Extra Firm King Size Mattresses

194 results

Silentnight Miracoil Ortho Luxury - KINGSIZE Mattress 150cm RRP £530!
New (other) · Silentnight
£249.99
or Best Offer
Free postage
ORTHOPEADIC FULL FOAM MATTRESS SINGLE DOUBLE KING 3FT 4FT6 5FT
FAST & FREE DELIVERY!
Brand new
£69.99 to £399.99
Free postage
DuraTribe OrthoSmart 2000 Reflex Foam Extra Firm Mattress with removable cover
Brand new
£179.00 to £269.90
Free postage
Est. delivery Tue, Aug 5
Blue Hard Firm Foam with Memory Foam Topper Mattress Comfortable Rolled Pack UK
Brand new
£105.99 to £205.99
(£205.99/Unit)
Free postage
8" Extra Firm Hard Mattress Blue Foam 3ft/4ft/4ft6/5ft ( 33/190 grade )
Brand new
£122.99 to £166.49
Free postage
11 watching
FOAMEX Recon Firm Foam Mattress – Ultra-Comfortable, Easy-to-Clean, 100% Silent
Brand new
£59.99 to £229.00
Free postage
Hard Supportive Blue Foam Mattress – 1" to 8" Thickness– 3FT-5FT Sizes Available
Brand new
£39.99 to £129.99
Free postage
Staples and Co. Eco 2000 Restore Mattress, 5ft Kingsize - RRP £1,699
New (other) · Staples
£699.00
£59.00 P&P
Extra Firm Orthopaedic Mattress - Extra Firm Health Mattress - Batch AMZ 001
Brand new · Mattress Firm
£146.27 to £234.67
(£234.67/kg)
Free postage
Hardrock Super Firm Reflex Foam Mattress, Firm Comfort, Cleanable Cover, Silent
Brand new
£99.90 to £399.00
Free postage
Relyon Heyford Ortho 1500 Pocket Mattress 5FT Kingsize RRP £1399
New (other) · Reylon
£399.00
£59.00 P&P
Relyon Heyford Ortho 5FT Kingsize - RRP £899
New (other)
£299.00
£59.00 P&P
Blue Foam Hard Mattress Extra Firm With Zip Cover 3FT 4FT 4FT6 5FT / 4"&5"High
Brand new
£89.99 to £109.99
Free postage
Back Care Extra firm Mattress Available in All Sizes
Brand new · Mattress Firm
£169.00 to £289.00
Free postage
Relyon Heyford Ortho Mattress | 1500 Pocket Springs | Extra Firm | Orthopaedic
Brand new
£617.10 to £900.24
Free postage
Est. delivery Tue, Aug 5
2 watching
18cm Hard Blue Foam Mattress Back Care 3ft/4ft6/4ft/5ft ( GRADE 33/190 )
Brand new
£109.99 to £154.99
Free postage
15 watching
Simbe extra firm Mattress, UK king size - White
Brand new · Simba
(144)
£311.64
or Best Offer
Free postage
40 watching
New listingNew Blue Foam Hard Firm Mattress Grade 33/190 With Washable Zip Cover 3Ft,4FT6
Brand new
£89.99 to £139.99
(£109.99/Unit)
Free postage
Deep Fill Pocket Sprung Orthopaedic Mattress
Brand new
£170.00 to £400.00
Free postage
4400 Orthopaedic Hybrid Memory Foam Pocket Sprung Mattress Single Double king
Brand new
£64.99 to £299.00
Free postage
20 watching
EXTRA THICK EXTRA FIRM, REAL POCKET SPRUNG MATTRESS!SINGLE DOUBLE KING SIZE!
Brand new
£169.99 to £259.99
Free postage
10" Blue Foam Orthopedic Mattress Extra Firm Hard Blue Foam Single & King
Brand new
£169.99 to £204.55
Free postage
New Blue Hard Firm Foam With Memory Foam Topper Mattress 5" to 10" Deep UK Sizes
Brand new
£89.99 to £189.99
(£189.99/Unit)
Free postage
Luxury Royal Crown Full Extra Firm Mattress All Sizes
Brand new · Royal
£320.00 to £420.00
Free postage
Naturalex Extrafresh Viscoelastic Memory Foam Mattress 5ft King Size150x200
Brand new
£209.71
Free postage
6 watching
4" & 5" Blue Hard Firm Foam with Removeable Zip Cover Comfortable Mattress 4FT6
Brand new
£79.99 to £115.99
(£115.99/Unit)
Free postage
Silentnight Pocket Essentials 1400 Ortho Mattress | Extra Firm | Mirapockets
Brand new · Silentnight
£378.25 to £438.60
Free postage
Est. delivery Tue, Aug 5
Sealy Columbia Ortho Extra Firm 5FT Kingsize Mattress - RRP £1699
New (other) · Sealy
£599.00
£59.00 P&P
8" Extra Hard Mattress Blue Foam Orthopedic single,double,Small Double,King (G40
Brand new
£139.99 to £189.99
(£189.99/Unit)
Free postage
Super Hard Rock c40 Orthopaedic Blue Foam Mattresses & Toppers All Sizes
