L
Close
Clear

Trending searches

Back
Free UK Delivery Rated Excellent UK's Leading Independent Bed Retailer Pay by Finance Buy Now, Pay Later
Bank Holiday Sale
Up to 50% Off
Ends in… 3dd 14hh 40mm 53ss

Sealy King Size Mattresses

Showing (1 to 24) of 28 Products
FILTER

Filter By

Filter By

View Products (28)
Mattress-Trial-100-Nights-sized
Sealy Holbrook King Size Mattress

SEALYHolbrook King Size Mattress

5.0/5
(1 reviews)
£874Save £475RRP £1,349Was £1,099
From £291.34 per month
From £31.99 per month
  • Latex Filling
  • 800 Pocket Spring
  • 5 Year Guarantee
Medium
Removal and Recycle Available
FREE Delivery in 14 Days
Awards-Best-Seller
Mattress-Trial-100-Nights-sized
Sealy Caldwell King Size Mattress

SEALYCaldwell King Size Mattress

4.8/5
(15 reviews)
£428Save £351RRP £779Was £549
From £142.67 per month
From £15.66 per month
  • PostureTech™ Core Support Spring
  • 5 Year Guarantee
  • Free Size Upgrade
Extra Firm
Removal and Recycle Available
FREE Delivery in 14 Days
Mattress-Trial-100-Nights-sized
Sealy Amherst King Size Mattress

SEALYAmherst King Size Mattress

£787Save £412RRP £1,199Was £999
From £262.34 per month
From £28.79 per month
  • Gel Filling
  • 800 Pocket Spring
  • 5 Year Guarantee
Firm
Removal and Recycle Available
FREE Delivery in 14 Days
Mattress-Trial-100-Nights-sized
Sealy Richfield King Size Mattress

SEALYRichfield King Size Mattress

5.0/5
(1 reviews)
£944Save £515RRP £1,459Was £1,199
From £314.67 per month
From £34.55 per month
  • Memory Foam Filling
  • 1800 Pocket Spring
  • 5 Year Guarantee
Medium Firm
Removal and Recycle Available
FREE Delivery in 14 Days
Mattress-Trial-100-Nights-sized
Sealy Davenport King Size Mattress

SEALYDavenport King Size Mattress

£962Save £537RRP £1,499Was £1,229
From £320.67 per month
From £35.19 per month
  • Memory Foam Filling
  • 1400 Pocket Spring
  • 5 Year Guarantee
Medium
Removal and Recycle Available
FREE Delivery in 14 Days
Mattress-Trial-100-Nights-sized
Sealy Belgravia King Size Mattress

SEALYBelgravia King Size Mattress

£1,014Save £565RRP £1,579Was £1,289
From £338.0 per month
From £37.11 per month
  • Memory Foam Filling
  • 1800 Pocket Spring
  • 5 Year Guarantee
Medium
Removal and Recycle Available
FREE Delivery in 14 Days
Mattress-Trial-100-Nights-sized
Sealy Knightsbridge King Size Mattress

SEALYKnightsbridge King Size Mattress

£1,110Save £629RRP £1,739Was £1,399
From £370.0 per month
From £40.64 per month
  • Memory Foam Filling
  • 2400 Pocket Spring
  • 5 Year Guarantee
Medium Firm
Removal and Recycle Available
FREE Delivery in 14 Days
Awards-Great-Value
Mattress-Trial-100-Nights-sized
Sealy Hambleton King Size Mattress

SEALYHambleton King Size Mattress

4.8/5
(7 reviews)
£577Save £412RRP £989Was £729
From £192.34 per month
From £21.10 per month
  • Memory Foam Filling
  • PostureTech™ Core Support Spring
  • 5 Year Guarantee
  • Free Size Upgrade
Medium Firm
Removal and Recycle Available
FREE Delivery in 14 Days
Awards-Special-Buy
Mattress-Trial-100-Nights-sized
Sealy Turville King Size Mattress

SEALYTurville King Size Mattress

5.0/5
(1 reviews)
£612Save £467RRP £1,079Was £779
From £204.0 per month
From £22.38 per month
  • Latex Filling
  • PostureTech™ Core Support Spring
  • 5 Year Guarantee
  • Free Size Upgrade
Medium
Removal and Recycle Available
FREE Delivery in 14 Days
Mattress-Trial-100-Nights-sized
Sealy Lakeside King Size Mattress

SEALYLakeside King Size Mattress

£669Save £490RRP £1,159Was £859
From £223.0 per month
From £24.62 per month
  • Gel Filling
  • PostureTech™ Core Support Spring
  • 5 Year Guarantee
  • Free Size Upgrade
Soft Medium
Removal and Recycle Available
FREE Delivery in 14 Days
Mattress-Trial-100-Nights-sized
Sealy Memory Deluxe Ortho King Size Mattress

SEALYMemory Deluxe Ortho King Size Mattress

£752Save £327RRP £1,079Was £959
From £250.67 per month
From £27.51 per month
  • Memory Foam Filling
  • PostureTech™ Core Support Spring
  • 5 Year Guarantee
Medium Firm
Removal and Recycle Available
FREE Delivery in 14 Days
Mattress-Trial-100-Nights-sized
Sealy Helmsley King Size Mattress

SEALYHelmsley King Size Mattress

5.0/5
(3 reviews)
£857Save £612RRP £1,469Was £1,089
From £285.67 per month
From £31.35 per month
  • Gel Filling
  • 1000 Pocket Spring
  • 5 Year Guarantee
  • Free Size Upgrade
Medium
Removal and Recycle Available
FREE Delivery in 14 Days
Awards-Special-Buy
Mattress-Trial-100-Nights-sized
Sealy Essential Support King Size Mattress

