Best King Size Mattress

Your Guide to Buying the Best King Size Mattress

Need help choosing the best king size mattress to guarantee a great night’s sleep? Then you’re in the right place! In this comprehensive, step-by-step mattress buying guide we’ll take you through the whole process…

First we’ll explain what to look for in a great mattress – and show you the benefits of selecting the right product for your individual needs. Then we’ve focused on 5 of the top mattresses amazon.co.uk has to offer! We’ve taken the time to write the best mattress reviews available online… These thorough but concise write-ups are designed to make a tricky choice easy!

BEST 2018

Hf4You Sprung Memory Foam Mattress 5Ft Kingsize

Hf4You Sprung Memory Foam Mattress 5Ft Kingsize
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Birlea Luxor Multi Pocket Sprung King Size Mattress

Birlea Luxor Multi Pocket Sprung King Size Mattress
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Silentnight Comfortable Foam Rolled King Size Mattress

Silentnight Comfortable Foam Rolled King Size Mattress
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Rest Assured Silentnight Brodsworth Memory 2000 Pocket Sprung King Size Mattress

Rest Assured Silentnight Brodsworth Memory 2000 Pocket Sprung King Size Mattress
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Relyon Royal Ortho Supreme Luxury Firmer Feel King Size Mattress

Relyon Royal Ortho Supreme Luxury Firmer Feel King Size Mattress
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PROS

Combines modern reflex and memory foam materials in addition to a traditional sprung construction. Great for a comfortable night’s sleep. Excellent value for money.

Rated medium/firm for support – a level favoured by many buyers. Comes vacuum-packed for convenient delivery and positioning. The quality, multi-layered construction comes without a heavy price-tag.

A mattress in a box! This product comes vacuum-packed and simply unrolls and expands to its natural size when in-situ. Very light, easy to handle, and affordable, this item has sold exceptionally well on amazon and secured over 500 reviews – the vast majority being 5 stars!

This is a well made mattress combining the advantages of pocket sprung construction with a memory foam top layer. The excellent ventilation ensures a cool night’s sleep and prevents moisture build-up and mould. Handles on the sides make this mattress easier to move.

An outstanding quality mattress produced by a British manufacturer with a long pedigree. Superior pocket sprung construction and the high density of springs make this a great choice for users seeking firm support. Guaranteed for an exceptional 8 years!

CONS

While some buyers like a memory foam top layer, others may prefer standard foam or natural materials. Some buyers have found the springs to be slightly noisy.

Heavier than some, and lacking side handles, this is not the easiest of mattresses to move. Some buyers may prefer a memory foam topped option.

This is the entry level model in its range and doesn’t include features like multi-zonal support. The product also doesn’t feature memory foam.

The flip-side of the depth and sturdy construction quality is that this mattress is, inevitably, heavy. The handles help with movement but some buyers may simply prefer a lighter choice.

We can’t hide the fact that this mattress isn’t cheap. There’s little doubt that this is a premium quality product, but the price may make it simply unobtainable to some buyers. The manufacturer has favoured natural fillings, while some buyers may prefer memory foam.

OUR VERDICT

Great value for money for buyers on a budget who prefer a sprung mattress to a solid foam construction. The reflex/memory foam topping means that this product combines the advantages of both styles.

A great, mid-range product that combines quality with affordability. Definitely a leading contender if you aren’t a fan of memory foam, and worth anyone’s consideration regardless.

It’s hard to be critical of a product as affordable and convenient as this. And, if you prefer a softer mattress, this could actually be a better choice than some of the pricier options in the same range.

Essentially, this is a good back-to-basics type solution for anyone needing a comfortable mattress that won’t break the bank!

This mattress is produced by a well-known manufacturer and features the very best of both traditional and modern materials. If you’re willing to pay a little more for great quality, this mattress will surely meet your needs

In terms of overall quality it’s hard to fault this mattress. If you are seeking a firmly supportive mattress to aid healthy sleep then this could be the one for you. For buyers willing to pay a premium price to ensure premium quality then this is a great option.

