We value your privacy

Our website uses cookies to enhance your experience, serve personalized ads and analyze our traffic. To learn more, see our Cookie Policy

100 Night Sleep Trial on ALL mattresses!
Recent Searches
    Suggestions
      Top Products

      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.

      72 results

      Read what our verified customers are saying

      • Trustpilot 5 stars

        Fantastic all round service

        Fantastic customer service, delivered when expected, delivery guys super helpful really couldn't ask for more!mattress is top quality too, very happy customer!

        Fiona Blythe
        23rd April 2026 Verified
      • Trustpilot 5 stars

        Great service and great communication

        Great service and great communication, delivered first thing the next day, extremely happy with product, would definitely use again.

        Michelle Wood
        23rd April 2026 Verified
      • Trustpilot 5 stars

        I dare say that this is the best

        I dare say that this is the best mattress that ive ever had. Thats what I need and im so satisfied. Fast delivery. Very helpful delivery men

        Florence
        23rd April 2026 Verified
      • Trustpilot 5 stars

        So happy with my purchase

        So happy with my purchase with this company. I was really worried about buying a mattress online and without trying first. Good that there is a guarantee where u can send back if it's not a match. I read lots of reviews which helped to sway my decision. Delivery was swift and the mattress was well packaged. The mattress itself is a dream. I needed a replacement for years really but didn't quite realise how much so. I absolutely looooove my new mattress. Great company. My 2nd purchase. Would definitely recommend.

        Charlotte
        23rd April 2026 Verified
      • Trustpilot 5 stars

        It was very easy from ordering to the

        It was very easy from ordering to the mattress being delivered straight to our bedroom. We were kept informed of the delivery time and it all went smoothly. The delivery men were very kind and efficient.

        Mrs Melanie Thirkell
        23rd April 2026 Verified
      • Trustpilot 5 stars

        Its a great mattress.

        Fast free delivery was great. Weve been sleeping on it for a couple of weeks now and its very, very comfy and appears to be well made too.

        Neil K
        23rd April 2026 Verified
      • Trustpilot 5 stars

        Came very fast

        Came very fast, no hassle, I wasnt in but they took it to the next door. Would like there to be a way to interact or get a call from drivers upon delivery but overall im happy.

        Nicolette Clancy
        23rd April 2026 Verified
      • Trustpilot 5 stars

        Everything was straight forward the men

        Everything was straight forward the men phoned and gave me a time. Collected my old mattress took my new one up inmy room. Thankyou

        Customer
        22nd April 2026 Verified
      • Trustpilot 5 stars

        Good value & swift delivery.

        Delivery right on schedule & the team were great, really polite & helpful.Mattress seems good but it's only been a few days.

        Chris
        22nd April 2026 Verified
      • Trustpilot 5 stars

        The deliver on the promise

        Overall I think you have been amazing .The delivery was quick. On the day of delivery the workers that dropped of the mattress were well mannered polite and very helpful. The quality of the mattress is amazing. You guys are doing great not much needs changing just continue with this quality of care

        Name
        22nd 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. These are often chosen by shoppers looking for breathable materials and a fresher-feeling sleep environment.

      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? Firm mattresses are often chosen by people looking for extra support, though comfort needs vary from person to person. 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 help support a more neutral sleeping position, helping you to keep a healthy alignment and avoid back pain, stiffness and other bodily aches. They can also be a good option for those seeking a firmer, more supportive feel.

      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, helping maintain a more neutral sleeping position.

      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 may find it easier to settle into a comfortable sleeping position. 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 may help improve comfort after a long day.

      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 additional layer of comfort and 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.

      Disclaimer: While our mattresses are designed to support healthy sleep posture, comfort is subjective. If you have a chronic medical condition or any health concerns, please consult a healthcare professional.