Brand new
£167.08 to £358.58
Free postage
5FT KING SIZE 28000 luxury pillow top pocket sprung mattress RRP £1299.99
Brand new
£474.99 to £529.99
Free postage
15 sold
6"/ 5" Blue Foam Extra Firm Hard Mattress back care ( GRADE 33/190)
Brand new
£79.79 to £133.99
Free postage
FAST DELIVERY! HIGH QUALITY 5ft KING SIZE EXTRA FIRM mattress NO SPRINGS!
Brand new
£219.99
Free postage
6" Back Care Hard Firm Blue Foam Mattress 3ft/4ft/4ft6/5ft ( GRADE 33/190 )
Brand new
£101.99 to £139.99
Free postage
2ft6,3ft,4ft,4ft6,5ft,6ft Extra Firm Mattress 17cm Deep Mattress Without springs
Brand new
£159.99 to £269.99
Free postage
6"/ 5" Blue Foam Extra Firm Hard Mattress Back Care with Zip Cover 2ft6&5ft&4ft6
Brand new
£94.99 to £139.99
Free postage
Extra Firm Orthopaedic Mattress - Extra Firm Health Mattress - Batch AMZ 006
Brand new · Mattress Firm
£141.07 to £234.67
(£234.67/kg)
Free postage
Signature Platinum 2000 Pocket Sprung Orthopaedic Natural Fillings Mattress
Brand new
£185.00 to £325.00
Free postage
3 watching
Luxury Silk Pocket Memory Sprung Mattress | 2000 3000 Pocket | 3FT 4FT6 5FT
FAST & FREE DELIVERY | RRP £1399!
Brand new
£299.99 to £749.99
Free postage
4900 Hybrid Orthopaedic Memory Foam Pocket Sprung Mattress Single Double king
Brand new
£63.00 to £297.25
Free postage
2D MEMORY 5000 LUXURY SOFT KNIT POCKET SPRING MATTRESS - UK MADE
Brand new · Knight
£199.99 to £399.99
Free postage
9 watching
2ft6,3ft,4ft,4ft6,5ft Luxury Extra Firm Mattress.Choose Size.
Brand new
£179.99 to £299.99
Free postage
CBS Tuffley Extra Firm 12.5g Mattress
FREE NEXT DAY DELIVERY - 20% off with code JULYPAY20
Brand new
£208.30 to £312.43
Free postage
LUXURY YORK ORTHOPAEDIC MATTRESS 3FT 4FT 4FT6 DOUBLE 5FT KING SIZE
Brand new
£368.36 to £736.96
Free postage
Extra Firm Orthopaedic Mattress - Extra Firm Health Mattress - Batch AMZ 012
Brand new · Mattress Firm
£146.27 to £234.67
(£234.67/kg)
Free postage
5ft King Silentnight Eco Comfort Miracoil Ortho Mattress
Brand new · Silentnight
£335.36
Free postage
Only 2 left
PILLOW TOP LUXURY HAND STITCHED 45000 POCKET SPRUNG MATTRESS RRP £1699.99
Brand new
£539.77 to £699.77
Free postage
5 watching
Luxury Royal Crown Full Extra Firm Mattress All Sizes
Brand new · Royal
£310.00 to £410.00
Free postage
HYBRID ENCAPSULATED QUILTED LATEX POCKET SPRUNG MATTRESS RRP £1,999+
Brand new
£499.95 to £669.95
Free postage
3 watching
Memory Spring Mattress, Luxury Open-Coil Spring with Memory Foam Layer
Brand new
£115.00 to £260.00
Free postage
18cm Hard Blue Foam Mattress Back Care 3ft/4ft6/4ft/5ft ( GRADE 40/200 )
Brand new
£129.99 to £179.99
Free postage
Sealy Elevate Extra Firm Mattress, King Size RRP £1799 (SL8)
Brand new · Sealy
£899.99
£50.00 P&P
NATURAL HAND STITCHED POCKET SPRUNG MATTRESS RRP £1,999+
Brand new
£499.95 to £669.95
Free postage
Hybrid Extra firm mattress Pillow top Mattress All size available Free Delivery
Brand new · T.O.P.
£281.48 to £363.68
Free postage
PILLOW TOP HAND STITCHED 5FT KING LUXURY 45000 POCKET SPRUNG MATTRESS RRP £1699
Brand new
£579.77 to £619.77
Free postage
KING SIZE MATTRESSES! BRAND NEW! 5ft x 6ft6! 150cm x 200cm! Choose firmness!
Brand new
£120.00 to £400.00
Free postage
2" Blue Foam Mattress Topper Firm Support Foam With Cover ( GRADE 33/190 )
Brand new
£58.99 to £69.99
Free postage
Pillow Top 25000 luxury pocket sprung mattress, Natural Fillings RRP £1699.99
Brand new
£399.99 to £590.00
Free postage
15 sold
BACK CARE ORTHO ORTHOPEADIC MATTRESS - EXTRA FIRM - 3FT/4FT/5FT/6FT - MADE IN UK
Brand new · Knight
£169.00 to £249.00
Free postage
king size mattress memory foam
Pre-owned
£156.68
or Best Offer
Free postage
Est. delivery Tue, Aug 5

