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      Firm Mattresses

      Specially designed to evenly distribute your weight as you sleep, firm mattresses are perfectly suited to help alleviate any back, neck, shoulder, and hip pain you might be experiencing. Although the softness of a medium mattress can certainly be comforting, sometimes our bodies need that little bit of extra support throughout the night for an uninterrupted rest. And if this sounds familiar, then a firm mattress might be just what you're looking for. Take a look at our filterable range below or head to the bottom for more details about firm mattresses.

      75 results

      Read what our verified customers are saying

      • Trustpilot 5 stars

        Fabulous service

        Fabulous service. Ordering easy, great price, full updates, super quick delivery as promised. Would highly recommend - 10/10.

        Kh
        26th March 2026 Verified
      • Trustpilot 5 stars

        Very impressive

        They were later than originally said but I was kept informed of this so, all good.Very pleasant delivery guys, took the box through to the bedroom and laid it down for me. V helpful and pleasant

        Mammajones
        26th March 2026 Verified
      • Trustpilot 5 stars

        Love my mattress

        My mattress was delivered quick the delivery men handled the mattress with care will recommend this company very highly

        Angela
        26th March 2026 Verified
      • Trustpilot 5 stars

        Quick customer service

        Update.Customer service got back to me organised a credit to my account to replace and delivered a new one the next day. I went for the soul sleep bliss 800 memory foam pillow top and now sleeping like a baby. Which recommended aswel with a 10 yr guarantee- research is key ordered the mattress checked reviews beforehand and all looked ok. Im assuming that most of these are done within the first week of buying the mattress because once its delivered and put on the bed. I brought a spring memory foam ortho mattress within one week I had back pain (never had this before and I always buy this type of mattress) within 21 days I started feeling all the springs underneath the very thin memory foam layer I followed all instructions re rotating top to bottom regularly. I am shocked that only after this small amount of time the springs and easily felt even when placing your hand onto the top layer. I emailed the help center and they got back within 48hrs requesting lots and lots of photos to send on to the manufacturer and said if they dont resolve it theres a 100 day mattress guarantee (but can only be enforced after 50 days to be able to exchange and there is a 100 delivery fee) so I have to wait another 27 days with a mattress that is causing extreme hip and back pain form the springs digging into me which is not acceptable. Please collect the mattress and refund my money I do not want another mattress from this site as I no longer have faith in your products

        Kim Robinson
        26th March 2026 Verified
      • Trustpilot 5 stars

        Excellent service

        Excellent service quick delivery polite delivery manmattress extremely comfortable all round 5 star service

        R Woodbridge
        26th March 2026 Verified
      • Trustpilot 5 stars

        Good quality mattress

        The quality of mattress lived up to expectations for my daughters bedroom one finished decorated. One is greatful beyond measures, thank you for your services top marks

        Tony
        26th March 2026 Verified
      • Trustpilot 5 stars

        Communication was excellent

        Communication was excellent. No staying in waiting for the delivery. The delivery men were very helpful and courteous. The mattress is of high quantity and I think exceptional value.Even my back is better after only two nights!

        John Llewelyn Richards
        26th March 2026 Verified
      • Trustpilot 5 stars

        Quick delivery just four days after

        Quick delivery just four days after order placed, and free to my door. Kept me informed about when to expect them even though delivery was on a sunday.Thanks brilliant service

        Mskathrinejrust
        26th March 2026 Verified
      • Trustpilot 5 stars

        Fantastic service

        Fantastic service, I researched mattresses for weeks & this one had great reviews and a long guarantee. It arrived very quickly, easy to unroll. Left it the required time and oh I wish I had purchased earlier. I have arthritis of hips, spine and knees & was waking every few minutes with pressure point pain. I dont suffer that at all now it went within a couple of days. I still have pain but not where my joints meet the mattress. I paid 404.00 with a mattress protector so not the most expensive mattress but worth every penny in fact it looks & feels way more expensive. Its a shame to cover it up with bedding it looks lovely!

        Susan Whittaker
        26th March 2026 Verified
      • Trustpilot 5 stars

        Absolutely top class delivery service.

        Absolutely top class delivery service.Two very eager to please lads willing to assist me with a very heavy firm mattress.I would highly recommend.

        G Hughes
        26th March 2026 Verified

      Help & Buying Guides

      What are the different types of firm mattresses?

