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King size mattresses in the uk

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Trendi Inflatable Air Mattress with Built-In Electric Pump - Single or King Size

NOW

£ 27.99

£ 34.20

Trendi Inflatable Air Mattress with Built-In Electric Pump - Single or King Size

Raised height: 47cm high design feels like a real bed and allows easy access. Two sizes: Available in King and Single to suit different sleeping needs.

1 bought

Save 18 %!
Signature Fabric Storage Bed with Padded Headboard and Four Drawers - Double & King Size

NOW

£ 299.00

£ 465.00

Signature Fabric Storage Bed with Padded Headboard and Four Drawers - Double & King Size

Durable Construction: Strong frame and chrome feet for long lasting support. Quality Fabric Upholstery: Modern finish in your choice of four colours.
Save 36 %!
Artemis King Size Velvet-Finish Ottoman Bed with Cushioned Headboard

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£ 319.00

£ 329.99

Artemis King Size Velvet-Finish Ottoman Bed with Cushioned Headboard

King size comfort: Generous king size frame provides spacious sleeping room for couples and comfortable nightly relaxation. Perfect for: Master bedrooms, modern homes, luxury interiors, space saving storage and stylish contemporary bedroom décor.
Save 3 %!
Amos Beige Velvet Ottoman Bed with Side Lift Storage & Oval Headboard - Double or King Size

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£ 319.00

£ 404.00

Amos Beige Velvet Ottoman Bed with Side Lift Storage & Oval Headboard - Double or King Size

Neutral Design: Versatile beige tone complements a wide range of bedroom styles. Size Options: Available in Double and King to suit different spaces.
Save 21 %!
Memory Foam Hybrid Sprung Mattress, 5ft king, Grey

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£ 109.00

£ 219.99

Memory Foam Hybrid Sprung Mattress, 5ft king, Grey

5251 bought

Save 50 %!
Zig Zag Memory Fibre Hybrid Mattress - Single, Double, King & More

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£ 49.00

£ 129.99

Zig Zag Memory Fibre Hybrid Mattress - Single, Double, King & More

13.5 gauge open coil springs: Evenly distributes weight for enhanced support and restful sleep. Multiple sizes available: Choose from small single, single, small double, double or king.

334 bought

Save 62 %!
Dreamcatcher Deluxe Inflatable Air Bed Mattress - Double or King, Enhanced Support

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£ 39.99

£ 89.99

Dreamcatcher Deluxe Inflatable Air Bed Mattress - Double or King, Enhanced Support

Waterproof top: Soft flocked surface is waterproof and non slip for worry free sleep. Reinforced support: Internal structure delivers stable spinal alignment and supports up to 250kg.
Save 56 %!
1500 Pocket Sprung Medium-firm Soufflé Mattress - Pressure Relief & Enhanced Support (Small Single to Super King)

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£ 130.00

£ 279.00

1500 Pocket Sprung Medium-firm Soufflé Mattress - Pressure Relief & Enhanced Support (Small Single to Super King)

Hypoallergenic design: Dust mite resistant for a healthier sleep environment. Cool touch visco foam: Regulates temperature for year round comfort.
Save 53 %!
White Plush Divan Bed with Storage Drawers, Plush Upholstery & Memory Sprung Mattress - Single, Double, King

NOW

£ 103.00

£ 180.00

White Plush Divan Bed with Storage Drawers, Plush Upholstery & Memory Sprung Mattress - Single, Double, King

Premium Upholstery: Soft, durable VIBRANT plush fabric in a choice of sophisticated colours. Supportive Mattress: Memory sprung mattress delivers targeted comfort and pressure relief.

66 bought

Save 43 %!
PRICE DROP! Ottoman Divan Bed with Gas Lift Storage, Premium Fabric & Optional Mattress - Single, Double or King

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

43 bought

Save 65 %!
Dior Bespoke Bed Frame and Mattress, Super King, Grey Plush Fabric

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£ 599.00

£ 1520.00

Dior Bespoke Bed Frame and Mattress, Super King, Grey Plush Fabric

1204 bought

Save 61 %!
EARLY BIRD! MAX Hybrid Memory Foam Mattress - Pressure Relief & Support (Single, Double, King)

NOW

£ 179.00

£ 264.50

EARLY BIRD! MAX Hybrid Memory Foam Mattress - Pressure Relief & Support (Single, Double, King)

Edge Support: Reinforced sides prevent sagging and accidental roll offs. Machine Washable Cover: Soft microfiber cover is removable and easy to clean.

