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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.

      73 results

      Read what our verified customers are saying

      • Trustpilot 5 stars

        Ordered and delivered within 26 hours

        Ordered on a sunday and was delivered next day, a third of the price when comparing to official website or other sires such as argos, nd free delivery thrown in so was really pleased. Great deal! only let down was delivery which was two hours outside confirmed delivery window but this could have been because of traffic?

        Maggie Cordell
        2nd April 2026 Verified
      • Trustpilot 5 stars

        Excellent delivery

        Excellent delivery. Next day as promised. Great protector. Not noisy. Fits great on our adjustable beds

        Claire
        2nd April 2026 Verified
      • Trustpilot 5 stars

        Excellent service

        Lots of choices of mattresses, ordering was so easy and delivery next day was exceptional. Couldn't have asked for anything better. The mattress we purchased is excellent and definitely value for money

        Lorden
        2nd April 2026 Verified
      • Trustpilot 5 stars

        Excellent service

        Excellent service. Mattress ordered friday lunchtime, delivered to the bedroom by saturday lunchtime. Delivery team friendly, efficient, could not fault the experience.

        Liz F
        2nd April 2026 Verified
      • Trustpilot 5 stars

        Good quality

        Good quality. Been using it for 2 weeks now and comfortable sleep. Strangely lot comfortable than our previous mattress that we paid over 1500 for. Obviously this doesnt fall under luxury product but its comfortable and works perfectly in our spare room.

        Komal
        2nd April 2026 Verified
      • Trustpilot 5 stars

        A Company Worthy of Trust

        A company worthy of trustmy choice of mattress stocked by this firm lives up to expectations and the company's service could not have been better. 35 cm thick, the luxurious mattress, wrapped in thick packaging, was delivered with great care upstairs beneath the deep bulk-head of my steep staircase. I was pleased to find it was accompanied by its own individual, deep protective cover, befitting a product of this calibre. I have never slept so well before in my life and would recommend this company wholeheartedly as an efficient and prompt supplier of very special, high quality goods.

        Elizabeth Tierney
        2nd April 2026 Verified
      • Trustpilot 5 stars

        First class company to deal with

        First class company to deal with. Excellent website, prices, communication and delivery. The delivery men were very polite and extremely efficient, they even thanked me for having put my old mattress outside in order to make it easier for them to collect. This was the third time that we have dealt with this company and they are a shining light in how business should be conducted, very well done and highly respected. Regards gordon.

        Gordon
        1st April 2026 Verified
      • Trustpilot 5 stars

        So easy to order online and the

        So easy to order online and the delivery service amazing. This mattress is so comfortable and I had the best sleep

        Kerrie Jones
        1st April 2026 Verified
      • Trustpilot 5 stars

        Exactly what it says on the tin

        Exactly what it says on the tin. Mattress arrived when I wanted it to. Seemed reasonably priced. No issues.

        Customer
        1st April 2026 Verified
      • Trustpilot 5 stars

        Delivered on the agreed date and time.

        Delivered on the agreed date and in the expected time given by a vey pleasant, cheerful and helpful young man.

        Denise Baines
        1st April 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.