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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, from firm single mattresses to super king size, 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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Based on 21,561 reviews

Trustpilot Star rating Verified

Great service and communication . Delivery was on time and the delivery men friendly and helpful. Would definitely recommend. Very pleased with mattress, thanks!only negative cost of removing old single mattress was a bit pricey.

Lin B 29th Feb
Trustpilot Star rating Verified

Mattress delivered quickly and taken to my room as I asked. Delivery drivers missed the old one being taken away but checked paperwork and grabbed it.Website was decent, prices were fair and beat the competition (recycling and delivery were over 30 cheaper) and their range was great

Kevin Smith 29th Feb
Trustpilot Star rating Verified

Excellent. Highly recommend. Next day delivery. Clear efficient communication. Call an hour before hand to confirm arrival time. Product is excellent. Nothing to fault.

Andrew 29th Feb

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.


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.

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 - 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.