L
Close
Clear

Trending searches

Speak to a bed expert:
01928 242829
Back
Free UK Delivery Rated Excellent UK's Leading Independent Bed Retailer Pay by Finance Buy Now, Pay Later
Price Drop Sale
Up to 50% Off
Ends in… 3dd 14hh 40mm 53ss

Extra Firm King Size Mattresses

Showing 1 to 12 of 45 Products
FILTER

Filter By

Filter By

View Products (45)
Awards-Best-Seller
Mattress-Trial-100-Nights-sized
Sealy Caldwell King Size Mattress

SEALY Caldwell King Size Mattress

4.8/5
(16 reviews)
£465Save £314RRP £779Was £549
From £155.0 per month
From £12.28 per month
  • PostureTech™ Core Support Spring
  • 5 Year Guarantee
Extra Firm
Removal and Recycle Available
FREE Delivery in 3 to 4 Weeks
Awards-Expert-Choice
Relyon Natural Pocket Ortho Intense King Size Mattress

RELYON Natural Pocket Ortho Intense King Size Mattress

4.8/5
(37 reviews)
£969Save £310RRP £1,279Was £1,079
From £323.00 per month
From £24.34 per month
  • Natural Filling
  • 1500 Pocket Spring
  • 10 Year Guarantee
Extra Firm
Removal and Recycle Available
FREE Delivery within 5 Weeks
Awards-Best-Seller
Vispring Elite King Size Mattress

VISPRING Elite King Size Mattress

4.9/5
(18 reviews)
£1,359Save £691RRP £2,050Was £1,749
From £453.0 per month
From £41.17 per month
  • Natural Filling
  • 1254 Pocket Spring
  • 30 Year Guarantee
Soft
Medium
Firm
Extra Firm
Removal and Recycle Available
FREE Delivery in 4 to 5 Weeks
Awards-Special-Buy
Hypnos Ortho Revive King Size Mattress

HYPNOS Ortho Revive King Size Mattress

4.9/5
(6 reviews)
£779Save £200RRP £979Was £829
From £259.67 per month
From £19.57 per month
  • Natural Filling
  • ReActive 6 Pocket Spring
  • 10 Year Guarantee
Extra Firm
Removal and Recycle Available
FREE Delivery within 5 Weeks
Awards-Special-Buy
Vispring Baronet Superb King Size Mattress

VISPRING Baronet Superb King Size Mattress

4.9/5
(4 reviews)
£1,914Save £931RRP £2,845Was £2,449
From £638.0 per month
From £57.25 per month
  • Natural Filling
  • 1326 Pocket Spring
  • 30 Year Guarantee
Soft
Medium
Firm
Extra Firm
Removal and Recycle Available
FREE Delivery in 4 to 5 Weeks
Hypnos Ortho Bronze King Size Mattress

HYPNOS Ortho Bronze King Size Mattress

4.9/5
(7 reviews)
£789Save £410RRP £1,199Was £919
From £263.0 per month
From £21.83 per month
  • Natural Filling
  • ReActive 6 Pocket Spring
  • 10 Year Guarantee
Firm
Extra Firm
Removal and Recycle Available
FREE Delivery within 5 Weeks
Hypnos Baroness King Size Mattress

HYPNOS Baroness King Size Mattress

£849Save £500RRP £1,349Was £1,029
From £283.0 per month
From £24.59 per month
  • Natural Filling
  • ReActive 6 Pocket Spring
  • 10 Year Guarantee
Firm
Extra Firm
Removal and Recycle Available
FREE Delivery within 5 Weeks
Hypnos Ortho Silver King Size Mattress

HYPNOS Ortho Silver King Size Mattress

5.0/5
(2 reviews)
£879Save £480RRP £1,359Was £1,089
From £293.0 per month
From £24.59 per month
  • Natural Filling
  • ReActive 7 Pocket Spring
  • 10 Year Guarantee
Firm
Extra Firm
Removal and Recycle Available
FREE Delivery within 5 Weeks
Hypnos Viceroy King Size Mattress

HYPNOS Viceroy King Size Mattress

5.0/5
(2 reviews)
£1,189Save £710RRP £1,899Was £1,379
From £396.34 per month
From £33.38 per month
  • Natural Filling
  • ReActive 8 Pocket Spring
  • 10 Year Guarantee
Firm
Extra Firm
Removal and Recycle Available
FREE Delivery within 5 Weeks
Highgrove Beds Blyth Ortho King Size Mattress

HIGHGROVE BEDS Blyth Ortho King Size Mattress

£679Save £200RRP £879Was £729
From £226.34 per month
From £17.06 per month
  • Natural Filling
  • 2000 Pocket Spring
  • 5 Year Warranty
Extra Firm
Removal and Recycle Available
FREE Delivery in 14 Days
Mattress-Trial-60-Nights-sized
Airsprung Eco Ortholux King Size Mattress

AIRSPRUNG Eco Ortholux King Size Mattress

5.0/5
(2 reviews)
£529Save £190RRP £719Was £589
From £176.34 per month
From £13.29 per month
  • Eco Fibre Filling
  • 1287 Pocket Spring
  • 1 Year Guarantee
Extra Firm
FREE Delivery in 5 to 7 Days
Silentnight Apollo King Size Mattress

SILENTNIGHT Apollo King Size Mattress

4.5/5
(1 reviews)
£469Save £120RRP £589Was £519
From £156.34 per month
From £11.78 per month
  • Eco Fibre Filling
  • Miracoil Springs
  • 5 Year Guarantee
Extra Firm
Removal and Recycle Available
FREE Delivery in 14 Days
Show more
Showing 1 to 12 of 45 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