Shop By Category
Subscribe
More Options
5
Refined results
Refine
5
Refined resultsKing Size Foam Mattress
NOW
£ 269.00
£ 399.00
Dormeo Octasmart Plus Memory Foam Mattress - Double, King, and Super King Options - Pressure Relief & Breathable
10 bought
NOW
£ 179.00
£ 264.50
EARLY BIRD! MAX Hybrid Memory Foam Mattress - Pressure Relief & Support (Single, Double, King)
1 bought
NOW
£ 109.00
£ 219.99
Memory Foam Hybrid Sprung Mattress, 5ft king, Grey
5249 bought
NOW
£ 79.00
£ 190.00
Crushed Velvet Divan Bed with 4-Drawer Storage, Crushed Velvet & Memory Foam Mattress - Double, King or Single
211 bought
NOW
£ 129.00
£ 279.00
1500 Pocket Sprung Medium-firm Soufflé Mattress - Pressure Relief & Enhanced Support (Small Single to Super King)
20 bought
NOW
£ 27.99
£ 34.20
Trendi Inflatable Air Mattress with Built-In Electric Pump - Single or King Size
11 bought
NOW
£ 39.99
£ 89.99
Dreamcatcher Deluxe Inflatable Air Bed Mattress - Double or King, Enhanced Support
NOW
£ 135.00
£ 508.48
Coco Plush Velvet Upholstered Bed with Memory Spring Mattress - All-In-One Comfort & Style (Single to Super King)
2 bought
NOW
£ 103.00
£ 180.00
White Plush Divan Bed with Storage Drawers, Plush Upholstery & Memory Sprung Mattress - Single, Double, King
64 bought
NOW
£ 174.99
£ 499.99
PRICE DROP! Ottoman Divan Bed with Gas Lift Storage, Premium Fabric & Optional Mattress - Single, Double or King
- Brand: Sleep Softly Ltd t/a UKFurniture4U
- Gender: Unisex
- Location: National Deal
42 bought
NOW
£ 319.00
£ 404.00
Amos Beige Velvet Ottoman Bed with Side Lift Storage & Oval Headboard - Double or King Size
1 bought
NOW
£ 599.00
£ 1520.00
Dior Bespoke Bed Frame and Mattress, Super King, Grey Plush Fabric
1204 bought
NOW
£ 49.00
£ 129.99
Zig Zag Memory Fibre Hybrid Mattress - Single, Double, King & More
328 bought
NOW
£ 259.00
£ 475.00
Nectar Premium Memory Foam Mattress - 5 Sizes, Lifetime Warranty
184 bought
NOW
£ 43.99
£ 119.99
Hybrid Memory Foam Mattress with Cooltouch+ - Multiple Sizes
10 bought
NOW
£ 89.00
£ 227.99
Cooling Memory Foam Mattress with Adaptive Support - 5 Sizes
1 bought
NOW
£ 60.00
£ 99.99
8‑Inch Orthopaedic Memory Reflex Foam Mattress - 6 Sizes
2 bought
NOW
£ 42.49
£ 119.99
Astral Hybrid Memory Foam Mattress with Cooling - Multiple Sizes
17 bought
NOW
£ 45.99
£ 169.99
Hand-Tufted Memory Foam Mattress - Pressure Relief, Multiple Sizes
23 bought
NOW
£ 59.00
£ 129.99
Kids Spring White Memory Foam Mattress - 3 Sizes
NOW
£ 49.00
£ 109.99
PRICE DROP! Extra-Thick Comfort Hybrid Support Memory Foam Mattress - 6 Sizes
167 bought
NOW
£ 69.99
£ 183.36
4-Inch Cooling Memory Foam Mattress - Pressure Relief & Ergonomic Support, 5 Sizes
1 bought
NOW
£ 19.99
£ 59.99
Premium Memory Foam Mattress Topper - 5 Sizes & Up to 5cm Thickness!
