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… 00dd 00hh 00mm 00ss
NOW ON

Firm King Size Mattresses

Showing 25 to 36 of 144 Products
FILTER

Filter By

Filter By

View Products (144)
Hypnos Ortho Silver King Size Mattress

HYPNOS Ortho Silver King Size Mattress

Review Stars
5/5
(2 Reviews)
£1,069Save £290RRP £1,359Was £1,189
From £356.34 per month
From £26.85 per month
  • Natural Fibre Filling
  • ReActive 7 Pocket Spring
  • 10 Year Guarantee
Firm
Extra Firm
Removal and Recycle Available
FREE Delivery within 7 Weeks
Hypnos Baroness King Size Mattress

HYPNOS Baroness King Size Mattress

£1,069Save £330RRP £1,399Was £1,199
From £356.34 per month
From £26.85 per month
  • Natural Fibre Filling
  • ReActive 6 Pocket Spring
  • 10 Year Guarantee
Firm
Extra Firm
Removal and Recycle Available
FREE Delivery within 7 Weeks
Hypnos Viceroy King Size Mattress

HYPNOS Viceroy King Size Mattress

Review Stars
5/5
(2 Reviews)
£1,459Save £530RRP £1,989Was £1,629
From £486.34 per month
From £36.65 per month
  • Natural Fibre Filling
  • ReActive 8 Pocket Spring
  • 10 Year Guarantee
Firm
Extra Firm
Removal and Recycle Available
FREE Delivery within 7 Weeks
Mattress-Trial-200-Nights-sized
Emma Diamond Firm King Size Mattress

EMMA Diamond Firm King Size Mattress

Review Stars
4.8/5
(9 Reviews)
£749Save £870RRP £1,619Was £1,299
From £249.67 per month
From £30.12 per month
  • Memory Foam Filling
  • 10 Year Guarantee
Firm
FREE Delivery in 14 Days
mattress-trial-40-nights
Tempur Pro SmartCool Firm King Size Mattress

TEMPUR Pro SmartCool Firm King Size Mattress

£1,899Save £1,550RRP £3,449Was £2,789
From £633.0 per month
From £51.97 per month
  • Memory Foam Filling
  • 10 Year Guarantee
Firm
Removal and Recycle Available
FREE Delivery in 4 to 5 Weeks
mattress-trial-40-nights
Tempur Pro Plus SmartCool Firm King Size Mattress

TEMPUR Pro Plus SmartCool Firm King Size Mattress

£2,299Save £1,750RRP £4,049Was £3,299
From £61.02 per month
  • Memory Foam Filling
  • 10 Year Guarantee
Firm
Removal and Recycle Available
FREE Delivery in 3 to 4 Weeks
mattress-trial-40-nights
Tempur Pro Luxe SmartCool Firm King Size Mattress

TEMPUR Pro Luxe SmartCool Firm King Size Mattress

£2,799Save £2,150RRP £4,949Was £4,049
From £74.58 per month
  • Memory Foam Filling
  • 10 Year Guarantee
Firm
Removal and Recycle Available
FREE Delivery in 4 to 5 Weeks
Awards-Special-Buy
NBF Awards_Bed Manufacturer_Winner_F_D
Harrison Spinks Loop Wool King Size Mattress

HARRISON SPINKS Loop Wool King Size Mattress

Review Stars
5/5
(5 Reviews)
£1,149Save £540RRP £1,689Was £1,279
From £383.00 per month
From £28.86 per month
  • Natural Fibre Filling
  • 6750 Pocket Spring
  • 10 Year Warranty
  • Free Harrison Spinks Box Pillow Pair - RRP £118
Firm
Removal and Recycle Available
FREE Delivery in 14 Days
NBF Awards_Bed Manufacturer_Winner_F_D
Harrison Spinks Crystal 8250 King Size Mattress

HARRISON SPINKS Crystal 8250 King Size Mattress

Review Stars
5/5
(5 Reviews)
£1,489Save £550RRP £2,039Was £1,659
From £496.34 per month
From £37.40 per month
  • Natural Fibre Filling
  • 8250 Pocket Spring
  • 10 Year Warranty
  • Free Harrison Spinks Box Pillow Pair - RRP £118
Soft
Medium
Firm
Removal and Recycle Available
FREE Delivery in 5 to 6 Weeks
NBF Awards_Bed Manufacturer_Winner_F_D
Harrison Spinks Aphrodite 14000 King Size Mattress

HARRISON SPINKS Aphrodite 14000 King Size Mattress

Review Stars
5/5
(10 Reviews)
£1,899Save £790RRP £2,689Was £2,099
From £633.00 per month
From £47.70 per month
  • Natural Fibre Filling
  • 14000 Pocket Spring
  • 10 Year Warranty
  • Free Harrison Spinks Box Pillow Pair - RRP £118
Soft
Medium
Firm
Removal and Recycle Available
FREE Delivery in 5 to 6 Weeks
Breasley Uno Essential Ortho King Size Mattress

BREASLEY Uno Essential Ortho King Size Mattress

Review Stars
5/5
(4 Reviews)
£289Save £110RRP £399Was £329
From £96.34 per month
From £7.26 per month
  • Foam
  • 5 Year Guarantee
Firm
FREE Delivery in 5 to 7 Days
Good_Housekeeping_320x Logo
Nectar Hybrid Plus King Size Mattress

NECTAR Hybrid Plus King Size Mattress

Review Stars
5/5
(1 Reviews)
£749Save £600RRP £1,349Was £899
From £249.67 per month
From £20.07 per month
  • Memory Foam Filling
  • Pocket Spring
  • 10 Year Guarantee
Firm
FREE Delivery in 14 Days
Show more
Showing 25 to 36 of 144 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