Mattress Online Discount Codes for March 2025

Established in 2003, Mattress Online stocks six different types of mattresses for your individual requirements. Enjoy optimum support with a memory foam mattress, comfort and firmness that suits you with a pocket-sprung mattress or premium back support with an orthopaedic mattress. As one of the largest mattress retailers on the internet, Mattresses Online is your go-to for affordable high-quality sleep products from huge brands like Silentnight, Sleepeezee, Silentnight and Tempur.

We love how easy it is to save money on award-winning orthopaedic, memory foam and pocket-sprung mattresses with Mattress Online Discount Codes and deals. They offer discounts of up to 65% on top sleep brands like Silentnight, Sealy and Simba so you can update your bedroom without breaking the bank!

Not only does Mattress Online supply Which? Best Buy mattresses at unbeatable prices, but they also deliver them for free and allow you to dispose of your old ones with the recycling service.

What's more, they provide high-quality bedroom furniture, bedding and accessories to finish off your room. With all these items in one place, they make it easier to shop for your bedroom essentials in one place, saving you time and money.

Enjoy a Free Sleep Trial

Discover a selection of mattresses from brands like Simba, Millbrook and Tempur with 60-night free trials.

• Take your new mattress home for two months to see if you like it. In the unlikely event that you’re not satisfied, you can return it to Mattress Online.
• Find loads of free-trial mattresses in the sale section alongside discounts of up to 60%!

Shop in the Sales

Take a browse through the Sale and Clearance sale pages for huge discounts of up to 65% on top-rated items.

• You’re almost guaranteed to pick up great savings on a high-quality mattress, bed or accessory so be sure to check it out.

Look out for Seasonal Offers

You'll find regular seasonal offers on the homepage that offer up to 50% off selected stock and brands.

• There are often flash codes available alongside these deals that provide further savings of around 20% such as the code EX20.

Sign up for Newsletter Savings

Be first to hear of all the latest money-saving deals when you sign up for the Mattress Online newsletter.

• You’ll be notified when the latest sale drops as well as special offers on selected items, plus new releases! Snap up these excellent offers first when you sign up.

Find Free Sleep Advice

Mattress Online helps you make the right choice for your sleep needs with the Advice Centre. This section offers expert guidance on selecting the perfect mattress and understanding different materials. The Sleep Journal also provides the latest insights and trends in sleep health, helping you stay informed and make educated decisions.

Make use of the Mattress Recycling Service

Mattress Online's mattress recycling service allows you to dispose of your old mattress responsibly when purchasing a new one from them. For a fee of £35, they'll collect your old mattress during delivery of the new one and make sure it is recycled in an eco-friendly way.​​

Over 66,000 Trustpilot Reviews

With over 66,000 reviews on Trustpilot and a 4.8* rating, Mattress Online maintains an excellent rating, reflecting their commitment to quality products and exceptional customer service. So you can shop with confidence, knowing that countless customers have had positive experiences with them.