King Mattresses

At 5 feet wide and 6 feet 6 inches long, king size mattresses are our second largest mattress. They offer plenty of space for couples and are available with a range of mattress fillings and comfort grades. No matter your budget, the luxury of a 5ft mattress is not beyond your reach.

What types of king size mattresses are there?

We have a wide range of affordable and high-quality king size mattresses available; each type has its own benefits:

Memory foam king size mattresses

A king size memory foam mattress features advanced technology designed to maximise your sleep experience. The mattress will soften and respond to you and your sleeping position. This makes these mattresses great for keeping you comfortable all night long.

Pocket spring king size mattresses

Providing great support, a king size pocket spring mattress is not as warm as some other types, and will keep you cooler during the night. Each spring is independent, meaning the mattress responds perfectly to your sleep position and movement, evenly distributing your bodyweight.

Traditional spring king size mattresses

A king size traditional spring mattress is usually the most affordable option, making them great for those on a budget. However, this doesn’t mean that they lack quality. They are often hand-tufted and feature edge-to-edge support. This is a good choice for those looking for a cheap king size mattress. The firmer options tend to offer good back alignment properties, which is perfect for those who need extra spinal support.

Zip and Link king size mattresses

With a Zip and Link mattress you can have varied technologies and comfort levels within one design. This makes them a popular choice for couples. For example, if your partner is fond of a firm mattress but you prefer something softer, a zip and link mattress could be an ideal solution as you both get to sleep on what you want.

Which king size mattress is best for me?

Identifying which king mattress is best depends on a number of things. Think about your sleeping position, the support you need and your budget to find your perfect mattress.

For instance, if you sleep on your side, you'll probably need a mattress with plenty of cushioning. For this, a softer comfort grade is best, look for medium or soft, as these allow you to sink slightly into the mattress whilst still supporting your spine.

For those who sleep on their front or back a 5ft mattress in a firmer grade could be a more suitable choice. These provide increased support for your spine and joints from the pressure that can build up from sleeping in these positions.

Which ever support grade you need, you can be sure that the king size mattress of your choice will give you the comfort and luxury that this size of mattress is known for. With cushioned tops, plenty of support, and extra space, you'll feel like you're in a hotel bed every night.

Choosing a king size mattress is an important investment – one that’s going to last for years. That’s why we want to make sure you get the very best. Our 40-Night Sleep Guarantee gives you the option to swap your mattress for another after sleeping on it for 30-40 nights (Ts & Cs apply).

If you're still unsure which king size mattress is best for you, check out our guide to mattress types.