Best King Mattresses in the UK: How to Choose Comfort and Space for Better Sleep
A king size mattress is one of the most luxurious upgrades you can make to your sleep routine. Designed to offer more space, improved comfort and better sleep posture, a king mattress provides both couples and individuals the freedom to stretch, move and relax without feeling restricted. As UK homeowners continue to prioritise better sleep and premium comfort, the king mattress has become a highly popular choice.
This guide covers everything you should consider before purchasing a king size mattress, including sizing, firmness options, mattress materials and special features suited for UK sleepers.
What Is a King Size Mattress in the UK?
A UK king size mattress measures 150 cm x 200 cm. This additional width compared to a double mattress allows both sleepers to enjoy more personal sleeping space.
Ideal for:
• Master bedrooms
• Couples who toss and turn
• Taller sleepers needing more legroom
• Individuals who prefer spacious sleep comfort
Upgrading to king size improves relaxation while reducing nighttime disturbances.
Benefits of a King Size Mattress
More Personal Space
Couples sleep without crowding, improving sleep quality.
Better Weight Distribution
Larger sleep area supports better alignment and reduces pressure spots.
Adds Luxury to Bedroom Décor
A king mattress creates a strong bedroom focal point and enhances visual presence.
Suitable for All Sleep Positions
Whether you sleep on your back, side or stomach, king mattresses offer versatile support options.
Best Mattress Types for King Size Beds
Pocket Spring Mattresses
Strong body support with excellent motion control.
Learn more in our Pocket Spring Mattress Buying Guide.
(This will link to Blog 13)
Hybrid Mattresses
Combining springs and foam layers for balanced comfort and pressure relief.
Memory Foam Mattresses
Ideal for contouring the body and relieving joint stress.
Cooling Mattresses
Designed for hot sleepers, promoting airflow and temperature balance through the night.
Firmness Guide for King Mattresses
Consider sleep habits and personal preference:
| Firmness Level | Suitable For |
|---|---|
| Soft | Side sleepers needing shoulder and hip cushioning |
| Medium | Combination sleepers needing blended comfort |
| Firm | Back sleepers or those with back support needs |
The right firmness ensures proper spinal alignment.
Who Should Buy a King Size Mattress?
• Couples needing more space
• Anyone suffering from restless sleep due to partner movement
• People investing in long-term sleep health
• Homeowners with larger bedrooms
• Tall individuals requiring extra length
A king mattress adds comfort and value to daily sleep routines.
Additional Buying Considerations
Before selecting a king mattress, evaluate:
• Room size and bedside furniture spacing
• Mattress breathability and cooling
• Material durability and long-term support
• Edge support quality
• Trial period or return policies
A well-chosen mattress can last 7–10 years with consistent comfort.
Why Buy a King Mattress from Bedmonkey?
Bedmonkey offers high-quality king mattresses engineered for comfort, support and longevity. Our advantages include:
• A selection of pocket spring, memory foam and hybrid king mattresses
• Firmness levels tailored to different sleeping habits
• Advanced motion isolation ideal for couples
• Breathable mattress construction for cooler nights
• Long-lasting structure for years of comfortable sleep
• Convenient UK-wide delivery
• Pairing options with handcrafted king beds and headboards
• Seasonal values for cost savings
Customers can also request advice based on sleep position and comfort preference.
Final Thoughts
A king size mattress is a smart investment in better sleep quality. With more room to move, better pressure relief and improved overall comfort, king mattresses suit couples and anyone with the space to enjoy full sleep freedom. Choosing the right support level and mattress type ensures the upgrade delivers both luxury and health benefits.
Explore king mattresses at Bedmonkey and transform your bedroom into a space designed for superior sleep comfort.
Related Articles
• Pocket Spring Mattresses UK: Support, Comfort & Buying Guide