      Firm mattresses come in a range of different types to suit all sleepers:

      • Memory foam

      • Pocket sprung

      • Miracoil™

      • Traditional sprung 

      • Natural fillings

      • Geltex

      Whether you’re a front, side or back sleeper, prefer a more responsive feel or need to stop your partner’s night-time wriggling from disturbing your sleep, you can choose from a huge selection of firmer options here at MattressNextDay.

      Memory foam

      Designed for NASA’s space program, memory foam is incredibly supportive and comfortable. It moulds to the shape of your body, minimising pressure points and cradling your body for all-night comfort. Firm memory foam mattresses are usually single-sided, so they’re easy to look after, too.

      Pocket sprung

      A matrix of high-tensile steel springs sits in individual fabric pockets to create one of the best firm mattresses available. Each spring can act independently as well as respond to its neighbours, so movement transference is minimised. Incredibly comfortable and long-lasting.

      Miracoil™

      Exclusive to Silentnight, this unique system is designed to provide outstanding support with no roll-together or movement transference. Particularly suitable for front sleepers, these mattresses are top-quality options with plenty of extra comfort features.

      Traditional sprung 

      Using a matrix of interconnected springs, traditional sprung firm mattresses are a great budget option that provides good levels of comfort and support. They’re ideal if you want to replace a guest bed mattress and can be combined with mattress toppers for extra comfort.

      Natural fillings

      Using fillings such as pure wool, bamboo, and cotton, these mattresses are often naturally hypoallergenic. This makes them ideal for people who suffer from allergies or respiratory conditions as they create a healthier sleeping environment with fewer allergens.

      Cooling gel and Geltex

      One issue with memory foam mattresses is that they can often feel a little on the warm side. Cooling mattresses such as Geltex mattresses include a gel layer that keeps the sleeping area cooler and fresher, making them perfect for sleepers who suffer from night sweats or hot flushes.

      Is a firm mattress good for your back?

      Thinking about investing in a new mattress for back pain? It is recommended to select a firm mattress to help combat pain in your back or spine when you sleep. If your mattress is too soft and unsupportive, you can sink into it too deeply which can cause your back to curve.

      If your surface is too hard, though, you can put too much pressure on different parts of your body, leading to aches, pains and stiffness. A decent firm mattress can prevent your spine from arching as you sleep, helping you to keep a healthy alignment and avoid back pain, stiffness and other bodily aches. They can also help to ease joint pain, making them effective mattresses for arthritis.

      Why should I buy a firm mattress?

      Firm mattresses are ideal if you like sleeping on your back or your stomach, this kind of mattress can support your weight without causing pain to pressure points, such as your heels, toes, buttocks, ribcage, elbows, shoulders, and head. It's also the ideal mattress type for a heavy person, as it prevents your hips and shoulders from dipping too far into the mattress surface, keeping your spine aligned in order to avoid uncomfortable over-arching.

      Comfort is a very subjective area and what might be the right resistance for one person may be completely wrong for another so it’s important to know what kind of tension suits you before you buy. Our guide to mattress firmness can help you better understand the different types available.

      Do firm mattresses last longer?

      Firm mattresses are just like any other mattress in that they last for approximately eight years before you need to start thinking about replacing your old mattress. We advise that single-sided mattresses (often those made from memory foam) are rotated from head to foot every six months or so to avoid dips, lumps, and bumps from forming - read our guide to turning and rotating your mattress for more help.

      For double-sided mattresses, flipping and turning every few months will achieve the same effect, prolonging the life of your mattress and preventing those uncomfortable lumps from forming. The firmness rating of a mattress will not have any direct influence on how long it lasts.

      What are the benefits of a firm mattress?

      When using a firm mattress, you are helping your body to sleep peacefully each night with the correct alignment. If you have been bending during the day or sitting for long periods, after a hard day's work the stability that a firm mattress supplies will help greatly in reducing any pain you may currently feel.

      Many hotels have firm mattresses throughout their rooms. Some hotels add an extra element of comfort and luxury by adding a firm memory foam mattress topper on top of the mattress. This also helps prolong the life of a mattress as well as providing an extra level of support.

      Is next-day delivery available?

      With our 24-hour free delivery, your perfect firm mattresses can be at your doorstep as soon as possible. Browse our wide online selection today to explore options that are all handmade in the UK and offer the above benefits. Find out more by contacting our team who will answer any questions you may have.

      If you need help choosing the right mattress firmness for you, check out our Mattress Buying Guide for tips and tricks on how to choose the best type of mattress for you.