Extra Firm King Size Mattresses

Shop by category

194 results

Silentnight Miracoil Ortho Luxury - KINGSIZE Mattress 150cm RRP £530!

ORTHOPEADIC FULL FOAM MATTRESS SINGLE DOUBLE KING 3FT 4FT6 5FT

DuraTribe OrthoSmart 2000 Reflex Foam Extra Firm Mattress with removable cover

Blue Hard Firm Foam with Memory Foam Topper Mattress Comfortable Rolled Pack UK

8" Extra Firm Hard Mattress Blue Foam 3ft/4ft/4ft6/5ft ( 33/190 grade )

FOAMEX Recon Firm Foam Mattress – Ultra-Comfortable, Easy-to-Clean, 100% Silent

Hard Supportive Blue Foam Mattress – 1" to 8" Thickness– 3FT-5FT Sizes Available

Staples and Co. Eco 2000 Restore Mattress, 5ft Kingsize - RRP £1,699

Extra Firm Orthopaedic Mattress - Extra Firm Health Mattress - Batch AMZ 001

Hardrock Super Firm Reflex Foam Mattress, Firm Comfort, Cleanable Cover, Silent

Relyon Heyford Ortho 1500 Pocket Mattress 5FT Kingsize RRP £1399

Relyon Heyford Ortho 5FT Kingsize - RRP £899

Blue Foam Hard Mattress Extra Firm With Zip Cover 3FT 4FT 4FT6 5FT / 4"&5"High

Back Care Extra firm Mattress Available in All Sizes

Relyon Heyford Ortho Mattress | 1500 Pocket Springs | Extra Firm | Orthopaedic

18cm Hard Blue Foam Mattress Back Care 3ft/4ft6/4ft/5ft ( GRADE 33/190 )

Simbe extra firm Mattress, UK king size - White

New listingNew Blue Foam Hard Firm Mattress Grade 33/190 With Washable Zip Cover 3Ft,4FT6

Deep Fill Pocket Sprung Orthopaedic Mattress

4400 Orthopaedic Hybrid Memory Foam Pocket Sprung Mattress Single Double king

EXTRA THICK EXTRA FIRM, REAL POCKET SPRUNG MATTRESS!SINGLE DOUBLE KING SIZE!