1 bought

Save 32 %!
Crushed Velvet Divan Bed with 4-Drawer Storage, Crushed Velvet & Memory Foam Mattress - Double, King or Single

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£ 79.00

£ 190.00

Crushed Velvet Divan Bed with 4-Drawer Storage, Crushed Velvet & Memory Foam Mattress - Double, King or Single

217 bought

Save 58 %!
Metal Full Bed Frame with Rustic Wooden Headboard & Footboard, Slat Support - Single, Double, or King Size

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£ 84.99

£ 175.99

Metal Full Bed Frame with Rustic Wooden Headboard & Footboard, Slat Support - Single, Double, or King Size

  • Brand: Mhstar Uk Ltd
  • Gender: Unisex
  • Material: Metal

1 bought

Save 52 %!
PRICE DROP! King Size Metal Bed Frame with Storage Headboard - Industrial Rustic Brown Steel, 5.2FT, High Capacity

NOW

£ 93.99

£ 255.99

PRICE DROP! King Size Metal Bed Frame with Storage Headboard - Industrial Rustic Brown Steel, 5.2FT, High Capacity

Quiet Construction: Non squeaky design for undisturbed nights. Spacious King Size: Plenty of room to stretch out. Strong Steel Frame: Reliable support for restful sleep. Easy Assembly: Simple setup with clear instructions.
Save 63 %!
Contemporary Metal Platform Bed with Slatted Frame - Single, Double, or King

NOW

£ 47.99

£ 129.99

Contemporary Metal Platform Bed with Slatted Frame - Single, Double, or King

Easy assembly: Simple to set up with all fixings included for quick installation. Perfect for: Guest rooms, rented spaces, or minimalist modern bedrooms.
Save 63 %!
Elegant Danish Modern Bed Frame & Base - Double/King

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£ 199.00

£ 325.00

Elegant Danish Modern Bed Frame & Base - Double/King

Contemporary Design: Grey fabric headboard and wooden legs create a soothing, modern aesthetic. Ample Storage: 15cm floor gap for storing essentials like slippers and blankets. Easy Assembly: Wooden slats with plastic caps make setup quick and simple. Size Options: Available in double or king sizes to suit your bedroom needs.
Save 39 %!
Amelia Wooden Bed Frame with Panelled Headboard & Oak Veneer Finish - Double or King Siz

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£ 125.00

£ 369.99

Amelia Wooden Bed Frame with Panelled Headboard & Oak Veneer Finish - Double or King Siz

Stylish Panelled Headboard: Painted finish adds a modern yet warm focal point. Size Options: Available in Double and King.
Save 66 %!
EARLY BIRD! Modern Boucle Bed Frame & Base with Curved Headboard - Double or King

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£ 200.00

£ 699.99

EARLY BIRD! Modern Boucle Bed Frame & Base with Curved Headboard - Double or King

Sturdy Construction: Durable wooden frame with reinforced slats ensures long lasting mattress support. Plush Boucle Upholstery: Soft teddy boucle fleece delivers comfort and a tactile finish for contemporary bedrooms.
Save 71 %!
Optima 20cm Gel Memory Foam Mattress with Hypoallergenic, Cooling Cover - 8 UK & EU Sizes

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£ 169.00

£ 255.00

Optima 20cm Gel Memory Foam Mattress with Hypoallergenic, Cooling Cover - 8 UK & EU Sizes

Pressure relieving design: Adapts to your body shape to reduce stress on joints, ease back pain, and promote healthy spinal alignment. Optima gel comfort: Experience cool, balanced sleep with the Optima 20cm Gel Memory Foam Mattress, designed for total body support and year round comfort.