Type

Memory Soft Sprung Mattress

Pocket Sprung Mattress

Foam Mattress

Memory Foam Pocket Sprung Mattress with 2000 Springs

Pocket Sprung Mattress 2220 Springs

Firmness

Medium / Soft

Medium / Firm

Soft

Medium/Firm

Firm

Features

13.5g open coil bonnell spring unit for unbeatable support

Includes 20 mm of soft foam for extra comfort

Pressure Relieving and Hypoallergenic

Naturally self-cleaning mattress cover completely eliminates mould and dust mites without chemicals

Firm Perimeter Support – Adds strength to the edge of the mattress to allow you to use the whole surface of the mattress as a sleeping area

Packing

Full size mattress

Vacuum packed and rolled

Rolled, wrapped and delivered next day for your convienence

Full size mattress

Full size

Colour

Black

White

White

White

Blue

Certification

Meets all UK fire regulations

Meets all UK fire regulations

Meets all UK fire regulations

Meets all UK fire regulations

Meets all UK fire regulations

Weight

30 Kg

30 Kg

14 kg

98.5 Kg

89 Kg

Warranty

1 Year

1 Year

5 Years

5 Years

5 Years

Hf4You Sprung Memory Foam Mattress 5Ft Kingsize

Hf4You Sprung Memory Foam Mattress 5Ft Kingsize

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Birlea Luxor Multi Pocket Sprung King Size Mattress

Birlea Luxor Multi Pocket Sprung King Size Mattress

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Silentnight Comfortable Foam Rolled King Size Mattress

Silentnight Comfortable Foam Rolled King Size Mattress

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Rest Assured Silentnight Brodsworth Memory 2000 Pocket Sprung King Size Mattress

Rest Assured Silentnight Brodsworth Memory 2000 Pocket Sprung King Size Mattress

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Relyon Royal Ortho Supreme Luxury Firmer Feel King Size Mattress

Relyon Royal Ortho Supreme Luxury Firmer Feel King Size Mattress

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What to Look for When Buying

Believe it or not, your mattress is a big part of your life! You’ll likely use it almost every night for the next 8-10 years… In fact, most people spend around one-third of their lives in bed! And making the right decision when you buy can have big impact on your health.

In some ways you could say that there’s no such thing as the best mattress, only the best mattress for you! So, before we jump right in to the process of reviewing and comparing products, we’ll start by looking at the different features available and the points you should consider when buying…

King Size Mattress Size Guide!

Let’s start with a simple question – what size is right for you?

If you already have a bed, then selecting the size of mattress is easy… you simply choose what fits! (Feel free to skip forward to the ‘Support’ section below if you’re already sure you need a UK 150 x 200cm king size).

However, if you’re buying a new bed and mattress then you have a choice between a standard double, a king, and a super king. Here’s a size guide for each:

Standard Double: 135 x 190cm

King Size: 150 x 200cm

Super King: 180 x 200cm

So, which is best? Once again there’s no one right answer, only the right answer for you…

As a rough guide, most people prefer a bed/mattress at least 10cms longer than they are tall. This makes a king/super king the best option for anyone more than 180 cm (5’11’’).

You’ll also need to consider whether you’ll be using the bed alone, or with a partner. Think about your body size/s, and your sleeping habits – do you tend to lie stationary throughout the night, or do you often move in your sleep?

Lastly, don’t forget to factor-in the scale of your bedroom. How much space is needed for other furniture? How much room do you need to move around the sides of the bed? All of these factors can help you choose the correct size.

We believe that for most people, a king size offers the best blend between the need for extra space while you’re sleeping, with the need for a bed that fits properly within your room. The extra length is a handy plus point if you’re tall and the extra width makes for a larger sleeping area. But crucially it doesn’t come with the huge width of a super king – a size which simply doesn’t work in most people’s bedrooms.

So, if you’ve settled on a king, you’ll need to be sure you choose the right size king! You see, just to make things confusing, king size mattress dimensions actually vary slightly! The standard width for a UK made king size is 150cm, whilst the European standard is 160cm.

If you’re buying to fit a bed frame you already own, then you need to be sure to select the correct size! To keep things simple, the mattresses we’re looking at here are all manufactured in the UK to the standard UK dimensions (150 x 200cm).

Support

People come in all shapes and sizes! Selecting a product that offers the best support for your body is key to making the right choice…

A good mattress should comfortably support your weight without sagging. You should be able to move and turn on the mattress without noise or excessive resistance from the springs (if it uses springs). And, it should regain its natural shape quickly after you leave the bed.

If you’re of larger build, elderly, or suffering from a condition such as arthritis, joint problems, or back pain, then selecting a mattress that provides optimal support becomes doubly important.

Comfort

While it’s crucial to choose a mattress that offers great postural support, you also need to choose a product you find comfortable. Again, there’s no one-size-fits-all solution here – some people find a firmer mattress most comfortable, while others prefer something soft, spongy and luxurious.