10" Blue Foam Orthopedic Mattress Extra Firm Hard Blue Foam Single & King

New Blue Hard Firm Foam With Memory Foam Topper Mattress 5" to 10" Deep UK Sizes

Luxury Royal Crown Full Extra Firm Mattress All Sizes

Naturalex Extrafresh Viscoelastic Memory Foam Mattress 5ft King Size150x200

4" & 5" Blue Hard Firm Foam with Removeable Zip Cover Comfortable Mattress 4FT6

Silentnight Pocket Essentials 1400 Ortho Mattress | Extra Firm | Mirapockets

Sealy Columbia Ortho Extra Firm 5FT Kingsize Mattress - RRP £1699

8" Extra Hard Mattress Blue Foam Orthopedic single,double,Small Double,King (G40

Super Hard Rock c40 Orthopaedic Blue Foam Mattresses & Toppers All Sizes

5FT KING SIZE 28000 luxury pillow top pocket sprung mattress RRP £1299.99

6"/ 5" Blue Foam Extra Firm Hard Mattress back care ( GRADE 33/190)

FAST DELIVERY! HIGH QUALITY 5ft KING SIZE EXTRA FIRM mattress NO SPRINGS!

6" Back Care Hard Firm Blue Foam Mattress 3ft/4ft/4ft6/5ft ( GRADE 33/190 )

2ft6,3ft,4ft,4ft6,5ft,6ft Extra Firm Mattress 17cm Deep Mattress Without springs

6"/ 5" Blue Foam Extra Firm Hard Mattress Back Care with Zip Cover 2ft6&5ft&4ft6

Extra Firm Orthopaedic Mattress - Extra Firm Health Mattress - Batch AMZ 006

Signature Platinum 2000 Pocket Sprung Orthopaedic Natural Fillings Mattress

Luxury Silk Pocket Memory Sprung Mattress | 2000 3000 Pocket | 3FT 4FT6 5FT

4900 Hybrid Orthopaedic Memory Foam Pocket Sprung Mattress Single Double king

2D MEMORY 5000 LUXURY SOFT KNIT POCKET SPRING MATTRESS - UK MADE

2ft6,3ft,4ft,4ft6,5ft Luxury Extra Firm Mattress.Choose Size.

CBS Tuffley Extra Firm 12.5g Mattress

LUXURY YORK ORTHOPAEDIC MATTRESS 3FT 4FT 4FT6 DOUBLE 5FT KING SIZE

Extra Firm Orthopaedic Mattress - Extra Firm Health Mattress - Batch AMZ 012

5ft King Silentnight Eco Comfort Miracoil Ortho Mattress

PILLOW TOP LUXURY HAND STITCHED 45000 POCKET SPRUNG MATTRESS RRP £1699.99

Luxury Royal Crown Full Extra Firm Mattress All Sizes

HYBRID ENCAPSULATED QUILTED LATEX POCKET SPRUNG MATTRESS RRP £1,999+

Memory Spring Mattress, Luxury Open-Coil Spring with Memory Foam Layer

18cm Hard Blue Foam Mattress Back Care 3ft/4ft6/4ft/5ft ( GRADE 40/200 )

Sealy Elevate Extra Firm Mattress, King Size RRP £1799 (SL8)

NATURAL HAND STITCHED POCKET SPRUNG MATTRESS RRP £1,999+

Hybrid Extra firm mattress Pillow top Mattress All size available Free Delivery

PILLOW TOP HAND STITCHED 5FT KING LUXURY 45000 POCKET SPRUNG MATTRESS RRP £1699

KING SIZE MATTRESSES! BRAND NEW! 5ft x 6ft6! 150cm x 200cm! Choose firmness!

2" Blue Foam Mattress Topper Firm Support Foam With Cover ( GRADE 33/190 )

Pillow Top 25000 luxury pocket sprung mattress, Natural Fillings RRP £1699.99

BACK CARE ORTHO ORTHOPEADIC MATTRESS - EXTRA FIRM - 3FT/4FT/5FT/6FT - MADE IN UK

king size mattress memory foam

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