UK's Best Mattresses

How to Choose the Perfect Mattress

Choosing a new mattress is a personal journey. We spend a third of our lives in bed, so getting it right matters. As trusted sleep experts (current online retailer of the year & trusted online since 2003), we have broken down the key factors to help you decide.

Shop by Mattress Type

• Pocket Sprung Mattresses: The gold standard for support. Each spring works independently to contour to your body and prevent "roll-together", perfect for couples.

• Memory Foam Mattresses: Originally developed by NASA, this material moulds to your shape using body heat, offering pressure relief for aching joints.

• Hybrid Mattresses: Can’t decide? Get the best of both worlds. Hybrids combine the bounce of springs with a top layer of foam, latex, or gel.

• Orthopaedic Mattresses: Designed specifically for those who suffer from back pain, providing a firmer surface to promote healthy spinal alignment.

Finding the Right Firmness

Your sleeping position is the #1 indicator of the firmness you need. (Read our full Mattress Firmness Guide for a deep dive)

• Side Sleepers (Soft to Medium): You need a softer surface to allow your hips and shoulders to sink in, keeping your spine straight.

• Back Sleepers (Medium to Firm): A slightly firmer feel supports the lower back (lumbar) while maintaining comfort.

• Front Sleepers (Firm to Extra Firm): You need maximum support to prevent your hips from dipping, which can cause lower back strain.

Why Buy From MattressNextDay?

We aren't just a shop; we are the UK's sleep specialists. Here is why over 31,000 customers have rated us "Excellent" on Trustpilot:

1. Award-Winning Service: We are proud to be the 3-time NBF Online Retailer of the Year. This is the industry's highest seal of approval for safety, sustainability, and service.

2. Which? Best Buy Winners: We stock a huge range of mattresses that have been rigorously tested and endorsed by Which?, ensuring you get a product that lasts.

3. 100-Night Sleep Trial: It takes roughly 30 nights for your body to adjust to a new bed. If you don't love it after 100 nights, we'll swap it.

4. Eco-Friendly Disposal: We don't just deliver; we care for the planet. Add our Old Mattress Removal service at checkout, and we will recycle your old bed responsibly & sustainably.

What size mattress do I need?

From a Small Single for box rooms to a spacious Super King for luxury spacing, we stock every standard UK size. Check our Mattress Size Guide to measure up before you buy. The most popular sizes in the UK are the 4ft 6” Double, and 5ft Kingsize.

Do you offer mattresses for hot sleepers?

Yes! If you overheat at night, look for Cooling Gel Mattresses or Latex models. These materials are naturally breathable and wick away moisture better than standard foam. If you want to know more about keeping cool at night, we have written an expert-approved cooling mattresses guide.

How often should I change my mattress?

The National Bed Federation recommends replacing your mattress every 7 to 8 years. Over time, support layers degrade, and hygiene can become an issue. If you wake up with aches or can feel the springs, it’s time for an upgrade.