68 bought
NOW
£ 46.49
£ 189.99
Sleep-Fusion Hybrid Memory Foam Mattress 20cm Deep - Multiple Sizes
23 bought
NOW
£ 49.99
£ 159.00
Black Quilted Bubble Sprung Memory Foam Mattress - 5 Sizes, Medium-Firm
NOW
£ 67.00
£ 129.00
Ultra Reflex Memory Foam Mattress in 6 Sizes
14 bought
NOW
£ 199.00
£ 479.00
Soft Relief Memory Foam Mattress with Pressure Relief - 4 Sizes
NOW
£ 102.00
£ 439.00
Black Radley Divan Bed Set with Memory Foam Mattress & Optional Storage - 6 Sizes & 3 Storage Options - 6 Month Warranty
11 bought
NOW
£ 99.00
£ 290.00
Luxury Rio Divan Bed: Premium Memory Sprung Foam Mattress & Optional Storage Drawers - 6 Sizes & 10 Colours
550 bought
NOW
£ 50.00
£ 169.99
Zig Zag Extra Deep Sprung Memory Foam Mattress - 5 Size Options
NOW
£ 34.00
£ 109.99
Extra-Thick Comfort Hybrid Support Memory Foam Mattress - 6 Sizes
846 bought
NOW
£ 249.00
£ 569.99
30cm Saphire Harmony Hybrid Spring & Foam Mattress - 5 Sizes
NOW
£ 93.00
£ 199.00
Divan Bed with Headboard & Memory Foam Mattress - Black, All Sizes
18 bought
NOW
£ 55.99
£ 119.99
Nebraska Hybrid Memory Foam Mattress With Cooling Technology - Multiple Sizes
1 bought
NOW
£ 299.00
£ 780.00
York Ottoman Bed and Memory Foam Mattress - 6 Sizes & 4 Colours
9 bought
NOW
£ 51.99
£ 114.99
Hybrid Memory Foam Mattress - Pressure Relief & Soft Comfort, Multiple Sizes
6 bought
NOW
£ 169.00
£ 255.00
Optima 20cm Gel Memory Foam Mattress with Hypoallergenic, Cooling Cover - 8 UK & EU Sizes
NOW
£ 44.99
£ 130.99
3-Tac Hand-Tufted Memory Foam Mattress - Ergonomic Support, Multiple Sizes
8 bought
NOW
£ 179.00
£ 529.00
Rem-Fit Hybrid Pocket 1000 Memory Foam Mattress - Pressure Relief & Support, 4 Sizes
62 bought
NOW
£ 49.00
Ultra Gen Reflex Foam Hybrid Mattress - Seven Sizes
1 bought
NOW
£ 50.00
£ 119.99
Memory Foam Spring Mattress - 5 Sizes!
7 bought
NOW
£ 49.00
£ 159.00
Ultra Cool Blue Memory Foam Hybrid Mattress in 7 Sizes
11 bought
NOW
£ 49.00
£ 159.00
Ultra Gen Memory Foam Hybrid Mattress - Pressure Relief & Support, 7 UK Sizes
15 bought
NOW
£ 49.00
£ 159.00
Ultra Cool Memory Foam Hybrid Mattress - Pressure Relief & 7 Sizes
2 bought
NOW
£ 49.00
£ 159.00
Ultra Gen Memory Foam Hybrid Mattress - 7 UK Sizes, Pressure Relief & Support
2 bought
NOW
£ 49.00
£ 170.00
Memory Foam Tufted Mattress - Pressure Relief & Support in 5 Sizes
6 bought
NOW
£ 47.00
£ 189.99
Grey Memory Foam Hybrid Mattress - 7 Layers, Cooling, 5 Sizes
5 bought
NOW
£ 43.99
£ 119.99
Hybrid Memory Foam & Coil Sprung Mattress - Medium Soft, Multiple Sizes
6 bought
NOW
£ 69.00
£ 169.99
Grey Castle Memory Foam Spring Mattress - 5 Sizes!
NOW
£ 49.00
£ 159.00
Ultra Cool Blue Memory Foam Hybrid Mattress - 7 Sizes, Pressure Relief & Support
1 bought
NOW
£ 48.00
Hybrid Memory Foam & Innerspring Cool Touch Mattress - 5 Sizes
31 bought
NOW
£ 52.00
£ 169.99
White Wavy Memory Foam & Open Coil Mattress - 5 Sizes, Hypoallergenic
3 bought
NOW
£ 56.00
£ 174.99
Next Gen 7” Memory Foam Spring Mattress - 5 Sizes, 3 Colours
3 bought
NOW
£ 109.00
£ 259.00
Dream Memory Foam Pillow Top Mattress - 6 Sizes
NOW
£ 50.00
£ 389.01
Elegance Memory Foam Sprung Mattress - 5 Size Options, Pressure Relief & Cool Touch
192 bought
NOW
£ 59.00
£ 179.99
Memory Foam Wavy Spring Mattress - 5 Sizes Available
Transform your bedroom with a premium King Size Foam Mattress that blends cloud-soft comfort with dependable support. Whether you’re upgrading your master suite or furnishing a new space, this mattress delivers personalised pressure relief, generous surface area, and a breathable surface designed to keep you cool as you rest. From memory foam options to gel-infused layers, our selection is built to suit different sleep styles and room aesthetics.