1 bought

Save 34 %!
Ultra Gen Memory Foam Hybrid Mattress - 7 UK Sizes, Pressure Relief & Support

NOW

£ 49.00

£ 159.00

Ultra Gen Memory Foam Hybrid Mattress - 7 UK Sizes, Pressure Relief & Support

Hybrid support: 13.5 gauge open coil bonnell springs enhance durability and stability. Hypoallergenic: Dust mite resistant and ideal for allergy or asthma sufferers.
Save 69 %!
Ultra Gen Memory Foam Hybrid Mattress - Pressure Relief & Support, 7 UK Sizes

NOW

£ 49.00

£ 159.00

Ultra Gen Memory Foam Hybrid Mattress - Pressure Relief & Support, 7 UK Sizes

Seven Size Options: Choose from short single, small single, single, small double, double, king or super king to fit any bedroom. Spinal Alignment: Designed to promote correct posture and reduce back pain by evenly distributing body weight.
Save 69 %!
Ultra Cool Blue Gel Memory Foam Hybrid Mattress - 7 UK Sizes

NOW

£ 49.00

£ 159.00

Ultra Cool Blue Gel Memory Foam Hybrid Mattress - 7 UK Sizes

Medium firmness: Offers a balanced comfort level suitable for most sleep styles. Hypoallergenic design: Resistant to dust mites and allergens, ideal for allergy and asthma sufferers.
Save 69 %!
Luxury Polycotton Blossom Border Duvet Set - Soft, Breathable, Machine Washable Classic Bedding in Single, Double, King & Super King Sizes

NOW

£ 11.01

£ 20.00

Luxury Polycotton Blossom Border Duvet Set - Soft, Breathable, Machine Washable Classic Bedding in Single, Double, King & Super King Sizes

Premium Polycotton Blend: Enjoy soft, breathable comfort with a durable 50/50 polycotton fabric. Timeless Blossom Border Design: Effortlessly complements both modern and classic bedrooms.
Save 45 %!
Dormeo Rejuvenated Octasmart Deluxe Mattress - 4 Sizes!

NOW

£ 200.00

£ 439.00

Dormeo Rejuvenated Octasmart Deluxe Mattress - 4 Sizes!

Breathable Design: The Octavent™ Air system aids in expert circulation, making your mattress 8 times more breathable. Eco Friendly Mattress: Leaves 50% less environmental footprint and made to be 100% recycled!
Save 54 %!
30cm Saphire Harmony Hybrid Spring & Foam Mattress - 5 Sizes

NOW

£ 199.00

£ 529.99

30cm Saphire Harmony Hybrid Spring & Foam Mattress - 5 Sizes

Easy Roll Pack Delivery: Mattress arrives compressed for swift setup in any room. Durable Quality: High grade materials withstand daily use for lasting comfort.
Save 62 %!
10cm All Seasons Reversible Mattress Topper - Sherpa & Microfibre, 5 Sizes

NOW

£ 27.99

£ 79.99

10cm All Seasons Reversible Mattress Topper - Sherpa & Microfibre, 5 Sizes

Secure Fit: Elastic corner straps keep the topper firmly in place on any mattress. 10cm Depth: Adds a generous layer of cushioning for enhanced comfort and support.
Save 65 %!
Ezy Sleep Onyx Spring Foam Hybrid Mattress - 24cm or 30cm & 6 Sizes!

NOW

£ 209.00

£ 339.99

Ezy Sleep Onyx Spring Foam Hybrid Mattress - 24cm or 30cm & 6 Sizes!

6 Sizes: Choose from small single, single, small double, double, king and super king so everyone can look forward to nights of uninterrupted sleep. Cooling Technology: The mattress features a top layer of breathable material and has been covered by a cool sensation cover, which both work to regulate body temperature and circulate cool air.
Save 39 %!
Luxury Thick Pure Cotton Fitted Bed Sheet - Soft, Breathable & Machine Washable - Single, Double, King & Super King Sizes

NOW

£ 19.99

£ 39.99

Luxury Thick Pure Cotton Fitted Bed Sheet - Soft, Breathable & Machine Washable - Single, Double, King & Super King Sizes

Snug Fitted Design: All round 360° elastic hugs your mattress securely—no more bunching or slipping. Flexible Sizing: Available in Single (with one pillowcase), Double, King, and Super King (with two pillowcases).
Save 50 %!
Luxury Satin Fitted Sheet Bedding Set - Hypoallergenic, Deep Pocket, Machine Washable - Double, King & Super King Sizes