To make things easier, mattresses are graded according to how firm they are. Categories include soft, medium and firm. Mattresses are sometimes also described as medium/firm (for example) if they fall between two categories.

You’ll likely have a clear idea of your own preference based on the mattresses you’ve owned before. Having said that, new products are constantly being developed with modern materials that offer a far better night’s sleep than a mattress from, say, 20 years ago ever could…

Materials and Construction

In writing this mattress guide, one of our key areas of focus was the quality of materials and construction. Once, a course outer fabric stuffed with horsehair (or even straw) was the best most people could hope for! Thankfully, things have moved on since those days! There are now a wide-range of different materials available. These include:

Foam

Light and comfortable, offering good, even support for the user.

Memory Foam

A responsive material that becomes pliable in response to body-heat. Memory foam adapts to your natural contours for fantastic orthopaedic support. Some sprung/foam mattress feature a memory foam topping for extra comfort.

Open Coil Springs

A traditional method of construction, each spring provides support for the user’s body.

Pocket Sprung

The individual springs are encased in a fabric pocket. Pocket sprung mattresses are famous for their excellent levels of support and are especially beneficial if you sleep on your side.

Zoned

The spring’s firmness and density is highest in the areas (zones) where the most support is needed.

Buy Online!

Instead of being tempted by the blaring ‘King Size Mattress Sale’ signs used by the big retailers, buy online to ensure you genuinely get a bargain! To help you choose, let’s take a look at five of the very best king size mattress reviews available in the UK from Amazon:

Hf4You Sprung Memory Foam Mattress 5Ft Kingsize

Hf4You Sprung Memory Foam Mattress 5Ft Kingsize

Hf4You Sprung Memory Foam Mattress 5Ft Kingsize

The Hf4You 5Ft kingsize mattress is an affordable, British made product. Featuring a double foam layer in addition to traditional sprung construction it offers great support.

Main Benefits

As a British made product complying with all regulations, you can rest easy knowing that this mattress is well-constructed and safe. It features three support systems – designed to offer comfortable support throughout the night. The National Bed Federation have also given this mattress their seal of approval.

While this isn’t marketed specifically for sufferers of back-problems, they may benefit from the orthopaedic support properties offered by the reflex and memory foam components. Meanwhile, allergy sufferers will likely be attracted by the mattress’ hypo-allergenic properties.

Construction and Materials

The 3 primary support systems consist of an open coil bonnell spring unit, a high-density reflex foam layer, and finally, a memory foam layer.

Reflex foam is a popular, cost-effective alternative to memory foam, offering many of the same benefits – typically at a lower price-point. Both varieties are high-density polyurethane foams – often included in mattresses for their excellent levels of orthopaedic support. By combining both materials, this mattress offers excellent comfort and postural support while remaining great value.

Features and Specs

  • Open coil bonnel springs
  • High-density memory foam layer
  • High-density reflex foam layer
  • High-quality quilted cover
  • Hypo-allergenic
  • 150 x 200cm

Buyer Reviews

The majority of buyers have left very positive reviews for this product. At the time of writing almost 80% rated this as a 5 star mattress. A couple of reviewers felt that the springs could be noisy, especially towards the edges. However, this issue don’t seem to have affected the vast majority of buyer’s experiences of this product.

The two key-points that consistently stand out across the reviews are the fantastic levels of comfort and brilliant value for money. A couple of buyers even say that sleeping on this mattress is so pleasurable that they find it hard to get up in the mornings! (I guess that’s what you’d call a ‘nice problem to have’!)

Conclusion

A good value for money product, this mattress offers a medium level of firmness and three complimentary support systems. If you’re considering a king size memory foam mattress, but also favour the extra support of springs, then this could be a great buy for you!

Birlea Luxor Multi Pocket Sprung King Size Mattress

Birlea Luxor Multi Pocket Sprung King Size Mattress

Birlea Luxor Multi Pocket Sprung King Size Mattress

The Luxor Mattress is produced by the British manufacturer Birlea. It features a multi-layered construction based around a core of pocket-springs.

Main Benefits

This mattress features superior pocket sprung construction – a system that ensures even weight distribution and support. Meanwhile, the foam upper layer and quilted cover ensure a comfortable sleeping experience.

The mattress is supplied vacuum-packed – a definite plus for anyone likely to experience problems moving a full king size mattress into position! Birlea, the manufacturer, offer a 3 year guarantee on this product for your peace-of-mind.

