Firm Mattresses | Up to 70% Off | Mattress Next Day

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Firm Mattresses

If you’re looking for extra support in bed, our range of firm mattresses is worth exploring. We offer firm mattresses in many different sizes, each with unique benefits and features ensuring that you can find the best mattress to suit your sleeping needs. Browse our collection below.

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How to choose a firm mattress

We offer a selection of mattresses online made from a variety of materials, including memory foam, latex and pockets springs, in a range of sizes, depths and spring counts.

If you gravitate towards a hard mattress, an extra firm mattress or an orthopaedic mattress may be right for you. Especially designed to evenly distribute your weight, these models could help you to put a stop to back, neck, shoulder and hip pain.

Is next day delivery available?

To find the perfect firm mattresses, browse our wide selection online today. All offer the above benefits and are handmade in the UK. With 24-hour free delivery, it will be with you as soon as possible once ordered.

Find out more by contacting our team who will answer any questions you may have.

What are the different types of firm mattresses?

Firm mattresses come in a range of different types to suit all sleepers. 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. And remember, you can save even more on your mattress with our free 24-hour delivery service to mainland UK addresses.

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 sit in individual fabric pockets to create one of the best firm mattress designs available. Each spring can act independently as well as responding to its neighbours, so movement transference is minimised. Incredibly comfortable and long-lasting. 


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 provide 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. 


One issue with memory foam mattresses is that they can often feel a little on the warm side. 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, meanwhile, 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.

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.

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.

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. For double-sided mattresses, flipping and turning every few months will achieve the same effect, prolonging the life of your mattress and avoiding 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 firm mattresses supplies will help greatly in reducing any pain you may currently feel.

What mattress firmness do hotels use?

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.