

latex foam layer

Cold foam

Cold foam mattresses are characterised by their high point elasticity, low motion transfer, and stability.

High-quality mattresses only use cold foam as their base layer, which adds stability and firmness to the mattress as a whole.

Pay special attention to the density of the cold foam used and make sure you choose a mattress with a density of 40 kg/m³ and up.

cold foam

cold foam mattress

Gel foam

Gel foam mattresses are characterised by their adaptability, high point elasticity, and cooler sleeping climate.

Most high-quality mattresses only use gel foam as the upper comfort layer of a mattress and combine it with firmer and more stable base foams.

This is because gel foam is quite soft and more expensive than other foams.

gel foam mattress

gel foam firmness

Innerspring mattresses

Innerspring mattresses come in a wide variety of different styles but they're all characterised by their spring core, stability, and greater breathability.

Spring mattresses are generally firmer than other types of mattresses, making them a good choice for back sleepers, stomach sleepers, and people of a heavier build.

They're also better ventilated and allow for a cooler sleeping climate, making them a good choice for people who easily feel hot at night.

Of the innerspring mattresses, we'd recommend the pocket spring mattresses. Here, springs are wrapped in individual pockets, which makes the mattress more comfortable.

Nowadays, many spring mattresses are available in a hybrid form, combining spring and memory foam to accentuate the advantages of both materials.

Eve Premium Hybrid pocket springs

Eve Lighter Hybrid springs

Criteria to consider before purchasing a 150 x 200 cm king mattress

If you’re sharing your bed with a partner, it’s essential that each partner has the necessary space to sleep comfortably and move around without disturbing one another.

That said, you also need a mattress that sufficiently supports both partners.

Pay attention to the following key criteria before purchasing your new 150 x 200 cm king mattress.

Support and stability

When choosing your mattress, pay special attention to the support the mattress gives.

You want a mattress that supports your spine adequately and adapts to the contours of your body but still allows you to move around freely.

This is largely influenced by the material you choose.

Memory foam, for example, adapts very well to the contours of your body and ensures that your spine is kept in a healthy alignment. But, it retains more heat than other materials. This may or may not be a problem for you.

The type of material used will affect support and comfort. Each material feels slightly different.

One cannot say that one is better than any other - it is up to each person to find the material that suits them best.

Degree of firmness

Choosing a soft, medium, or firm mattress will depend largely on your personal preference.

There is no right or wrong choice.

In general, though, the larger or heavier you are, the firmer you need your mattress to be. This is to allow for enough support to keep your spine in a healthy alignment.

But as long as your body remains optimally aligned, you can choose whichever degree of firmness you wish.

Other factors that may influence your decision include your age, favourite sleeping position, etc.

We've created a Sleep Hero firmness scale to help guide you through the confusing world of mattress firmness.


Can I buy a cheap 150 x 200 cm mattress?

If you're buying a 150 x 200 cm king mattress, then you'll undoubtedly want your mattress to last a long time.

Never compromise on quality.

High-quality mattresses can last for ten years or longer, so making a bit of an investment is worth it.

After all, the quality of your sleep affects the quality of your life.

Pay special attention to the materials, stability, and firmness of your mattress.

Also ensure that foams used are of a high density. The higher the density, the longer the lifespan of the mattress.

This table on density can be used 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

But buying a high-quality mattress doesn't mean that you need to sell your arms and legs. There are many high-quality mattresses available at great prices.

Brands like Emma, Eve, or Nectar all offer superb products at competitive prices.

They also all frequently run promotions, so you can save up to 50% on your purchase!

Check out our discounts page for all the current promotions available.


Do you and your partner want different mattresses?

The hardest part of choosing a 150 x 200 cm king mattress to share is that you and your partner may want different things.

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

What if you like firm mattresses but your partner likes soft mattresses?

Not finding the right mattress to suit both partners can definitely be a problem.

But, there are some solutions:

Customisable mattresses

These are not widely available but they are slowly becoming more and more common.

For customisable mattresses, 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.

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

Check out the SleepHubs Tweak Mattress for a fully customisable mattress that will suit your exact preferences.

Combining 2 single mattresses

Of course, you can also combine two 90 x 190 cm single mattresses.

If you and your partner have widely different preferences, then you can invest in two single mattresses instead and place them next to each other on the same bed frame.

You can get rid of the gap between the two mattresses by using a bed bridge or a mattress topper.


When choosing your new 150 x 200 cm king mattress, pay special attention to the quality of the mattress.

If you're choosing a mattress of this size, then you'll undoubtedly want to keep it for a long period of time.

High-quality mattresses can last up to ten years or even longer.

Over the long term, making a good investment is worth it.

There really is no going wrong with the 150 x 200 cm king mattress.

If you have the budget and your room is large enough, then this is the perfect choice for singles and for couples.

Nicky P.

My mum calls me "bear" because I like to sleep so much. I never knew that, one day, that would be a very useful skill. Can you tell that I've found my calling? 

Try these

We can highly recommend these best-selling mattresses.

Emma Original
Emma Original Emma Original Mattress
Emma Price from £ 269 (£ 449 )

Get 40% off the Emma Original, an award-winning soft & comfortable mattress that's suitable for all.

Simba Hybrid
Simba Hybrid Simba Hybrid Mattress
Simba Price from £ 456 (£ 609 )

Get 25% off the Simba Hybrid mattress, a high-quality pocket sprung memory foam mattress with Simbatex synthetic latex layer.

Current mattress discounts:
You may also be interested in:

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.


Looking for the best deal? We track all discounts, vouchers, and coupons so that you will always get the best price through our site. No matter which mattress or product you end up choosing.



We're a team of sleep enthusiasts and experts. We test hundreds of sleep products - mattresses, pillows, toppers, bed frames, and more! - to provide you with the best reviews. Our mission is to help you make the right choice for your sleep. Read more about us