Shop By Category
Subscribe
More Options
56
Refined results
Refine
56
Refined resultsBed Mattress Deals - King Size
NOW
£ 119.00
£ 599.00
Memory foam quilted sprung mattress, King, 7''
362 bought
NOW
£ 279.00
£ 679.01
KING: A Sapphire 3000 pocket quilted ortho mattress
6799 bought
NOW
£ 129.00
£ 999.99
5FT KING: Extra thick 13-zone gel memory foam mattress
12550 bought
NOW
£ 119.00
£ 399.00
Lime hybrid memory and bonnell spring mattress, King
312 bought
NOW
£ 299.00
£ 399.00
Dormeo Rejuvenated Octasmart Plus Mattress - Double, King, Super King
8 bought
NOW
£ 799.00
£ 1118.87
EARLY BIRD! Round Panelled Plush Velvet Super King Bed with Mattress - 11 Colours
NOW
£ 89.00
Ottoman Divan Bed with Storage Drawers, Premium Metal Frame & Optional Mattress - Double, King & Super King
4 bought
NOW
£ 469.00
£ 828.00
An Arizona Bed with Mattress Options, Bed & iDream Mattress, King
727 bought
NOW
£ 219.00
£ 670.00
5ft wooden bed & mattress, King / with mattress, White
6108 bought
NOW
£ 469.00
£ 828.00
Arizona bed with headboard, King, With Mattress, Creme
381 bought
NOW
£ 39.99
£ 89.99
Dreamcatcher Deluxe Inflatable Air Bed Mattress - Double or King, Enhanced Support
88 bought
NOW
£ 129.00
£ 258.00
Elegant King Size Bed Frame & Base
5 bought
NOW
£ 299.00
£ 749.00
A Dreyton divan bed and memory foam spring mattress, 5FT King, No Drawers
235 bought
NOW
£ 469.00
£ 1320.00
Dior Bespoke Bed Frame and Mattress, King, Grey Plush Fabric
1197 bought
NOW
£ 299.00
£ 599.00
Elegant King Size LED Bed Frame with Storage
14 bought
NOW
£ 99.00
£ 589.01
An Elegance memory foam mattress, King
1966 bought
NOW
£ 269.00
£ 799.00
Grey divan bed with headboard and mattress, King, 2 Drawers
28408 bought
NOW
£ 419.00
£ 799.00
Grey Savoy wingback upholstered bed, King, With Mattress
372 bought
NOW
£ 109.00
£ 219.99
Memory Foam Hybrid Sprung Mattress, 5ft king, Grey
5087 bought
NOW
£ 199.00
£ 479.01
3000 pocket spring pillow top mattress, King
2892 bought
NOW
£ 79.00
£ 190.00
Crushed Velvet Divan Bed with 4-Drawer Storage, Crushed Velvet & Memory Foam Mattress - Double, King or Single
121 bought
NOW
£ 319.00
£ 405.00
Hampton wingback bed, King, No Mattress, Grey
75 bought
NOW
£ 89.00
£ 239.99
5FT KING: A grey zig zag memory fibre open coil sprung mattress
11374 bought
NOW
£ 399.00
£ 599.00
Dormeo Octasmart Hybrid Plus Memory Foam Hybrid Mattress - Pressure Relief & Breathable, Single/Double/King
2 bought
NOW
£ 249.00
£ 499.00
Pocket spring orthopaedic organic pillow top mattress, King
6585 bought
NOW
£ 115.00
£ 329.00
Extra deep memory foam sprung mattress, 5ft King
648 bought
NOW
£ 119.00
£ 209.00
Ultra-Cool Blue Memory Foam Hybrid Mattress, Super King - 180
269 bought
NOW
£ 259.00
£ 799.00
Grey fabric divan bed set, headboard and memory mattress, King, 2 Drawers
2094 bought
NOW
£ 108.00
£ 449.99
Cool blue memory foam spring mattress, King, 9
1129 bought
NOW
£ 92.00
£ 499.99
Cool Blue gel memory spring mattress, King, 6
443 bought
NOW
£ 199.00
£ 349.00
Silver Plush Velvet Florida Bed with Mattress - All-In-One Comfort & Style (Single to King)
17 bought
NOW
£ 99.99
£ 109.99
A Memory Foam Spring Open Coil Mattress, King
3907 bought
NOW
£ 389.00
A Cream Cannes Wingback Bed Frame, 5ft King
45 bought
NOW
£ 89.00
£ 449.99
Cool Blue gel memory spring mattress with black border, King, 10
456 bought
NOW
£ 159.00
£ 508.48
PRICE DROP! Coco Plush Velvet Upholstered Bed with Memory Spring Mattress - All-In-One Comfort & Style (Single to Super King)
3 bought
NOW
£ 459.00
£ 899.00
Chelsea Velvet Bed Frame with Ottoman Storage, 5ft King Size
18 bought
NOW
£ 199.99
£ 499.99
Ottoman Divan Bed with Gas Lift Storage, Premium Fabric & Optional Mattress - Single, Double or King
32 bought
NOW
£ 89.00
£ 180.00
PRICE DROP! White Plush Divan Bed with Storage Drawers, Plush Upholstery & Memory Sprung Mattress - Single, Double, King
198 bought
NOW
£ 119.00
£ 299.00
Double or King Sized Industrial Metal Bed Frame with Storage, LED Headboard, and USB Ports
107 bought
NOW
£ 79.00
£ 179.99
A grey sprung seven core layer memory foam mattress, King
