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King Size Mattresses - Firm (5')

All the mattresses in this section are a UK Standard King size
5' x 6'6" / 150cm x 200cm and rated as FIRM.

Firmness rating of firm is based on an average weight of 10 stone
(140lb, ~65kg) and is subjective.
 

Review Score 88% based on 14 review(s)
Our Firm King Size Mattresses have earned an aggregate score of
4.4 out of 5.0 based on 14 customer reviews.
We have 16 Firm King Size Mattresses to choose from ranging from £149.99 to £589.99 all with Free Delivery!
Reflex Plus King Size Mattress
Reflex Plus King Size Mattress
 Reviewed (4.0/5.0)Review Score 80% based on 1 review(s)
RRP £219.99
  5 inch reflex foam
  Reflex fabric
  Removable washable cover
149.99
Save: £70.00 - (31%)
FREE Next Working Day delivery available on this Reflex Plus King Size Mattress dependent on postcode.
Firm
Mattress Depth: 13cm
Popular Product
Foam
Great Value
Deep Sleep Eco-Paedic King Size Mattress
Deep Sleep Eco-Paedic King Size Mattress
Bestseller!
 Reviewed (3.5/5.0)Review Score 70% based on 2 review(s)
RRP £299.99
  Viscose Damask Fabric
  Micro Quilted Cover
  Luxurious fillings
169.99
Save: £130.00 - (43%)
FREE Next Working Day delivery available on this Deep Sleep Eco-Paedic King Size Mattress dependent on postcode.
Firm
Mattress Depth: 23cm
Great Value
Popular Product
Made in the UK
Ortho Master King Size Mattress
Ortho Master King Size Mattress
Bestseller!
RRP £299.99
  Totally hypoallergenic fillings
  Hand tufted in a cotton fabric
189.99
Save: £110.00 - (36%)
You can book you delivery date during checkout on this product.
Firm
Hypo-Allergenic
Professional Workmanship
Popular Product
1 Year Guarantee
Reflex Plus Pocket King Size Mattress
Reflex Plus Pocket King Size Mattress
Bestseller!
 Reviewed (4.0/5.0)Review Score 80% based on 1 review(s)
RRP £289.99
  Pocket spring unit
  1 inch reflex foam
  Firmer feel
199.99
Save: £90.00 - (31%)
FREE Next Working Day delivery available on this Reflex Plus Pocket King Size Mattress dependent on postcode.
Firm
Mattress Depth: 22cm
Pocket Sprung
Foam
Popular Product
Ruby Ortho King Size Mattress
Ruby Ortho King Size Mattress
RRP £369.99
  Zero Deflection spring system
  Correctly aligns the spine
  Endorsed by Allergy UK
239.99
Save: £130.00 - (35%)
FREE Delivery within 21 working days
Firm
Made in the UK
Mattress Depth: 23cm
Hypo-Allergenic
Great Value
Catalina Memory King Size Mattress
Catalina Memory King Size Mattress
 Colour Options Available
 Reviewed (5.0/5.0)Review Score 100% based on 1 review(s)
RRP £399.99
  Choose either navy blue or sand beige
  12.5 gauge supercoil framed spring unit
  30mm layer of memory foam
269.99
Save: £130.00 - (32%)
Delivery within 20 days
Firm
Memory Foam 30mm
No Turn
Colour/Finish Options
Pocket Sprung
Ruby Support King Size Mattress
Ruby Support King Size Mattress
RRP £399.99
  PostureTech 620 spring system
  Designed with orthopaedic surgeons
  Consistently firm support
269.99
Save: £130.00 - (32%)
FREE Delivery within 21 working days
Firm
Mattress Depth: 26cm
Made in the UK
Hypo-Allergenic
Great Value
Sealy Support Firm King Size Mattress
Sealy Support Firm King Size Mattress
Bestseller!
 Reviewed (4.5/5.0)Review Score 90% based on 2 review(s)
RRP £349.99
  Zero deflection spring system
  Easy care, no turn
  Traditionally hand tufted
279.99
Save: £70.00 - (20%)
FREE Delivery within 21 working days
Firm
Mattress Depth: 25cm
No Turn
Popular Product
Great Value
Platinum 1500 King Size Mattress
Platinum 1500 King Size Mattress
 Reviewed (5.0/5.0)Review Score 100% based on 1 review(s)
RRP £458.99
  Quality wool and polyester fillings
  1500 Pocket spring system
  Winter and summer side option
299.99
Save: £159.00 - (34%)
You can book you delivery date during checkout on this product.
Firm
1500+ Pocket Springs
Popular Product
Great Value
Professional Workmanship
Pearl Elite King Size Mattress
Pearl Elite King Size Mattress
RRP £469.99
  For people above an average stature
  Durable and supportive
  PostureTech Zero Deflection springs
329.99
Save: £140.00 - (29%)
FREE Delivery within 21 working days
Firm
Durable
Popular Product
Mattress Depth: 28cm
Hypo-Allergenic
Pearl Firm King Size Mattress
Pearl Firm King Size Mattress
RRP £469.99
  PostureTech Zero Deflection springs
  For people above an average stature
  Durable and supportive
329.99
Save: £140.00 - (29%)
FREE Delivery within 21 working days
Firm
Durable
Hypo-Allergenic
Popular Product
Mattress Depth: 28cm
Sealy Jubilee Ortho King Size Mattress
Sealy Jubilee Ortho King Size Mattress
 Colour Options Available
 Reviewed (4.4/5.0)Review Score 88% based on 5 review(s)
RRP £419.99
  Zero deflection spring system
  Memory foam
  Purotex & Tencel technology
339.99
Save: £80.00 - (19%)
FREE Delivery within 21 working days
Firm
Mattress Depth: 24cm
Memory Foam
No Turn
Colour/Finish Options
Hypo Allergenic Backcare Support 1000 King Size Mattress
Hypo Allergenic Backcare Support 1000 King Size Mattress
RRP £559.99
  Pocket springs
  Hypo-allergenic
  Side stitched border
419.99
Save: £140.00 - (25%)
You can book you delivery date during checkout on this product.
Firm
Mattress Depth: 23cm
1000+ Pocket Springs
Hypo-Allergenic
Made in the UK
Empress Memory 1500 King Size Mattress
Empress Memory 1500 King Size Mattress
RRP £649.99
  70mm memory foam
  1500 heat treated pocket spring
  Blu Cool Memory Foam
439.99
Save: £210.00 - (32%)
You can book you delivery date during checkout on this product.
Firm
Memory Foam 70mm
No Turn
Pocket Sprung
Durable
Natural Ortho 2000 King Size Mattress
Natural Ortho 2000 King Size Mattress
Bestseller!
 Reviewed (5.0/5.0)Review Score 100% based on 1 review(s)
RRP £699.99
  Pocket springs
  Luxury fillings
  No turn - easy care
519.99
Save: £180.00 - (25%)
You can book you delivery date during checkout on this product.
Firm
2000+ Pocket Springs
No Turn
Made in the UK
Popular Product
Latex Ortho 1500 King Size Mattress
Latex Ortho 1500 King Size Mattress
RRP £769.99
  Pocket springs
  Latex layer
  No turn
589.99
Save: £180.00 - (23%)
You can book you delivery date during checkout on this product.
Firm
Mattress Depth: 23cm
1500+ Pocket Springs
50mm Latex Foam
No Turn
Bestsellers - Firm King Size Mattresses    Check out these bestsellers.


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