Materials and Construction

This mattress is constructed with multiple layers of different materials to ensure maximum performance. The core support is offered by a 20cm pocket sprung section – with 800 coils. This is topped by cotton felt, followed by a 1cm layer of soft foam, a fabric layer, a second foam layer, 2cms of polyester fibre, and finally a knitted fabric outer cover!

On the underside (beneath the pocket springs), is a cotton felt layer and a fabric base.

Features and Spec

  • Pocket sprung with soft foam
  • Medium/firm
  • Hypo-allergenic
  • 3 Year Guarantee
  • Dimensions: 150 x 200 x 20cm 30kgs

What the Buyers Say

Over 80% of the reviews for the Birlea Luxor king size mattress are 5 star! The product is frequently praised for coming vacuum-packed (and therefore being easy to move into position). Another benefit often mentioned is the high-level of value for money… Many buyers clearly feel that they have secured a premium-quality product for a less than premium price!

Only a small minority of buyers have have left negative comments. One buyer suggested the edges of the mattress are not well supported (but still rated the product 4 stars overall). Another noted that this is a heavy mattress – something that may be an issue for some users, but not for others.

Conclusion

If you are seeking a mattress with a premium feel, at a surprisingly affordable price, the Luxor by Birlea could be the right pick for you! The mattress is vacuum packed – making delivery and initial positioning simpler. On the flip-side however, the lack of handles on the sides could make moving this mattress awkward if it needed carrying to another room in the future.

The topping of foam, rather than memory foam, may appeal to those concerned about staying cool through the night. The medium/firm support rating makes this a good, middle-of-the-road option, likely to suit most sleepers.

Silentnight Comfortable Foam Rolled King Size Mattress

Silentnight Comfortable Foam Rolled King Size Mattress

Silentnight Comfortable Foam Rolled King Size Mattress

Constructed of Miratex Foam, this mattress by big-name manufacturer Silentnight is designed to offer a soft, comfortable sleeping experience. Hypo-allergenic and pressure relieving, Silentnight have clearly thought about the health of their product’s users when designing this.

Main Benefits

This king size foam mattress is rated as ‘medium/soft’ – this could suit buyers who favour a more luxurious sleeping experience than that offered by firmer, sprung products. Delivered vacuum packed and rolled, buyers are likely to find this an easy option when it comes to delivery. If you need a mattress for a room where access is awkward, this could be the right buy for you!

The foam construction also naturally makes this significantly lighter than some of the products we have reviewed here. Weighing in at only 14Kgs, this could be a definite plus should you need to move the mattress again after delivery.

This mattress also comes approved by Allergy UK – a real bonus for sufferers of illnesses such as dust-mite allergies.

Materials and Construction

The product is manufactured using a high-quality Miratex foam core. This is designed to absorb movement and prevent the dreaded ‘roll-together’! It is worth noting that this is the ‘entry-level’ model in the Silentnight ‘Mattress Now’ range. Unlike the other mattresses in this family, the product does not feature multi-zone support, nor a memory foam top layer.

As a significant plus, the fabric outer layer features zips and can be removed and washed if necessary.

Features and Specs

  • Miratex foam construction
  • Fabric outer with zip
  • Anti-allergy (officially approved)
  • Light and mobile
  • Dimensions: 150 x 200 x 14cm

What the Customers Say

This product has received generally positive reviews from users. A number of buyers have focused on the exceptional value for money provided by this mattress. As an entry level model, most buyers clearly feel the price more than reflects any (slight) compromises in quality.

Several negative reviews have focused on the fact that the mattress may have a strong smell initially. Buyers may wish to air the product thoroughly before use.

Conclusion

The removable outer cover and anti-allergy properties make this an appealing choice for those concerned about health and hygiene. The light weight of the product could be a big plus for some buyers and others may actually prefer the fact that this doesn’t feature a memory foam top layer.

Silentnight have clearly designed this product to be simple, comfortable and highly affordable. If you’re looking for a good mattress at a great price then this item definitely deserves your consideration.

Rest Assured Silentnight Brodsworth Memory 2000 Pocket Sprung King Size Mattress

Rest Assured Silentnight Brodsworth Memory 2000 Pocket Sprung King Size Mattress

Rest Assured Silentnight Brodsworth Memory 2000 Pocket Sprung King Size Mattress

The Rest Assured by Silentnight Brodsworth Memory 2000 Pocket Mattress is designed with the sleeper’s comfort at the front of mind. This well made British product combines the benefits of a traditional sprung mattress with the modern comfort of a memory foam top layer.