16228 bought
NOW
£ 129.00
£ 279.00
Organic Cool-Touch 2000 Pocket Sprung Orthopaedic Mattress - Pressure Relief & Enhanced Support (Small Single to Super King)
46 bought
NOW
£ 179.00
£ 264.50
EARLY BIRD! MAX Hybrid Memory Foam Mattress - Pressure Relief & Support (Single, Double, King)
11 bought
NOW
£ 499.00
A Diagonal Liner Ottoman Storage Bed Frame, 5ft King Size
17 bought
NOW
£ 589.00
£ 1000.00
Velvet fabric ottoman bed, King, Lilac
88 bought
NOW
£ 499.00
£ 1399.99
Plush velvet ottoman divan bed set, 5ft King End Lift, Yellow
296 bought
NOW
£ 23.99
£ 38.99
5cm airflow mattress topper, King
2665 bought
NOW
£ 9.99
£ 24.99
Quilted Mattress Protector - Sizes Single - Super King
88 bought
NOW
£ 125.00
£ 250.00
Elegant Industrial King Bed Frame - Sturdy Metal Base, Easy Assembly
7 bought
NOW
£ 39.99
£ 129.99
Contemporary Metal Platform Bed with Slatted Frame - Single, Double, or King
3 bought
NOW
£ 98.49
£ 271.99
Ottoman Divan Bed Frame with Storage, Linen Upholstery - King
NOW
£ 299.00
£ 699.99
PRICE DROP! Elegant Boucle Bed Frame with USB Charging - Double or King
6 bought
NOW
£ 199.00
£ 325.00
Elegant Danish Modern Bed Frame & Base - Double/King
4 bought
NOW
£ 199.00
£ 699.99
EARLY BIRD! Modern Boucle Bed Frame & Base with Curved Headboard - Double or King
3 bought
NOW
£ 209.00
£ 340.00
Designer Brown Fabric Buttoned Headboard - Premium Brown Fabric, Double or King Storage Base
2 bought
NOW
£ 198.99
£ 314.99
5ft King Ottoman Divan Bed with Gas Lift Storage, Linen Upholstery
3 bought
NOW
£ 199.00
£ 649.99
EARLY BIRD! Linen Bed Frame with Plush Curved Headboard - Double or King in Grey or Beige
Discover the best Bed Mattress Deals - King Size and upgrade your sleep with confidence. At Wowcher UK, we curate a wide range of king size mattresses and compatible bed sets, from memory foam to hybrid and latex, all with substantial discounts. Whether you’re shopping for a brand-new king-size bed frame with a mattress or simply replacing your current mattress, you’ll find unbeatable prices, flexible delivery options, and trusted brands designed to support restful nights at a fraction of the usual cost.
Our selection includes memory foam king size mattresses for contouring comfort, hybrid mattresses that blend foam and springs for balanced support, and spring-core options with reinforced edge support. You’ll also find orthopaedic and orthopedic king size mattresses for extra spinal alignment, plus hypoallergenic and cooling memory foams for allergy-prone sleepers. Explore mattress toppers, protector sets, and base options to complete your sleep sanctuary, all at Wowcher UK’s best deals.
We understand that bed comfort is deeply personal. That’s why our Bed Mattress Deals - King Size pages highlight customer reviews, trial periods where available, straightforward returns, and clear delivery timelines so you can shop confidently. Dive into genuine discounts on trusted brands and discover the right mattress type to suit your sleep preferences, budget, and room layout.
Unbeatable Deals on Online Bed Mattress Deals - King Size
Browse exclusive online offers on king size mattresses that deliver lasting comfort without a premium price tag. From budget-friendly king size memory foam to premium hybrid options, Wowcher UK brings together top-rated products from renowned manufacturers with price reductions you’ll feel in your wallet and your sleep quality.
Our deals cover complete bed sets, including sturdy king size bed frames, matching headboards, and compatible foundations, so you can refresh the whole sleep setup in one easy purchase. Look for deals that include free or discounted delivery, extended warranties, and seasonal promotions that maximize value.
What to Consider When Choosing a King Size Mattress?
Size and firmness balance are key. A King Size mattress should be large enough to accommodate two sleepers, yet the level of firmness should match your preferred feel, soft for a plush cradle, medium for versatile comfort, or firm for strong support and spinal alignment.
