Clear
Close

Trending searches

Speak to a bed expert:
01928 242829
Price drop sale banner Man eye mask Woman yawning
Ends in… 0ddays 00hhours 00mmins 00ssecs

Extra Firm King Size Mattresses

Showing 13 to 24 of 35 Products
Filter

Filter By

Filter By

View Products (35)
Relyon Ultra Firm Serenity King Size Mattress

Relyon Ultra Firm Serenity King Size Mattress

Relyon
Review Stars
5/5
(1 Reviews)
£1,039
Save £610
RRP £1,649
Was £1,149
From
£36.79
per month
Extra Firm
  • Natural Fibre Filling
  • 2530 Pocket Spring
  • 10 Year Guarantee
FREE Delivery in 5 to 6 Weeks
new-sized
Harrington & Co Splendour Ortho King Size Mattress

Harrington & Co Splendour Ortho King Size Mattress

Harrington & Co
£969
Save £480
RRP £1,449
From
£31.03
per month
Extra Firm
  • Natural Fibre Filling
  • 3000 Pocket Spring
  • 5 Year Guarantee
FREE Delivery in 7 to 10 Days
Vispring Herald Superb King Size Mattress

Vispring Herald Superb King Size Mattress

Vispring
Review Stars
4/5
(1 Reviews)
£3,899
Save £1,001
RRP £4,900
From
£124.85
per month
Soft
Medium
Firm
Extra Firm
  • Natural Fibre Filling
  • 1476 Pocket Spring
  • 30 Year Guarantee
  • Free Vispring Mattress Protector - RRP From £269
FREE Delivery in 2 to 3 Weeks
Vispring Bedstead Traditional King Size Mattress

Vispring Bedstead Traditional King Size Mattress

Vispring
Review Stars
4.5/5
(4 Reviews)
£2,049
Save £516
RRP £2,565
From
£65.61
per month
Soft
Medium
Firm
Extra Firm
  • Natural Fibre Filling
  • 1254 Pocket Spring
  • 30 Year Guarantee
  • Free Vispring Mattress Protector - RRP From £269
FREE Delivery in 2 to 3 Weeks
Relyon Hartford Ortho King Size Mattress

Relyon Hartford Ortho King Size Mattress

Relyon
£779
Save £400
RRP £1,179
Was £849
From
£27.19
per month
Extra Firm
  • Natural Fibre Filling
  • 1089 Pocket Spring
  • 10 Year Guarantee
FREE Delivery in 5 to 6 Weeks
Vispring Bedstead Realm King Size Mattress

Vispring Bedstead Realm King Size Mattress

Vispring
Review Stars
5/5
(1 Reviews)
£2,769
Save £691
RRP £3,460
From
£88.67
per month
Soft
Medium
Firm
Extra Firm
  • Natural Fibre Filling
  • 1326 Pocket Spring
  • 30 Year Guarantee
  • Free Vispring Mattress Protector - RRP From £269
FREE Delivery in 2 to 3 Weeks
Vispring Devonshire King Size Mattress

Vispring Devonshire King Size Mattress

Vispring
Review Stars
5/5
(3 Reviews)
£3,229
Save £811
RRP £4,040
From
£103.40
per month
Soft
Medium
Firm
Extra Firm
  • Natural Fibre Filling
  • 1326 Pocket Spring
  • 30 Year Guarantee
  • Free Vispring Mattress Protector - RRP From £269
FREE Delivery in 2 to 3 Weeks
Highgrove Beds Blyth Ortho King Size Mattress

Highgrove Beds Blyth Ortho King Size Mattress

Highgrove Beds
£779
Save £200
RRP £979
From
£24.95
per month
Extra Firm
  • Natural Fibre Filling
  • 2000 Pocket Spring
  • 5 Year Warranty
FREE Delivery in 14 Days
Hypnos Legacy I King Size Mattress

Hypnos Legacy I King Size Mattress

Hypnos
Review Stars
5/5
(1 Reviews)
£1,559
Save £640
RRP £2,199
From
£49.92
per month
Medium
Firm
Extra Firm
  • Natural Fibre Filling
  • ReActivePro 6 Pocket Spring
  • 10 Year Guarantee
FREE Delivery in 4 to 5 Weeks
Hypnos Legacy V King Size Mattress

Hypnos Legacy V King Size Mattress

Hypnos
£2,799
Save £1,200
RRP £3,999
From
£89.63
per month
Medium
Firm
Extra Firm
  • Natural Fibre Filling
  • ReActivePro 10 Pocket Spring
  • 10 Year Guarantee
FREE Delivery in 4 to 5 Weeks
Sleepeezee Backcare Ultimate 2000 King Size Mattress

Sleepeezee Backcare Ultimate 2000 King Size Mattress

Sleepeezee
Review Stars
5/5
(1 Reviews)
£849
Save £530
RRP £1,379
Was £999
From
£31.99
per month
Extra Firm
  • Natural Fibre Filling
  • 2000 Pocket Spring
  • 10 Year Guarantee
FREE Delivery in 14 Days
Vispring Bedstead Supreme King Size Mattress

Vispring Bedstead Supreme King Size Mattress

Vispring
Review Stars
5/5
(2 Reviews)
£4,139
Save £1,031
RRP £5,170
From
£132.54
per month
Soft
Medium
Firm
Extra Firm
  • Natural Fibre Filling
  • 1476 Pocket Spring
  • 30 Year Guarantee
  • Free Vispring Mattress Protector - RRP From £269
FREE Delivery in 2 to 3 Weeks
Show more
Showing 13 to 24 of 35 Products

Get in the know with our buying guides

View all
Happy woman sat on bed
How to Choose the Right Mattress
Find the right mattress for your needs with our ultimate guide
Person putting on mattress protector
Ultimate Guide to the Best Mattress Protector
Choosing the right mattress protector for your bed
Man sleeping in facemask
Choosing the Right Pillow for You
Ensure you have the right pillow to enhance your sleep
Boy sitting under a duvet
Ultimate Guide to Picking the Best Duvet
Don't feel overwhelmed, let us help you choose