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£ 10.99

£ 19.99

Luxury Satin Fitted Sheet Bedding Set - Hypoallergenic, Deep Pocket, Machine Washable - Double, King & Super King Sizes

Deep Pocket Design: 40cm depth ensures a snug fit on even the thickest mattresses. Satin Smooth Comfort: Enjoy an ultra soft, silky touch for a restful night's sleep.
Save 45 %!
Milan Traditional Solid Wood Oak Bed Frame - Double & King Size

NOW

£ 219.00

£ 315.00

Milan Traditional Solid Wood Oak Bed Frame - Double & King Size

Easy Assembly: Simple instructions included. Solid Rubber Wood: Durable oak finish for lasting style. Choice of Sizes: Single, double or king to fit any bedroom. Sturdy Slats: Reliable support for restful nights.
Save 30 %!
Suffolk Break for 2 at Kings Hotel Newmarket with Dinner, Prosecco and Late Checkout

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£ 79.00

Suffolk Break for 2 at Kings Hotel Newmarket with Dinner, Prosecco and Late Checkout

Hotel: Stay at the modern and centrally located Kings Hotel Newmarket in Suffolk. Perfect for Valentines: A thoughtful gift they'll love—romantic, memorable and great value.

12 bought

PRICE DROP! Cooling 7-Zone Memory Foam Mattress Topper - Hypoallergenic, Breathable, Multiple UK Sizes & Depths

NOW

£ 32.99

£ 49.99

PRICE DROP! Cooling 7-Zone Memory Foam Mattress Topper - Hypoallergenic, Breathable, Multiple UK Sizes & Depths

Pressure Relieving Memory Foam: Contours to your body for tailored support and comfort. 7 Zone Support: Advanced zoned design targets shoulders, back, hips, and more.
Save 34 %!
Milan Traditional Solid Dark Wood Bed Frame - Double or King Size

NOW

£ 219.00

£ 315.00

Milan Traditional Solid Dark Wood Bed Frame - Double or King Size

Supportive Slats: Reliable support for a restful sleep. Solid Rubber Wood: Durable and built to last. Traditional Style: Timeless design suits any bedroom. Double or King Size: Choose the size that fits your space.
Save 30 %!
Teddy Bear Fleece Throw Blanket - Ultra-Soft Polyester, Double or King Size, Machine Washable

NOW

£ 11.99

£ 69.99

Teddy Bear Fleece Throw Blanket - Ultra-Soft Polyester, Double or King Size, Machine Washable

Ultra Soft Teddy Fleece: Snuggle up with plush, cosy comfort. Two Sizes: Choose double or king for the perfect fit. Versatile Use: Ideal for sofas, beds, or as a stylish accent. Machine Washable: Easy care design just pop in the wash at 30°C.
Save 83 %!
Ottoman Divan Bed with Linen Mattress & Storage - Single Grey

NOW

£ 97.49

£ 197.99

Ottoman Divan Bed with Linen Mattress & Storage - Single Grey

Comfort Mattress: Two layer sponge mattress (38kg/m³ + 25kg/m³) ensures restful sleep and solid support up to 120kg. No Assembly Needed: Delivered ready to use—simply unfold and enjoy instant comfort and convenience.

3 bought

Save 51 %!
Luxury Microfiber Duvet Set - Soft & Breathable, Single, Double or King

NOW

£ 10.99

£ 29.99

Luxury Microfiber Duvet Set - Soft & Breathable, Single, Double or King

Easy Maintenance: Chuck in the washing machine and simply hang out to dry! The wrinkle resistant material means that your bedding will look great without ironing.
Save 63 %!
King Size Metal Bed Frame with Rustic Wood Headboard & Under-Bed Storage - Heavy Duty, Noise-Free Platform

NOW

£ 100.00

£ 200.00

King Size Metal Bed Frame with Rustic Wood Headboard & Under-Bed Storage - Heavy Duty, Noise-Free Platform

Noise Free Design: Sleep soundly, no creaks or squeaks. Rustic Wood Headboard: Warm, inviting wood grain style. Sturdy Metal Frame: Rustproof and reliable for years of use. No Box Spring Needed: Supportive platform base.