Material matters. Memory foam king size mattresses contour to your body and reduce motion transfer, while hybrid options mix coil support with foam comfort layers for a responsive feel. Latex king size mattresses offer natural resilience and cooling, ideal for warmer sleepers.
Allergies and temperature control are important. Look for hypoallergenic covers and breathable fabrics, as well as cooling technologies that help regulate heat throughout the night.
Trial periods, warranties, and return policies vary. Check for a sleep trial on a king size mattress so you can confirm fit and comfort at home, plus warranty terms that protect your investment over time.
Delivery and setup matter. Many Wowcher UK deals include convenient delivery windows, white-glove setup options for king size mattresses, and easy return processes if the product doesn’t meet expectations.
What Are the Most Popular Types of King Size Mattresses?
Memory foam king size mattresses are favored for contouring comfort and excellent motion isolation, making them ideal for couples with different sleep schedules. Hybrid king size mattresses pair coils with foam or latex for a balanced, supportive feel and good bounce.
Latex king size mattresses provide natural responsiveness and cooling properties, often appealing to sleepers who want a more breathable surface. Orthopaedic or orthopedic king size mattresses focus on targeted support for the back and spine, which can benefit sleepers with chronic discomfort.
Innerspring or traditional spring king size mattresses deliver dependable support with strong edge stability, while pillow-top variations add extra plush on top for a cushioned experience. There are also hybrid hybrids with zoned support to accommodate different body areas along the length of the bed.
How to Choose a Memory Foam vs Hybrid vs Latex King Size Mattress?
Memory foam king size mattresses excel at contouring to your body shape, providing pressure relief and quiet sleep due to low motion transfer. If you share a bed, memory foam can minimize disturbances from a restless partner. However, some sleepers may prefer a bit more bounce and air circulation, where hybrid or latex options can be preferable.
Hybrid king size mattresses blend a supportive coil system with responsive foam or latex layers, delivering a balance of support, ease of movement, and comfort. Latex king size mattresses are naturally breathable and resilient, offering a cooler sleep surface and long-lasting durability for those who overheat at night.
Consider firmness preferences, sleep position, temperature regulation, and any chronic pain. If you sleep with a partner, also think about motion isolation, edge support, and the possibility of using a compatible adjustable base for personalized comfort.
Are There Hypoallergenic King Size Mattresses and Allergy-Friendly Options?
Yes. Many bed-in-a-box king size mattresses offer hypoallergenic covers, naturally resistant materials, and antimicrobial fabrics. Look for certifications or material descriptions that highlight dust mite resistance, breathable cotton or bamboo blends, and removable, washable covers to keep your sleep environment clean and comfortable.
For allergy-prone sleepers, a king size mattress with a removable cover and washable protector can significantly improve hygiene. Some mattresses also incorporate natural latex or gel-infused foams designed to reduce heat buildup and maintain a fresher sleeping surface.
What Are the Benefits of a King Size Mattress and Bed Set?
A king size mattress provides generous surface area for two sleepers, reducing disturbances and allowing more space to move freely. Pairing it with a matching king size bed frame and robust foundation creates a cohesive, durable sleep setup that resists sagging and contributes to better spinal alignment.
With Wowcher UK, you can often find complete bed sets that bundle a king size mattress, a compatible bed frame, and a sturdy base, delivering excellent value and simplifying the shopping process. This approach helps you optimize room layout while maximizing comfort and support throughout the night.
How to Maintain and Extend the Life of a King Size Mattress?
Rotate the mattress regularly to promote even wear, especially on a king size surface. Use a breathable mattress protector and occasionally flip if the model supports it. Keep the sleeping environment cool and dry to preserve materials and prevent moisture buildup, which can lead to mould or mildew.
Vacuum the mattress surface to remove dust and refresh the upholstery, and follow the manufacturer’s cleaning guidelines for any stains or spills. If you opt for a memory foam mattress, avoid exposing it to direct heat or sunlight for long periods, as this can degrade foam performance.
When shopping on Wowcher UK, look for deals that include extended warranties or trial periods so you can verify long-term comfort and fit. Pair your mattress with a compatible bed base that provides proper support and keeps the mattress in optimal condition over time.
How to Compare Bed Mattress Deals - King Size on Wowcher UK?
Start by comparing core specs: size (king size), type (memory foam, hybrid, latex), firmness rating, cover materials, and any cooling features. Check deal terms including delivery options, returns, and warranty length to ensure you’re getting real value.
Watch for bundled offers that include a king size mattress with a bed frame, foundation, and protective covers for a complete sleep solution. Read customer reviews and look for recent feedback on durability and comfort to gauge how a particular king size mattress performs over time.
Finally, confirm the discount applicability for your location and any seasonal promos. Wowcher UK’s bed mattress deals - king size section is designed to help you strike the best balance between price, quality, and long-lasting comfort.