Main Benefits

Made by Silentnight, one of the UK’s leading mattress manufacturers, this product features a host of appealing benefits for the discerning buyer. Designed with allergy sufferers in mind, it is covered with a self-cleaning cover which effectively prevents mould and dust-mites. Built-in air vents also mean that air can circulate, preventing moisture build-up within the mattress (one of the leading causes of mould).

This mattress is suitable for use on either a divan or a traditional slatted bedstead and is graded as offering medium to firm support. Should you ever need to move this mattress to another room (or house), the strong handles on either side allow for this.

Quality Construction

This mattress is handmade with 2000 springs to provide uniform levels of support across the full sleeping surface. The top layer of memory foam provides a responsive surface which contours naturally to the user’s body. Special focus has been given to providing a finished product suitable for sufferers of back-pain and similar conditions.

Features and Specs

  • Sprung + memory foam topped
  • 2000 springs
  • Built-in ventilation
  • Medium/firm
  • Self-cleaning anti-allergy cover
  • Dimensions: 150 x 200 x 34 cm

Customer Reviews and Scores

The vast majority of customer reviews for this mattress are very positive (82% 5-star ratings at the time of writing). Some buyers have mentioned that the product is heavy and cumbersome, though this is, in fact, a result of its high-quality construction. The handles on the sides also mean that this is less of an issue than it could be.

Another feature that buyers praise is that it keeps its cool! Memory foam sometimes has a reputation for being hot to sleep against, but the excellent ventilation built into this mattress appears to solve that issue effectively. Overall, the product is consistently praised for being comfortable and well constructed.

Conclusion

Well made by a leading British manufacturer, this mattress provides a range of benefits. While it is bulky and heavy, most users won’t need to move their mattress too often. If you’re looking for a high-quality, well constructed mattress that brings together the benefits of traditional springs and modern memory foam materials, the Rest Assured could be for you!

Relyon Royal Ortho Supreme Luxury Firmer Feel King Size Mattress

Relyon Royal Ortho Supreme Luxury Firmer Feel King Size Mattress

Relyon Royal Ortho Supreme Luxury Firmer Feel King Size Mattress

The Royal Ortho Supreme – by Relyon is unquestionably a high-end product. Its pocket sprung construction offers fantastic weight distribution. As the name suggests, this mattress was designed with postural support firmly in mind!

Main Benefits

With a name like the ‘Royal Ortho Supreme’, it may seem that this mattress has a lot to live up to! But the manufacturer, Relyon, are a British maker of high-quality beds and mattresses with a long history and a proud reputation for excellence.

This mattress is designed to provide firm orthopaedic support. The 2200 pocket springs ensure that pressure points are avoided – instead the user’s body-weight is supported evenly right across the surface. Pocket springs also have the benefit of working independently. This reduces the chance of large areas of the mattress being compressed by the user’s weight (which can cause ‘roll-together’!)

Anyone suffering from back or joint problems could well benefit from choosing this product. In fact, anyone favouring a firmer, more supportive mattress will enjoy the great night’s sleep that the Royal Ortho Supreme offers.

High Build Quality

There’s no doubt that the manufacturer, Relyon, has taken pains to ensure a high quality product. The materials used and construction standards are superb…

Additional support has been added to the side areas (which can sometimes be less firm than the centre of a mattress). High-end natural materials have been selected (including silk and cashmere). Silk offers excellent absorbency and is often noted for its cooling effects. Cashmere is a form of goat’s hair traditionally prized for its exceptional softness.

Features and Specs

  • 2200 springs
  • Pocket sprung for enhanced support
  • Reinforced perimeter and side walls
  • Premium materials
  • Dimensions: 200 x 150 x 30 cm

User Ratings and Reviews

Unfortunately, this product features far fewer reviews than others we have looked at here. However, the 2 reviews present at the time of writing this article are both 5-Star rated and very positive. One review noted the mattress’ firmness. The user describes the product as being ‘very comfortable once you adjust to it’. This point just goes to show that even sleepers who have previously favoured a softer mattress can often adapt to, and even benefit from, a firmer sleeping surface.

Conclusion

Excellent for anyone experiencing back problems, this mattress provides firm support. However, this does mean that users favouring a softer mattress may not find this product to their liking. Some buyers may prefer the feel of memory foam.

These are, of course, purely areas of personal preference. Any users favouring sprung construction and the appeal of premium-quality, natural materials will be strongly attracted to this high-end product.