1 bought

Save 50 %!
Luxury Cotton Quilted Patchwork Bedspread Set - Soft, Breathable & Machine Washable, Double or King Size, 12 Colours

NOW

£ 19.99

Luxury Cotton Quilted Patchwork Bedspread Set - Soft, Breathable & Machine Washable, Double or King Size, 12 Colours

Easy Care: Machine washable at 30°C and tumble dryer friendly for fuss free maintenance. Flexible Sizing: Available in double (£19.99) or king (£23.99) sizes to fit your bed perfectly.

3 bought

Faux Fur Human Pet Bed - 2 Sizes

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£ 58.99

£ 199.99

Faux Fur Human Pet Bed - 2 Sizes

Hypoallergenic Materials: Crafted to reduce allergens ideal for sensitive skin and allergy sufferers. Pressure Relief Rim: Raised edges filled with plush polyester ease stress and aid ergonomic rest.
Save 71 %!
Luxury Cotton Blend Bedspread - Classic, Breathable & Machine Washable - Single, Double, King Sizes

NOW

£ 21.47

£ 35.00

Luxury Cotton Blend Bedspread - Classic, Breathable & Machine Washable - Single, Double, King Sizes

Machine Washable: Easy care fabric simply wash at 30°C for fresh, fuss free maintenance. Lightweight Comfort: Adds warmth without bulk perfect for layering or standalone use.
Save 39 %!
Elegant Metal Bed Frame - Sturdy & Modern Design

NOW

£ 79.00

£ 116.99

Elegant Metal Bed Frame - Sturdy & Modern Design

Ample Storage. Offers generous under bed space to keep your room clutter free. Robust Construction. Built from high quality steel for long lasting durability. Stable Support. Thick metal legs provide excellent stability, supporting up to 150kg.
Save 32 %!
10cm Luxury EzySleep Bounce Mattress Topper - 5 Sizes

NOW

£ 24.99

£ 69.99

10cm Luxury EzySleep Bounce Mattress Topper - 5 Sizes

Sizes: Choose your durable topper from 5 sizes single, small single, double, king, or superking. Secure fit: Corner straps ensure the topper stays snugly in place.

89 bought

Save 64 %!
Soft Bamboo Mattress Topper - 4 Sizes & 2 Thickness Options

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£ 32.00

£ 89.99

Soft Bamboo Mattress Topper - 4 Sizes & 2 Thickness Options

Bamboo Extract: Made with hypoallergenic materials and bamboo extract, this mattress is extremely soft and kind to your skin.Secure: This topper features elasticated loops along the base of each corner that keep your topper attached to your topper.

29 bought

Save 64 %!
PRICE DROP! Shredded Memory Foam Mattress Topper - Hotel Quality, 5 Sizes, Removable Cover

NOW

£ 29.99

£ 69.99

PRICE DROP! Shredded Memory Foam Mattress Topper - Hotel Quality, 5 Sizes, Removable Cover

Breathable Microfibre Cover: Enjoy cool, comfortable nights with a soft, breathable microfibre layer. No Assembly Required: Simply unroll and place on your mattress ready to use in minutes.

4 bought

Save 57 %!
Grey 4-inch Microfibre Mattress Topper - 5 Sizes

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£ 24.99

£ 69.99

Grey 4-inch Microfibre Mattress Topper - 5 Sizes

Secure Fit: Designed to fit UK mattresses, this topper has been designed with elasticated straps that allow for a good grip of your mattress. Extremely Thick: This 4 inch grey mattress topper adds a layer of extra support, putting you to sleep even quicker.
Save 64 %!
PRICE DROP! Hotel Quality Dual Layer Memory Foam Mattress Topper - Hypoallergenic, Breathable, 5 Sizes

NOW

£ 50.99

£ 80.00

PRICE DROP! Hotel Quality Dual Layer Memory Foam Mattress Topper - Hypoallergenic, Breathable, 5 Sizes

Dual layer comfort: Enjoy a thick, supportive topper with two layers for enhanced pressure relief and softness. Breathable design: Helps regulate temperature for a cooler night's sleep.
Save 36 %!
Cartoon Inspired ce Duvet Cover Set - Soft Polyester, Machine Washable, 12 Styles, Single/Double/King

