Mattress Online Review

flag Free next day delivery & old mattress removal
  • 60 day trial & hundreds of options

  • Pay later with Klarna

  • Prices suitable for every range

  • UK made mattresses

Pros & Cons

  • Free next-day delivery option is available, and the customer can choose to pick a later date of delivery according to their own preference.
  • Award-winning mattresses
  • Large variety of mattresses to choose from
  • Mattresses for every price range available.
  • Sleep trial is not available for all mattresses
  • You can only exchange your mattress after the sleep trial; not return it for a refund.

Sizes & Pricing

Mattress Online boasts a large array of mattresses from different brands, all of which are on display on their website. These mattresses come in different sizes and varying price ranges.  Let’s take a look at sizes for the brand’s three top-selling mattresses mentioned on their website.

Millbrook Wool Luxury 4000 Pocket Mattress

  • Single (90cm x 190cm) – £838.09
  • Small Double (120cm x 190cm) – £1,105.36
  • Double (135cm x 190cm) – £1,105.36
  • King Size (150cm x 200cm) – £1,372.64
  • European King size (160cm x 200cm) – £1,659
  • Super King Size (180cm x 200cm) – £1,678
  • Super King Zip and Link (180cm x 200cm) – £2,212.64

Silentnight Sofia 1200 Mirapocket Mattress

  • Single (90cm x 190cm) – £483
  • Double (135cm x 190cm) – £638
  • King Size (150cm x 200cm) – £744
  • Super King Size (180cm x 200cm) – £893

Mattress Online has been in the mattress retailing business since 2003, and its products have been tried and tested with reliable warranty periods. The brand has garnered a number of excellent reviews, and received many awards, playing testament to the quality of its products and services. Each mattress comes with its own specific warranty, mentioned on the website along with its description. The minimum warranty period for the listed mattresses is 12 months.

In addition to warranties, Mattress Online also offers different trial periods, including a 60-day trial on its Sleep Trial mattress range. This way, customers can test out a mattress and check that they’re completely satisfied with the product before committing to it. In general, guarantees for mattresses vary from 12 months to 20 years, depending on which mattress you choose. The warranties for their three top-rated mattresses are:

  • Millbrook Wool Luxury 4000 Pocket Mattress: 10 years
  • Silentnight Sofia 1200 Mirapocket Mattress: 5 years
  • Sealy Posturepedic Pearl Ortho Mattress: 5 years


Mattress Online is a UK-based retailer of mattresses, beds, and related products that stepped into the game in 2003. Since then, the company has won a multitude of awards for their excellent service. Mattress Online offers a great deal of variety on mattresses and their price range, so you can find a bed that’s just right for you!


  • "Price"
    9.1 /10
  • "Comfort"
    9.3 /10
  • "Body Support"
    9.3 /10
  • "Customer Support"
    9.5 /10


Millbrook Wool Luxury 4000 Pocket Mattress

Millbrook Wool Luxury 4000 Pocket Mattress is a pocket sprung mattress with 3 layers to provide optimal levels of comfort and support.

  • Top layer: This layer is made from Hampshire fleece wool and offers luxurious comfort. The locally sourced wool provides a natural, breathable top to the mattress which aids in temperature regulation.
  • Middle layer: This layer supports double layers of 4,000 individually nested pocket springs, one of the highest pocket spring counts available in the market. These springs individually support the weight of the sleeper, providing firm support to all body parts. The pocket spring design allows minimal transfer of disturbance through the night, so your partner’s movements will not wake you up.
  • Bottom layer:The bottom layer is the same as the top one, a layer of Hampshire fleece wool. This design makes it comfortable from the top and the bottom, so you can flip it easily, without compromising on comfort.

The naturally sourced wool from Hampshire lambs is thicker and fuller than the standard wool. It provides the ideal comfort in all seasons; it keeps you warm in the summer. The breathable wool regulates airflow through the mattress layers and provides a comfortable sleeping environment.

Silentnight Sofia 1200 Mirapocket Mattress

Silentnight Sofia 1200 Mirapocket Mattress is an award-winning mattress with layers that work together to provide you with ultimate comfort levels through the night.

