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Trustpilot 5 Star Rating

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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.

      64 results

      Read what our verified customers are saying

      • Trustpilot 5 stars

        After being let down by another company

        After being let down by another company (my mattress getting lost in transit). I was dubious about getting another mattress ordered however my delivery was on time and delivery updates were accurate. The two delivery chaps were efficient and polite and the old mattress taken away. Very pleased with the service and product.

        Sylvia Croot
        9th October 2026 Verified
      • Trustpilot 5 stars

        Easy to navigate the website

        Easy to navigate the website arrived in the time stated brought it straight in and removed the old on within minutes highly recommend

        Chris
        9th October 2026 Verified
      • Trustpilot 5 stars

        Great service

        Other suppliers were quoting long lead times. Ordered and the mattress we wanted was delivered the next at the specified time and our old one taken away. Very pleased.

        Wiltshire
        9th October 2026 Verified
      • Trustpilot 5 stars

        Love our new bed and base

        The ottoman bed and serenity mattress was deliveredon time and the delivery was very quick and efficient.So much storage in the ottoman base, wish I had got one years earlier.

        Wendy Almond
        9th October 2026 Verified
      • Trustpilot 5 stars

        Bought a replacement for our tired

        Bought a replacement for our tired hypnos, from looking at all the various ranges available, and choosing our replacement the process, delivery and quality of the product was faultless - thank you!

        Geoff H
        8th October 2026 Verified
      • Trustpilot 5 stars

        Sleepsoul Space, 2000 double mattress My daughter had purchased this mattress

        My daughter had purchased this mattress so I didn't have to do much research, I was able to check her mattress in the first instance. The mattress itself has a 10 year warranty and is which recommended. It was in the sale at the time and with a little research through money back options and my blue light card I had a little extra discount so this made it value for money also. The mattress is excellent quality and I feel very supported. I am able to sleep on my front without pain now which is great. There are two things I would like to make others aware of which I overlooked. Firstly, there is an extra charge for the mattress to be taken upstairs. I didn't notice this, initially I wasn't bothered as in my younger days I worked in a hotel and moving mattresses was standard - please pay to have your mattress taken upstairs. The mattress is 45kg and I couldn't move it by myself at all. The second thing. The mattress is very well wrapped, twice. The inner wrapping is thick plastic and vacuum packed, the outer wrapping is like a extra strong cling film. I have seen the comedy sketches where mattresses open and surprise people. I assumed it would be the inner layer which would spring the mattress open. It isn't! the outer cling film layer once you release it opens the mattress fully. I live alone, and it opened quickly and upside down, turning this over was a challenge so please be careful. The mattress is deep and feels luxurious. I had to order all new mattress protectors and sheets which is a lovely extra treat. My bed is now super high too. Great for me - I feel like a queen. But it makes it hard for my dog who now struggles to get on the bed ( and shes a big dog!), something else to bear in mind. I definitely recommend this mattress.

        Tracey
        8th October 2026 Verified
      • Trustpilot 5 stars

        Do exactly what they say

        Despite a late order was delivered on time by helpful crew. Choice of mattresses was vast with detailed measurements of each mattress in all sizes

        Mark Chinn
        7th October 2026 Verified
      • Trustpilot 5 stars

        Great company

        Great company, excellent communication, upto date information. Easy website to find the right products.Delivery service was excellent, customer service the lady was lovely and so helpful.Easy to order.

        Mimi
        7th October 2026 Verified
      • Trustpilot 5 stars

        The mattress was delivered on time and

        The mattress was delivered on time and the service from the team was excellent. They were friendly and helpful.

        Desiree Gouws
        7th October 2026 Verified
      • Trustpilot 5 stars

        From start to finish the process was

        From start to finish the process was easy, we we're kept updated all the way through to delivery. The delivery men we're exceptional, they went above and beyond expectations. The bed was exactly as described on the website. My brother is really really pleased with his new bed.

        Ms Karina Walton
        7th October 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.