January Sale Extended
Up to 50% off
Ends in… 00dd 00hh 00mm 00ss
HURRY, ENDS SOON

Firm King Size Mattresses

Showing 1 to 12 of 163 Products
FILTER

Filter By

Filter By

new-sized
Hypnos Dynasty King Size Mattress

HYPNOS Dynasty King Size Mattress

£1,199Save £470RRP £1,669Was £1,449
From £399.67 per month
From £32.63 per month
  • Natural Fibre Filling
  • ReActivePro 6 Pocket Spring
  • 10 Year Guarantee
Medium
Firm
Removal and Recycle Available
FREE Delivery in 6 to 7 Weeks
Awards-Expert-Choice
Mattress-Trial-60-Nights-sized
Hypnos Ortho Gold King Size Mattress

HYPNOS Ortho Gold King Size Mattress

Review Stars
5/5
(20 Reviews)
£999Save £650RRP £1,649Was £1,359
From £333.00 per month
From £25.09 per month
  • Natural Fibre Filling
  • ReActive 8 Pocket Spring
  • 10 Year Guarantee
Firm
Removal and Recycle Available
FREE Delivery in 7 Days
Awards-Best-Seller
NBF Awards_Bed Manufacturer_Winner_F_D
Harrison Spinks Opal 7250 King Size Mattress

HARRISON SPINKS Opal 7250 King Size Mattress

Review Stars
4.9/5
(17 Reviews)
£1,039Save £470RRP £1,509Was £1,229
From £346.34 per month
From £27.61 per month
  • Natural Fibre Filling
  • 7250 Pocket Spring
  • 10 Year Warranty
Soft
Medium
Firm
Removal and Recycle Available
FREE Delivery in 5 to 6 Weeks
Awards-Highly-Rated
Hypnos Luxor Comfort Supreme King Size Mattress

HYPNOS Luxor Comfort Supreme King Size Mattress

Review Stars
4.9/5
(74 Reviews)
£1,199Save £490RRP £1,689Was £1,539
From £399.67 per month
From £34.64 per month
  • Natural Fibre Filling
  • ReActive 6 Pocket Spring
  • 10 Year Guarantee
Medium
Firm
Removal and Recycle Available
FREE Delivery in 6 to 7 Weeks
Awards-Great-Value
Breasley Uno Life 1000 Ortho King Size Mattress

BREASLEY Uno Life 1000 Ortho King Size Mattress

Review Stars
5/5
(18 Reviews)
£329Save £120RRP £449Was £369
From £109.67 per month
From £8.26 per month
  • 1000 Pocket Spring
  • 5 Year Guarantee
Firm
FREE Delivery in 2 to 3 Days
Good-Housekeeping-24
Hypnos Legacy III King Size Mattress

HYPNOS Legacy III King Size Mattress

Review Stars
5/5
(1 Reviews)
£1,649Save £1,240RRP £2,889Was £2,099
From £549.67 per month
From £47.70 per month
  • Natural Fibre Filling
  • ReActivePro 8 Pocket Spring
  • 10 Year Guarantee
Medium
Firm
Removal and Recycle Available
FREE Delivery in 6 to 7 Weeks
Awards-Best-Seller
Vispring Elite King Size Mattress

VISPRING Elite King Size Mattress

Review Stars
4.9/5
(19 Reviews)
£1,499Save £551RRP £2,050Was £1,749
From £499.67 per month
From £37.65 per month
  • Natural Fibre Filling
  • 1254 Pocket Spring
  • 30 Year Guarantee
  • Free Official Vispring Mattress Protector
Soft
Medium
Firm
Extra Firm
Removal and Recycle Available
FREE Delivery in 4 to 5 Weeks
Hypnos Oxford Deluxe King Size Mattress

HYPNOS Oxford Deluxe King Size Mattress

Review Stars
5/5
(3 Reviews)
£899Save £250RRP £1,149Was £999
From £299.67 per month
From £22.58 per month
  • Natural Fibre Filling
  • ReActive 6 Pocket Spring
  • 10 Year Guarantee
Firm
Removal and Recycle Available
FREE Delivery in 6 to 7 Weeks
Mattress-Trial-100-Nights-sized
Sealy Amherst King Size Mattress

SEALY Amherst King Size Mattress

Review Stars
5/5
(1 Reviews)
£799Save £400RRP £1,199Was £999
From £266.34 per month
From £22.58 per month
  • Gel Foam Filling
  • 800 Pocket Spring
  • 5 Year Guarantee
Firm
Removal and Recycle Available
FREE Delivery within 5 Weeks
new-sized
Harrison Spinks Mojave King Size Mattress

HARRISON SPINKS Mojave King Size Mattress

Review Stars
5/5
(1 Reviews)
£849Save £280RRP £1,129Was £999
From £283.0 per month
From £22.58 per month
  • Natural Fibre Filling
  • 2750 Pocket Spring
  • 10 Year Warranty
Firm
Removal and Recycle Available
FREE Delivery in 5 to 6 Weeks
Awards-Special-Buy
NBF Awards_Bed Manufacturer_Winner_F_D
Harrison Spinks Loop Cotton King Size Mattress

HARRISON SPINKS Loop Cotton King Size Mattress

Review Stars
5/5
(4 Reviews)
£869Save £590RRP £1,459Was £1,079
From £289.67 per month
From £24.34 per month
  • Natural Fibre Filling
  • 4250 Pocket Spring
  • 10 Year Warranty
Medium
Firm
Removal and Recycle Available
FREE Delivery in 7 Days
Awards-Special-Buy
NBF Awards_Bed Manufacturer_Winner_F_D
Harrison Spinks Loop Original King Size Mattress

HARRISON SPINKS Loop Original King Size Mattress

Review Stars
5/5
(5 Reviews)
£889Save £410RRP £1,299Was £989
From £296.34 per month
From £22.33 per month
  • 3250 Pocket Spring
  • 10 Year Warranty
Medium
Firm
Removal and Recycle Available
FREE Delivery in 7 Days
Show more
Showing 1 to 12 of 163 Products

Get in the know with our buying guides

View all