Explore a range that combines advanced sleep technology with durable materials, so you can wake refreshed and ready for the day. A foam mattress king size is ideal for couples who still crave individual comfort, while maintaining a neat, uncluttered look in the bedroom.
Unbeatable Deals on Online King Size Foam Mattress
Our platform curates exclusive discounts on memory foam king size mattress, gel-infused options, and orthopaedic foams, helping you save without compromising quality. Look for certificates of durability, hypoallergenic covers, and easy-return policies when you shop for a king size foam mattress.
Whether you’re hunting for a budget-friendly cheap king size foam mattress deals or a premium model with enhanced cooling, you’ll find featured offers from trusted retailers that prioritise comfort, support, and value.
Frequently Asked Questions
What to Consider When Choosing a King Size Foam Mattress?
Size and space are the first questions. A king size memory foam mattress requires ample bedroom real estate, but the extra surface area can dramatically improve comfort for couples and restless sleepers. Check the profile height and edge support to ensure you won’t feel roll-off near the sides.
Materials matter for comfort and durability. A cooling foam mattress king size uses open-cell structures or gel infusions to promote airflow, while a denser core offers long-lasting support. For allergy sufferers, look for a hypoallergenic king size foam mattress with a removable, washable cover.
Firmness is subjective but critical. If you sleep on your back or stomach, a medium-firm option may provide better spinal alignment; side sleepers might prefer a slightly softer feel for pressure relief. Consider a model that offers a range of firmness cores or a two-sided design where applicable.
Maintenance is simple but important. A breathable cover, regular rotation, and a good mattress protector extend the life of your king size foam mattress and help maintain its shape and comfort over years of use.
What Are the Most Popular Types of King Size Foam Mattress?
Memory foam remains a favourite for contouring support and pressure relief. For enhanced cooling, look for gel-infused memory foam king size mattress or open-cell designs that promote airflow. If you prefer extra resilience, consider a hybrid approach that combines a foam comfort layer with a supportive pocketed spring base, maintaining the benefits of a memory foam king size mattress while improving bounce and durability.
Orthopaedic foam mattresses in a king size layout focus on spinal alignment and durable support, making them popular among back and joint sleepers. For buyers on a budget, there are cheap king size foam mattress options that still deliver solid comfort and warranty coverage.
How to Maintain a King Size Foam Mattress?
Protection starts with a removable, washable cover; wash according to manufacturer instructions to preserve fabric integrity. Rotate the mattress every 3–6 months to promote even wear, especially on a king size memory foam mattress that can flatten with prolonged pressure in the same spots. Use a high-quality foundation or slatted bed frame that supports the full area and prevents sagging.
Keep liquids away from the surface and avoid heavy-weight, sharp objects that could compromise the foam. If you need extra support for side sleepers or heavier individuals, consider a top layer or topper made of cooling foam that complements your main mattress without dramatically altering its feel.
With the right care, a king size foam mattress can deliver years of restful nights, supported by materials designed to resist sagging, bounce back quickly, and retain their form under daily use.
How Do I Choose the Right Firmness for a King Size Foam Mattress?
Firmness choice depends on weight distribution, sleep position, and personal preference. A heavier sleeper may prefer a firmer feel to prevent excessive sinking, while a lighter sleeper might opt for a softer contour for pressure relief on shoulders and hips. Many retailers offer trials or comfort guarantees on memory foam king size mattress options, allowing you to test the feel in your own bedroom before committing.
If sharing a bed, consider two-sided or dual-zone options that let each person choose a suitable feel. Some king size foam mattress models provide different firmness layers within a single mattress, enabling a customisable experience without purchasing separate beds.
Are Gel-Infused and Copper-Infused Foams Worth It?
Gel-infused foams are popular for cooling properties, helping dissipate heat during the night and maintaining a comfortable sleeping temperature. Copper-infused foams add antimicrobial properties and may offer additional resilience, though benefits can be subtle and vary by model. If you tend to sleep hot, a gel-infused memory foam king size mattress could be a worthwhile option to explore within your budget.
Always check product specifications, warranty terms, and user reviews when assessing whether these features justify the price difference in a king size foam mattress purchase.
What Are the Advantages of Buying a King Size Foam Mattress Online?
Online shopping for a king size memory foam mattress offers convenience, wide selection, and access to customer reviews to guide decisions. Compare firmness levels, cover materials, trial periods, and return policies to ensure you’re getting genuine value. Look for bundled offers with foundations, toppers, or protective accessories to maximise your sleep investment.
Whether you’re replacing an old mattress or updating to a better night’s sleep, a king size foam mattress can adapt to different sleeping styles and bedroom décors. With careful selection and reputable sellers, you can find a model that truly enhances comfort, support, and your overall well-being.