SEALYEssential Support King Size Mattress

5.0/5
(3 reviews)
£384Save £215RRP £599Was £489
From £128.0 per month
From £14.06 per month
  • PostureTech™ Core Support Spring
  • 5 Year Guarantee
  • Free Size Upgrade
Firm
Removal and Recycle Available
FREE Delivery in 14 Days
Mattress-Trial-100-Nights-sized
Sealy Middleton King Size Mattress

SEALYMiddleton King Size Mattress

5.0/5
(6 reviews)
£499Save £360RRP £859Was £649
From £166.34 per month
From £18.54 per month
  • Natural Filling
  • PostureTech™ Core Support Spring
  • 5 Year Guarantee
  • Free Size Upgrade
Medium
Removal and Recycle Available
FREE Delivery in 14 Days
Mattress-Trial-100-Nights-sized
Sealy Dreamworld Ortho Plus Memory King Size Mattress

SEALYDreamworld Ortho Plus Memory King Size Mattress

5.0/5
(3 reviews)
£498Save £351RRP £849Was £629
From £166.0 per month
From £18.22 per month
  • Memory Foam Filling
  • PostureTech™ Core Support Spring
  • 5 Year Guarantee
  • Free Size Upgrade
Medium Firm
Removal and Recycle Available
FREE Delivery in 14 Days
GHK-2024
Sealy Webber King Size Mattress

SEALYWebber King Size Mattress

£1,399Save £820RRP £2,219Was £1,779
From £466.34 per month
From £51.20 per month
  • Foam Filling
  • Posturepedic AlignSupport™ Coil
  • 7 Year Guarantee
Medium Firm
Removal and Recycle Available
FREE Delivery in 14 Days
GHK-2024
Sealy Arden King Size Mattress

SEALYArden King Size Mattress

£1,574Save £945RRP £2,519Was £1,999
From £524.67 per month
From £57.61 per month
  • Foam Filling
  • Posturepedic AlignSupport™ Coil
  • 7 Year Guarantee
Soft Medium
Removal and Recycle Available
FREE Delivery in 14 Days
Mattress-Trial-100-Nights-sized
Sealy Fleetwith King Size Mattress

SEALYFleetwith King Size Mattress

5.0/5
(2 reviews)
£437Save £342RRP £779Was £559
From £145.67 per month
From £15.98 per month
  • PostureTech™ Core Support Spring
  • 5 Year Guarantee
  • Free Size Upgrade
Extra Firm
Removal and Recycle Available
FREE Delivery in 14 Days
Mattress-Trial-100-Nights-sized
Sealy Birkby King Size Mattress

SEALYBirkby King Size Mattress

4.5/5
(1 reviews)
£585Save £404RRP £989Was £749
From £195.0 per month
From £21.42 per month
  • Memory Foam Filling
  • PostureTech™ Core Support Spring
  • 5 Year Guarantee
  • Free Size Upgrade
Medium Firm
Removal and Recycle Available
FREE Delivery in 14 Days
Mattress-Trial-100-Nights-sized
Sealy Grandwood King Size Mattress

SEALYGrandwood King Size Mattress

£638Save £441RRP £1,079Was £799
From £212.67 per month
From £23.34 per month
  • Latex Filling
  • PostureTech™ Core Support Spring
  • 5 Year Guarantee
  • Free Size Upgrade
Medium
Removal and Recycle Available
FREE Delivery in 14 Days
Mattress-Trial-100-Nights-sized
Sealy Lexington King Size Mattress

SEALYLexington King Size Mattress

£682Save £477RRP £1,159Was £869
From £227.34 per month
From £24.95 per month
  • Gel Filling
  • PostureTech™ Core Support Spring
  • 5 Year Guarantee
  • Free Size Upgrade
Soft Medium
Removal and Recycle Available
FREE Delivery in 14 Days
Mattress-Trial-100-Nights-sized
Sealy Waterford King Size Mattress

SEALYWaterford King Size Mattress

£760Save £529RRP £1,289Was £969
From £253.34 per month
From £27.83 per month
  • Gel Filling
  • 1000 Pocket Spring
  • 5 Year Guarantee
  • Free Size Upgrade
Medium
Removal and Recycle Available
FREE Delivery in 14 Days
Mattress-Trial-100-Nights-sized
Sealy Addison King Size Mattress

SEALYAddison King Size Mattress

£865Save £604RRP £1,469Was £1,099
From £288.34 per month
From £31.67 per month
  • Gel Filling
  • 1000 Pocket Spring
  • 5 Year Guarantee
  • Free Size Upgrade
Soft Medium
Removal and Recycle Available
FREE Delivery in 14 Days
Awards-Special-Buy
Posturepedic
Sealy Blackwood King Size Mattress

SEALYBlackwood King Size Mattress

5.0/5
(2 reviews)
£1,049Save £600RRP £1,649Was £1,339
From £349.67 per month
From £38.39 per month
  • Foam Filling
  • Posturepedic AlignSupport™ Coil
  • 7 Year Guarantee
Firm
Removal and Recycle Available
FREE Delivery in 14 Days
Showing 1 to 24 of 28 Products

Get in the know with our buying guides

How to Choose the Right Mattress
Find the right mattress for your needs with our ultimate guide
Ultimate Guide to the Best Mattress Protector
Choosing the right mattress protector for your bed
Choosing the Right Pillow for You
Ensure you have the right pillow to enhance your sleep
Ultimate Guide to Picking the Best Duvet
Don't feel overwhelmed, let us help you choose