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£ 14.99

£ 39.99

Cartoon Inspired ce Duvet Cover Set - Soft Polyester, Machine Washable, 12 Styles, Single/Double/King

Complete Set: Includes duvet cover and two pillowcases for a coordinated look. Vibrant Choices: Select from 12 bold Minecraft inspired designs to suit any fan's style.
Save 63 %!
Memory Foam Extra Deep Spring Mattress In Six Sizes

NOW

£ 52.00

£ 99.00

Memory Foam Extra Deep Spring Mattress In Six Sizes

Features: This mattress is also easy to care for and does not have handles. Speedy Delivery: Redeem this deal by midday and receive your order within 48 hours!

59 bought

Save 47 %!
Luxury Teddy Fleece Jumbo Corded Duvet Cover & Pillow Set - Ultra-Soft, Machine Washable, Modern Ribbed Bedding in Single, Double, King & Super King

NOW

£ 19.99

£ 34.99

Luxury Teddy Fleece Jumbo Corded Duvet Cover & Pillow Set - Ultra-Soft, Machine Washable, Modern Ribbed Bedding in Single, Double, King & Super King

Flexible Sizing: Fits single, double, king, or super king beds—choose your perfect match. Machine Washable: Easy care bedding—just pop it in the washing machine to refresh.
Save 43 %!
Memory Foam Tufted Mattress - Pressure Relief & Support in 5 Sizes

NOW

£ 49.00

£ 170.00

Memory Foam Tufted Mattress - Pressure Relief & Support in 5 Sizes

Body Conforming Memory Foam: Moulds to your body shape for tailored comfort and support. Enhanced Support: 13.5 gauge Bonnell open coil spring unit delivers reliable back and spinal alignment.
Save 71 %!
Men's Mystery Football Shirt

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£ 24.00

£ 34.99

Men's Mystery Football Shirt

250 bought

Save 31 %!
Hybrid Memory Foam Mattress with Cooltouch+ - Pressure Relief & Support - Multiple Sizes

NOW

£ 43.99

£ 119.99

Hybrid Memory Foam Mattress with Cooltouch+ - Pressure Relief & Support - Multiple Sizes

Multiple Sizes: Available in a range of sizes to suit any bedroom. Custom Style: Choose from seven border colours to match your bedroom decor.
Save 63 %!
Hybrid Memory Foam Mattress with Cooling Cover - Medium Soft, Multiple Sizes

NOW

£ 43.99

£ 119.99

Hybrid Memory Foam Mattress with Cooling Cover - Medium Soft, Multiple Sizes

Safety Certified: Meets BS7177:2008 (Low Hazard) fire safety standards for added peace of mind. Hybrid Comfort: Combines coil springs and high density memory foam for balanced support and plush comfort.
Save 63 %!
Ultra Cool Blue Memory Foam Hybrid Mattress in 7 Sizes

NOW

£ 49.00

£ 159.00

Ultra Cool Blue Memory Foam Hybrid Mattress in 7 Sizes

Comfort revolution: The Ultra Cool Blue Memory Foam Hybrid Mattress redefines luxury with advanced technology and plush comfort. Chill and thrill: Revel in the refreshing embrace of the mattress' 13.5 open coil Bonnell spring system, delivering optimal support and a cool night's sleep.
Save 69 %!

Explore king size mattresses in the UK with confidence, discovering a wide range of sizes, materials, and price points. Whether you’re shopping memory foam king size mattresses, pocket sprung king size mattresses, or hybrid options, Wowcher UK brings you curated deals from trusted brands. Look for memory foam king size mattress UK, orthopedic king size mattress UK, hypoallergenic king size mattresses, and luxury king size beds with generous durability. With UK delivery networks, you’ll benefit from fast shipping, free delivery promotions, and easy returns on qualifying deals.


From UK-wide stock on standard king size mattresses to next-day delivery on top-rated options, you’ll find the right balance of comfort, support, and price. Search terms like king size bed mattress UK, king size bed with memory foam, and super king vs king size comparisons help you refine choices. Whether you want a firm orthopaedic feel or a plush top layer, there are options that suit side sleepers, back sleepers, and couples sharing a bed in the UK.


