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Top 10 Best Double Size Mattresses UK
Updated February 2025

Top 10 Best Double Size Mattresses UK

You will spend a third of your life on a mattress. We are here to help you make a better choice when buying an online mattress in the UK. We provide detailed reviews of the best rated double size mattresses in 2025.

Disclosure: We receive referral fees from the brands listed below.

Our Top Choice

  • 1
    Best Hybrid
    Dreamcloud Mattress
    January SALE | Up to 52% OFF
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    • Materials: Hybrid memory foam and innerspring coils
    • Firmness: Medium luxury firm
    • Shipping: Free delivery and returns
    • Trial Period: 365 days
    • Warranty: Lifetime Warranty
    • Financing: As low as 0% APR financing with DivideBuy or Klarna
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    Top-quality materials for superior comfort
    • Buy now, pay later
    • Cashmere-blend quilted cover
    • Free shipping & returns
    • 365-night sleep trial & lifetime warranty
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    9.9 Outstanding
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Side-By-Side Comparison

Best Double Size Mattresses 2025
Best Hybrid
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Best Overall
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Model Dreamcloud Mattress Simba Mattress Simba Mattress Review Nectar Hybrid Mattress Nectar Mattress Hypnia Supreme Hybrid Mattress
Material Hybrid Hybrid Hybrid Hybrid Foam Hybrid
Cooling 9.5/10 9/10 7/10 9/10 8/10 7/10
Firmness 6.5/10 6.5/10 6/10 6.5/10 6.5 / 10 6.5/10
Motion Isolation 7/10 8.5/10 8/10 7/10 8/10 7/10
Trial Period 365-Night Trial 200-Nights 200-Nights 365-Night Trial 365-Night Trial 200-Night Trial
Free Shipping and Returns Yes Yes Yes Yes Yes Yes
Warranty Lifetime 10 Years 10 Years Lifetime Lifetime 15 Years
Price Level Dollar Dollar Dollar Dollar Dollar Dollar Dollar Dollar Dollar Dollar Dollar Dollar Dollar Dollar Dollar Dollar
Special Sales
January SALE | Up to 52% OFF
Winter Sale | Up to 20% OFF Selected Mattresses
Winter Sale | Up to 20% OFF Selected Mattresses
January SALE | Up to 47% OFF
January SALE | Up to 47% OFF
Winter Sale! Get Up to 65% Off
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How to Choose the Best Double Size Mattress 2025?

Buying a mattress is not something that we do regularly. Since you’re here, the chances are you’re either replacing an old and worn-out mattress or buying your first. Either way, you’re likely overwhelmed by the various brands available today. But what you’ll find even more confusing are the different mattress technologies and the jargon used in the market. In this ultimate mattress buying guide, we’ve highlighted some critical tips to guide you when choosing the best mattress to buy today.

Despite using almost similar names, British, European, and American mattress dimensions differ significantly. If you're thinking of getting a new double mattress in the UK, here is an insight into its dimensions and how to choose from the different options. 

How to Choose the Best Double Size Mattress 2025?

What is a UK Double Bed Size?

The double size mattress dimensions in the UK are 135 x 190 cm (4'6" x 6'3"). This mattress is around 15 centimeters wider than the small double mattress that comes in at 120 x 190 cm. Importantly, note that the UK double size mattress is a centimeter narrower but a centimeter longer than the US double bed version that measures 136 x 189 cm (4'5" x 6'2"). 

Should I Buy a Double Mattress? 

The UK double size mattress tends to strike a balance between comfort and space-saving. This is a practical option for couples (or two adults) who want a mattress that will fit nicely in small and average-size bedrooms. It will also be perfect for solo sleepers who enjoy a bit more room. 

Which is the Best Double Size Mattress to Buy in the UK? 

The double is the most common mattress size in the UK, thanks to its practicality. This means that you'll have multiple options to choose from online and in most physical stores. Generally, your choice of the best double mattress to buy will come down to personal mattress material preference. 

These double size mattress types are the most popular in the UK:

  • Open spring- the inner of the mattress consists of a piece of metal coiled into multiple springs. Also known as continuous or open coil mattresses, they are an excellent option for people on a budget. These mattresses have the least support and are, therefore, best suited for guest rooms and other infrequently used bedrooms. 
  • Pocket spring - this mattress features individual springs, each encased in a fabric pocket. This design makes the mattress more supportive, even for heavier people. These mattresses are heavy and can be cumbersome to move around.
  • Memory foam - this is a contemporary mattress style made from a malleable visco-elastic material. It responds to your body weight and temperature to contour to your body shape. High-density memory foam double mattresses can provide good support for excellent spinal alignment and pressure relief. Memory foam is less breathable and can lead to sweaty nights.
  • Latex mattresses - latex mattresses made from the sap of rubber trees are a fantastic option if you prefer a natural mattress. These mattresses boast the malleability and pressure relief properties of memory foam, but they are more breathable. On the downside, latex mattresses are considerably pricier and can be more rigid.
Our Top Picks
for February 2025
Dreamcloud Mattress
Best Hybrid
Dreamcloud Mattress
Hybrid | 6.5/10
Dreamcloud Mattress
CHECK PRICE
January SALE | Up to 52% OFF
Simba Mattress
Best Overall
Simba Mattress
Hybrid | 6.5/10
Simba Mattress
CHECK PRICE
Winter Sale | Up to 20% OFF Selected Mattresses
Simba Mattress Review
Simba Mattress Review
Hybrid | 6/10
Simba Mattress Review
CHECK PRICE
Winter Sale | Up to 20% OFF Selected Mattresses