  • Top layer: The top layer provides pressure relief to the sleeper, thanks to the Eco comfort fiber layer.
  • Middle layer: The middle layer holds 1200 Mirapocket springs nested between the two comfort fiber layers. The spring layer with individual pocket springs provides support to the sleeper from head to toe.
  • Bottom layer: The bottom layer is another comfort fiber layer which is identical to the top layer. This means that you can flip your mattress regularly and keep it in excellent condition with the same comfortable experience on both sides.

Sealy Posturepedic Pearl Ortho Mattress

Sealy Posturepedic Pearl Ortho mattress provides comfort and excellent orthopedic support to its users.

  • Top layer: The top layer is a soft and comfortable layer of upholstery padding.
  • Middle layer: PostureTech Zero Deflection springs make up the middle layer of the Sealy mattress. These springs have a smaller diameter than their counterpart in the traditional ‘open coil’ mattresses. Therefore, the Sealy Posturepedic Pearl Ortho mattress has a higher than average spring count and this ultimately adds to the responsiveness and comfort of the mattress.
  • Bottom layer: The bottom layer also has a comfortable and luxurious upholstery padding, the same as that on the top. This allows you to flip the mattress when needed, making it a double-sided mattress with the same comfort on both sides.

The Sealy Posturepedic Pearl Ortho Mattress offers users a cool and breezy sleeping experience. The Tencel cover and Sealy Adaptive technology work together to create a well-ventilated environment with moisture management and heat dispersion.


Mattress Cover

The Millbrook Wool Luxury 4000 Pocket Mattress is encased in a soft and breathable cotton-viscose cover which removes excess moisture and keeps the mattress ventilated. The M-pure infusion in the cover makes it naturally fire resistant, without the use of any harsh chemicals. You can move the mattress easily, thanks to the built-in turning handles. As the cover is not removable, users can clean it with mild detergent.

The Silentnight Sofia 1200 Mirapocket Mattress has a soft-touch hand-knitted fabric cover that protects the mattress. The mattress is hypoallergenic and is not chemically treated, providing a comforting and natural environment to sleep in. The cover also has built-in turn-in handles, so you can easily flip over the mattress when needed. The mattress cover is non-removable and requires spot cleaning with mild detergent.

The Sealy Posturepedic Pearl Ortho mattress has a Tencel cover that provides the mattress with superior protection. The innovative fiber technology of Tencel facilitates moisture management and coolness during a sleep. It is non-removable and requires spot cleaning with mild detergent. The mattress includes mattress turning handles for easy turning.

Firmness, Feel & Support

Millbrook Wool Luxury 4000 Pocket Mattress

The mattress provides a comfortable environment for sleep; the wool layer provides a soft cushion and the pocket-spring layer provides lumbar support and pressure relief. The Millbrook Wool Luxury 4000 Pocket Mattress is well-suited to the average sleeper. It provides a medium to firm feel on the firmness scale.

The pocket spring design yields decent sinkage to the mattress; it sinks under the weight of the sleeper but springs back up afterward and maintains its shape. The mattress design aids lumbar support and helps in the spine alignment during sleep.

The individually nested pocket springs help in the suppression of motion transfer; so you can easily sleep alongside a partner, without being disturbed through the night due to their movement.

Silentnight Sofia 1200 Mirapocket Mattress

The Silentnight Sofia 1200 Mirapocket Mattress stands at medium-firm on the firmness scale.  It offers balanced levels of comfort to the sleeper and is suitable for the average user with no specific needs. The individually nested springs adjust to the weight of the body and provide point-pressure support to each user. The springs add sinkage to the mattress and recover to their original position after each use. The pocket spring layer provides correct lumbar support and comfort to each user.

Overall, the Silentnight Sofia 1200 Mirapocket Mattress is a comfortable and supportive mattress. It is especially preferred by couples. You won’t be disturbed by your partner’s movements through the night, thanks to the minimal motion transfer facilitated by the pocket spring layer.

Sealy Posturepedic Pearl Ortho Mattress

Sealy Posturepedic Pearl Ortho mattress is a source of comfort and orthopedic support to its users. It is a firm mattress and is suitable for people who need a firm mattress to sleep. It is also excellent for people of large stature, as it offers firm support overall.
The PostureTech Zero Deflection springs ensure even weight distribution throughout the mattress. They provide a firm and stable support to the sleeper. They also limit motion transfer during sleep and make it an excellent choice for people with partners who might be disturbed by their partner’s movements during sleep.

