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King mattresses

Best King Mattresses UK (2021)

Nicky

Last updated: 07.09.2021 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

    Excellent quality
    Simba Hybrid Mattress

    Simba Hybrid
    Price from £ 486 (649 )

    Simba Hybrid

    The Simba Hybrid mattress is a high-quality pocket sprung mattress with multiple layers of foam. ~ One of the most comfortable mattresses we've ever tested.

    This award-winning and five-star-rated original mattress by Simba Sleep is a unique hybrid mattress that combines polyfoam, high-definition foam, and pocket springs.

    All about the Simba Hybrid

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

    It features two comfort layers of Simba-Pure open-cell polyfoam and a core of up to 2500 Aerocoil mini pocket springs, in addition to high-definition foam.

    Simba Hybrid mattress
    The Simba is one of our favourite hybrid mattresses

    This is a medium-firm mattress that's a great choice for a wide range of sleepers, regardless of body size or preferred sleeping position.

    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 a hypoallergenic cover designed to maximise airflow.

    The cover is not machine-washable. 🧼

    We'd recommend making use of a mattress protector to safeguard your mattress.

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

    25% OFF SIMBA

      Simba Hybrid
    Composition: Pocket sprung foam mattress
    Firmness level: Medium-firm
    Height: 25 cm (10 inches)
    Trial period: 200 days
    Guarantee: 10 years
    What makes this mattress special:  A unique combination of mini pocket springs & foams
    Our favourite
    Nectar memory foam mattress

    Nectar
    Price from £ 466 (769 )

    Nectar

    The Nectar is a luxurious memory foam mattress suitable for most people and sleeping positions. ~ The trial period is unbeatable!

    This bestselling mattress comes with a revolutionary 365-day trial period and a lifetime warranty.

    All about the Nectar

    The Nectar memory foam mattress is one of our favourite mattresses.

    It features 3 layers of high-quality, high-density memory foam for optimal spinal alignment, pressure relief, and comfort.

    The base layer also has 7 contour zones to enhance its ergonomic design and keep your body in a healthy sleeping position. 📏

    This prevents a build-up of tension and allows for orthopaedic support.

    Nectar mattress
    The Nectar is a medium-firm mattress

    The Nectar mattress comes with a breathable cover that enhances airflow to allow for a cool and comfortable sleep. 💨

    Unfortunately, the cover is not machine-washable.

    We'd suggest using a mattress protector to safeguard your mattress against stains, spills, and bacteria.

    The Nectar mattress comes with free delivery & returns, a revolutionary 365-day trial period, and a "forever warranty". 

    NECTAR + GIFTS 

    Nectar mattress  
    Composition: Memory foam
    Firmness level: Medium-firm
    Height: 25 cm (10 inches)
    Trial period: 365 days
    Guarantee: Lifetime warranty
    What makes this mattress special? Exceptional support & 365-day trial
    Premium choice
    DreamCloud Luxury Hybrid Mattress

    DreamCloud Luxury Hybrid
    Price from £ 549 (849 )

    DreamCloud Luxury Hybrid

    The DreamCloud Luxury Hybrid mattress is a 5-layered premium mattress that combines memory foam with pocket springs. ~ Pure luxury in a box.

    This is a high-quality mattress designed for enhanced breathability, comfort, and support. 

    All about the DreamCloud Luxury Hybrid

    The DreamCloud Luxury Hybrid is a premium mattress from the same company that's brought you the Nectar memory foam mattress.

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

    DreamCloud luxury hybrid

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

    The mattress also 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 a great choice for couples.

    The DreamCloud Luxury Hybrid mattress is 28 cm (11 inches) thick and stands out as a key feature in any bedroom. 🏆

    The mattress comes with free delivery & returns, a remarkable 365-night risk-free trial period, and a lifetime guarantee.

    £300 OFF DREAMCLOUD

      DreamCloud Luxury Hybrid
    Composition: Memory foam, pocket springs
    Firmness level:  Medium-firm
    Height: 28 cm (11 inches)
    Trial period: 365 days
    Guarantee: Lifetime warranty
    What makes this mattress special? Revolutionary 365-day trial period and a lifetime guarantee
    Eve Premium Hybrid Mattress

    Eve Premium Hybrid
    Price from £ 782 (978 )

    Eve Premium Hybrid

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

    This high-end mattress promises to support people of all weights and body sizes - and it's perfect for couples!

    All about the Eve Premium Hybrid

    The Eve Premium Hybrid is the most luxurious hybrid mattress by Eve Sleep.

    Eve Premium Hybrid

    It combines multiple layers of foams and springs, including:

    • Graphite-infused cooling foam
    • Evecomfort foam that's 30x more breathable than traditional memory foam
    • Open-cell support foam
    • Up to 1666 full-size pocket springs
    • High-resilience base foam

    This unique combination guarantees a high degree of comfort in all sleeping positions.

    The mattress adapts to the body of the sleeper, allowing for optimal spinal alignment. 📏

    The Eve Premium Hybrid is particularly great for people suffering from back pain.

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

    The Eve Premium Hybrid mattress comes with free delivery & returns, a 200-night risk-free trial period, and a 10-year guarantee.

    20% OFF PREMIUM HYBRID

      Eve Premium Hybrid
    Composition: Graphite-infused foam, memory foam, full-size pocket springs
    Firmness level: Medium-firm
    Height: 28 cm (11 inches)
    Trial period: 200 days
    Guarantee: 10 years
    What makes this mattress special? 5 layers of premium comfort & support

    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.

    READ OUR FULL GUIDE ON DEGREE OF 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.

    VIEW ALL CURRENT PROMOTIONS

    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.

    Take a look at the Tweak mattress as an example of customisable mattresses.

    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.

    Conclusion

    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

    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.

    Simba Hybrid
    Simba Hybrid Mattress
    Simba Price from £ 486 (£ 649 )

    Get 25% off the Simba Hybrid, a bestselling hybrid pocket sprung foam mattress.

    Current discounts:
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