King Mattresses

Discover the King Mattresses Collection at Furniture Instore, designed to provide spacious comfort, support and quality sleep every night. A king size mattress offers generous sleeping space, making it an ideal choice for couples or anyone who prefers extra room to stretch out and relax.

Our collection includes a variety of mattress types such as memory foam, pocket sprung and hybrid designs, each created to deliver the perfect balance of comfort and support. Whether you prefer a firmer feel or a softer sleeping surface, there is an option to suit your personal sleep style.

Built with quality materials, these mattresses are designed to support proper spinal alignment and reduce pressure points, helping to improve sleep quality and overall comfort. Durable construction ensures long-lasting performance and consistent support over time.

Perfect for master bedrooms and larger sleeping spaces, the King Mattresses Collection combines comfort, durability and value, helping you create the ideal sleep environment with fast UK delivery available on selected models.

Single Mattresses

Mattresses

Double Mattresses

Lyon King Mattress 5ft

Vendor:
FurnitureInstore
Lyon King Mattress 5ft

Regular price £349.99
-2 Left in stock

Regular price RRP £499.99 | Sale price Save £150.00
Unit price per

Delivered within 7 days
5% Off

King Size 6-Inch Memory Foam Mattress

Vendor:
FurnitureInstore
King Size 6-Inch Memory Foam Mattress

Regular price Sale £229.99
0 Left in stock

Regular price Was £241.49 | Sale price Save £11.50
Unit price per

Delivered within 7 days

Frequently Asked Questions

What mattress sizes do you offer in King Mattresses?

This range is available in all UK sizes from Single up to Super King. Full dimensions and depths are listed on each product page.

How firm are these mattresses?

We offer a range of tensions from soft to firm across this collection so you can pick the support level that suits your sleeping style — the firmness rating is shown on each product.

Do you offer fast delivery on mattresses?

Yes. We offer fast UK delivery on this range, with free delivery available on most items. Delivery times and any costs are shown at checkout, and larger items are delivered by our two-person team to your room of choice.

Can I spread the cost of my order?

Yes. You can spread the cost with our Buy Now, Pay Later options including Klarna, PayPal, Clearpay and DivideBuy, subject to status. Simply choose your preferred provider at checkout.

What is your returns policy?

We offer a 14-day returns policy on unused items in their original condition. If anything isn't right, contact our team and we'll arrange a collection or exchange.