Unbeatable Deals on King Size Mattresses in the UK


Shop king size mattresses in the UK with confidence, filtering by brand, fill type such as memory foam, latex, or hybrid, and by firmness from extra soft to extra firm. Find UK king size mattress deals, free delivery promotions, and regional discounts that help you save on a larger size bed. Whether you’re buying a knob-and-rail style frame or a bed-in-a-box king size, we highlight the best value for your room and budget.


Compare king size bed mattress UK options for pressure relief, edge support, and temperature regulation. Many listings feature memory foam king size layers for contouring comfort, while others emphasize pocket sprung construction for responsive support. If a moisture-wicking cover or anti-allergen materials matter, filter for hypoallergenic king size mattresses to narrow the field.


Delivery and setup can be part of your savings too. Look for free delivery on king size mattresses, packaging removal deals, and flexible click-and-collect options in your area. Whether you’re upgrading a master bedroom or outfitting a guest suite, these deals make a king size bed feel within reach.


Frequently Asked Questions

What size is considered a king size mattress in the UK?


In the UK, a standard king size mattress measures approximately 150 cm by 200 cm (60 inches by 80 inches). A super king size mattress is larger at about 180 cm by 200 cm (72 inches by 80 inches). When shopping, check exact dimensions on listings to ensure your bed frame accommodates the mattress comfortably.


What are the best materials for a king size mattress in the UK?


Memory foam king size mattresses offer excellent pressure relief and motion isolation, ideal for couples. Hybrid king sizes combine springs with foam for a balanced feel. Pocket sprung options provide targeted support and durability, while latex models deliver buoyant support and cooling. Consider your preferred sleep position, temperature control, and any allergies when choosing materials.


How do I choose the right firmness for a king size mattress?


Side sleepers often prefer medium to medium-soft for pressure relief at the shoulders and hips, while back sleepers may opt for medium-firm for better spinal alignment. Stomach sleepers generally benefit from a firmer feel. If you share the bed, consider a mattress with good edge support and zoned coils or foam layers to minimize motion transfer and maximize usable surface area.


Do king size mattresses in the UK come with free delivery or discounts?


Many Wowcher UK listings offer free delivery on qualifying king size mattresses or discounted shipping with promotional codes. Always check the terms at checkout, including minimum spend, regional exclusions, and whether the deal includes setup, removal of old bedding, or packaging disposal. Free delivery can significantly reduce total cost, especially for large items.


What should I look for when comparing king size mattress deals?


Compare price per square metre, cover materials, and trial periods. Look for a generous sleep trial and a solid warranty. Check the return policy and ensure there is a clear path for exchanges if firmness or size isn’t right. Also consider the frame compatibility, ventilation, and whether a topper is included or available as an add-on.


How do I arrange delivery for a king size mattress?


Most Wowcher listings provide a delivery window and tracking once dispatched. For large items like king size mattresses, you may select standard delivery, express options, or next-day services where available. Some deals include white-glove delivery and setup. Be sure to confirm delivery accessibility for staircases, entrances, or elevator access at checkout.


Are there eco-friendly or hypoallergenic king size mattress options in the UK?


Yes. Look for hypoallergenic covers, natural latex or sustainably sourced materials, and certifications like Oeko-Tex or CertiPUR. Hypoallergenic king size mattresses reduce allergens and dust mites, which can benefit allergy sufferers. Check for washable covers and easy-care instructions to maintain a fresh sleeping environment.


What are common maintenance tips for king size mattresses?


Rotate or flip your mattress if the design allows it, at least every three months to promote even wear. Use a breathable mattress protector to guard against spills and stains. Vacuum the surface occasionally to reduce dust buildup. Follow manufacturer guidelines for cleaning and warranty care, and replace the mattress when support or comfort deteriorates beyond a reasonable threshold.


How can I find the best king size mattress deals in the UK on Wowcher?


Use filters for size (king or super king), material type, firmness, and price range. Watch for limited-time flash deals, seasonal promotions, and new-brand introductions. Add items to your cart to see final checkout prices with delivery included, compare multiple listings side by side, and read customer reviews to gauge real-world comfort and durability.