Purchase & Delivery Process

You can choose the mattress online, 24/7, through the Mattress Online website. If you place the order before 4 pm, you can expect next-day free delivery. You can also choose to have the mattress delivered later.

The two-man delivery option has a small fee. In addition, Mattress Online offers a free old mattress removal service at your doorstep, so you don’t have to worry about what to do with the old mattress and can enjoy your brand new mattress.

Mattresses purchased on Mattress Online come with a 60-nights trial period where you can test out the mattress yourself. This way you can ensure that you are completely satisfied with the mattress and if you are not, you can have it exchanged for another bed. There is also an option for the return and refund of unused mattresses for Mattress Online’s entire range.

Customer support

Mattress Online has a very helpful support staff for guiding customers and responding to their concerns. It also has experts to advise consumers about the products and related issues. They offer support via phone, live chat, and email, 7 days a week. They also have an FAQ section and blog.

  • Phone Support
    Mattress Online offers phone support to its customers during their opening hours. (9.30am - 5.30pm Monday to Saturday & 10am - 4pm on Sundays)
  • Live Online Chat
    It offers live chat support during the mentioned opening hours. The live chat option is available through the brand’s website.
  • Email
    Mattress Online can be reached through email as well. In addition to all these methods, you can also contact them simply through the old-fashioned way, writing an email!
  • FAQ
    Mattress Online has a detailed FAQ section on their website with sections about Order and payment; Cancellations, returns, and refunds; Guarantees, warranties, and sleep trials; and choosing the right mattress.
  • Community Forum
    Mattress Online has online communities on Social Media platforms like Facebook, Twitter, and Pinterest etc.
  • Blog
    It also hosts an active blog where articles related to sleep and the sleeping environment are posted regularly. Additionally, the website has an Advice section where experts help you understand how to choose the right mattress, bed, and accessories.

Final Word

The award-winning service and products of Mattress Online are what set it apart from other mattress retailers in the market. The impressive range of mattresses available on the website combined with the vast price range ensures that there is a mattress for everyone. Moreover, the expert advice and support provided on the website help you choose just the right mattress for yourself.

The free delivery and free mattress removal option means that you only have to order the mattress and not worry about anything else. With Mattress Online, a great sleep is only a day away. If the top-three picks we discussed don’t seem like your cup of tea, then check their website out for many more options!

This website is an informative comparison site that aims to offer its users find helpful information regarding the products and offers that will be suitable for their needs. We are able to maintain a free, high-quality service by receiving advertising fees from the brands and service providers we review on this website. These advertising fees, combined with our criteria and methodology, such as the conversion rates, our team of reviewer's finding and subjective experience and product popularity, impact the placement and position of the brands within the comparison table. In the event rating or scoring are assigned by us, they are based on the position in the comparison table, or according to other formula in the event specifically detailed by us. See our How we Rate page and Terms of Use for information. The reviews, rating and scoring are provided “as-is” without guaranties or warranties regarding the information contained in our website, which shall not be considered as endorsement. We make the best efforts to keep the information up-to-date, however, an offer’s terms might change at any time. We do not compare or include all service providers, brands and offers available in the market.
Asya Fatima Abdulwajid>
Asya Fatima Abdulwajid

Asya is an experienced and professional consumer product reviewer and writer. She excels at thoroughly researching her subject so that she can convey information in a way that is helpful and easy to understand.

This review is based on the writer's personal opinion.

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Questions & Answers


What is the cost for delivery?

Mattress Online offers free delivery service for standard delivery. There is a small fee for the two-man delivery.

Do your products come with a Guarantee?

Yes, all the products on Mattress Online come with a guarantee. These guarantees and warrantees vary depending on the product. You can check the individual products to find out more details about it. All the products listed on the website have a minimum warranty of 12 months.

How soon can you deliver?

Mattress Online offers a next-day delivery option for the listed mattresses on the website if you place the order before 4pm. The customers can choose to have the products delivered later as well.
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