King
King Size Mattresses
A UK king is 5ft wide by 6ft 6in long (150 x 200cm): six inches wider and four inches longer than a double, which gives two people noticeably more room to sleep undisturbed.
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Review Rating
5 Year Warranty
for a guaranteed sleep
Free delivery
on UK mainland
0% interest
Monthly payment
Memory Collection Mattress
Best for: pressure relief lovers
Firmness 7–8/10
£516£430King 5ft
Memory Plus Pocket Mattress
Best for: couples (motion isolation) & side sleepers
Firmness 4–7/10
£540£450King 5ft
Memory Plus Mattress
Best for: pressure relief lovers
Firmness 7–8/10
£600£500King 5ft
Memory Ortho Mattress
Best for: pressure relief lovers
Firmness 7–8/10
£540£450King 5ft
Ernest Mattress
Best for: everyday comfort & guest rooms
Firmness 4–7/10
£588£490King 5ft
Percy Mattress
£612£510King 5ft
Forrest Mattress
Best for: Sleepers who want traditional, reliable supportSleep on something s...
£676.80£570King 5ft
Rock Mattress (25cm)
Best for: very firm preference & heavier bodyweights
Firmness 8–10/10
£836£730King 5ft
Sleep Master Mattress
Best for: back sleepers & firmer support seekers
Firmness 7–8/10
£684£570King 5ft
Clayton Mattress
Best for: all-round comfort & couples
Firmness 7–8/10
£732£610King 5ft
Reeves Mattress
Best for: pressure relief with support
Firmness 7–8/10
£816£680King 5ft
HyCare Comfort Mattress
£918£765King 5ft
Hycare Ortho Mattress
Best for: back/stomach sleepers & back support
Firmness 7–8/10
£864£720King 5ft
Gravity Cell Mattress
Best for: back support + pressure relief
Firmness 7–8/10
£948£790King 5ft
Savoy Mattress
Best for: side sleepers & couples
Firmness 4–7/10
£972£810King 5ft
Cashmere Mattress
Best for: cosy “hotel” comfort & temperature-sensitive sleepers
Firmness 4–7/10
£984£820King 5ft
Diamond Mattress
Best for: softer luxury comfort
Firmness 4–7/10
£984£820King 5ft
Sleep Adaptive Mattress
Best for: combination sleepers & couples
Firmness 7–8/10
£1,008£840King 5ft
Natural Comfort Mattress
Best for: softer luxury comfort
Firmness 4–7/10
£1,008£840King 5ft
IceCool Mattress
Best for: hot sleepers & night sweats
Firmness 7–8/10
£1,212£1,010King 5ft
Lay-Cell Mattress
Best for: side sleepers needing pressure relief
Firmness 4–7/10
£1,392£1,160King 5ft
Will a king fit my room?
Allow about 60cm of clear floor on each side and at the foot, so a king works best in rooms of roughly 3 x 3.2m or more. Check stairs and doorways too: mattresses are made to order and delivered flat.