King Size Pocket Sprung Mattresses

Why choose a king size pocket sprung mattress?

A king size bed only feels like a worthwhile upgrade if the whole mattress is comfortable to use. Pocket springs help with that because each spring moves separately, so the mattress can respond to pressure in different areas rather than dipping or shifting as one connected unit.

For couples, this can make the bed feel steadier when one person turns over or gets up. For taller sleepers, the 150cm x 200cm size gives extra length as well as width. The spring structure also allows air to move through the mattress, which can help it feel fresher.

How to choose the right king size pocket spring mattress

A king size mattress should give you space, but it also needs to feel comfortable across the full surface. If you share a bed, pay close attention to how steady the mattress feels, how well it supports both sleepers and whether the edges feel usable, not just the middle.

Then compare:

• Firmness: Medium and medium-firm mattresses can suit a wide range of sleepers, while firm mattresses may appeal to back and front sleepers who prefer a steadier surface.

• Spring count: Around 1,000 springs can be a strong starting point, while 2,000 or 3,000+ springs are often found in deeper or more premium designs.

• Edge support: Stronger edges can help you use more of the king size width, especially if you share the bed, sit on the side or sleep close to the edge.

• Comfort layers: Foam, gel, natural fillings, pillow tops and breathable fibres can all change how cushioned, cool or responsive the mattress feels.

• Bed base: Check whether the mattress will sit on a slatted frame, divan or ottoman base, as the base can affect the finished feel.

Why shop at MattressNextDay?

Next day delivery - Choose an in-stock king size pocket sprung mattress and get free next-day delivery across the UK mainland.

Lowest price promise - Compare king size pocket sprung mattresses from trusted brands with extra price reassurance.

Old mattress removal - Add old mattress removal at checkout and avoid moving a bulky king size mattress yourself.

Excellent reviews - Read verified customer reviews to compare comfort, service and delivery before you order.

Award-winning retailer - Order from a three-time NBF Online Bed Retailer of the Year.

British-designed quality - Shop British-designed mattresses made with carefully selected springs, fillings and comfort layers.

Need help choosing your next mattress?

Tell us how you sleep, whether you share the bed and the level of support you prefer. MattressFinder™ will help narrow the range to king size mattresses that suit your sleep needs. Find your perfect mattress.

Buying guidance for king size pocket sprung mattresses

Who is a king size pocket sprung mattress best for?

A king size pocket sprung mattress is best for sleepers who want more room without moving up to a super king. It can work well for couples, taller sleepers and solo sleepers who like space to stretch out.

If you share a bed, the main things to look for are steadiness, edge support and how much movement travels from one side to the other. A good king size mattress should let both sleepers use the space comfortably, not just the middle of the bed.

Understanding spring counts: Is 1,000, 2,000, or 3,000+ right for you?

Spring count is useful, but it shouldn’t make the decision for you. A higher spring count can mean a more detailed, responsive feel, but only when the rest of the mattress is well made too.

As a general guide, around 1,000 springs can be a strong starting point for everyday support. A 2,000-spring mattress may feel more substantial, while 3,000+ springs are usually found in deeper or more premium designs.

The best choice is the mattress that gives you the right mix of comfort, firmness, edge support and materials. If a lower spring count mattress feels better suited to how you sleep, do not choose a higher number just for the label.

Delivery, recycling, and guarantees

Free next-day delivery to most locations - Get your king size mattress quickly, with free next-day delivery available across the UK mainland for in-stock pocket sprung models.

Free weekend delivery - Choose a weekend delivery slot, if available, so your mattress arrives at a time that works for your schedule.

Choose a delivery date - Pick your preferred delivery date at checkout, making it easier to prepare the bedroom and arrange old mattress removal.

Learn more about our delivery and returns policies.

We make old mattress disposal easy for you

Just £39 to responsibly dispose of your old mattress - Add old mattress removal at checkout and MattressNextDay will collect your old mattress when your new one arrives.

100% of your mattress is reused and recycled - Every mattress is broken down into its core components so the raw materials can be repurposed instead of going to landfill.

A greener way to get rid of your old mattress - Avoid arranging disposal yourself and choose a recycling service designed to fit around your delivery.

Find a great value king size pocket sprung mattress

Looking for a supportive king size mattress at the right price? Explore the latest MattressNextDay sale and compare king size pocket sprung options by brand, firmness, comfort layer and delivery availability. Shop mattress sale.

Ask the expert about king size pocket sprung mattresses

Choosing a mattress is easier when you know what to compare. Our sleep experts answer common questions about king size pocket sprung mattresses, including size, spring count, edge support, partner movement and delivery.

Martin Seeley, Product Expert at MattressNextDay, answers questions about king size pocket sprung mattresses.

What size is a king size pocket sprung mattress?

A king size pocket sprung mattress measures 150cm x 200cm. It is wider and longer than a standard double, giving couples and taller sleepers more space

Are king size pocket sprung mattresses good for couples?

Yes, they can be a strong choice for couples. The king size gives you more room than a double, while the separate springs help reduce movement travelling across the mattress.

This can be useful if one person moves more than the other, gets up earlier or sleeps close to the edge.

What is edge support and why does it matter on a king size mattress?

Edge support helps the sides of the mattress feel steadier. On a king size mattress, this can make more of the 150cm width comfortable to use.

It is especially useful if you share the bed, sleep close to the edge or sit on the side of the mattress regularly.

What is zoned support in a pocket sprung mattress?

Zoned support means different areas of the mattress are designed to offer different levels of support. For example, some mattresses feel firmer around the hips and lower back, while offering more cushioning around the shoulders.

This can help keep your spine in a more natural position while reducing pressure around areas such as the shoulders, hips and lower back.

Is pocket sprung better than memory foam for a king size mattress?

Not always. Pocket sprung mattresses tend to feel easier to move on and more breathable, while memory foam mattresses feel closer and more cushioned. The best choice depends on the feel you prefer.

Compare below to make the most informed decision:

Can I get next day delivery on a king size pocket spring mattress?

Yes, all in-stock pocket sprung mattresses are available with free next day delivery across the UK mainland.

See our delivery page or individual product pages for the latest information.

How do I care for a double pocket sprung mattress?

Check the care label when your mattress arrives. Some pocket sprung mattresses should be rotated from head to toe, while others can be turned over.

Using a mattress protector and keeping the mattress on a suitable base can help it stay fresher and wear more evenly. A king size mattress can be heavier to move, so ask someone to help when rotating or turning it.