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Medium Firm King Size Mattresses

Mattresses by size

  1. Single.

    Single

  2. Small double.

    Small double

  3. Double.

    Double

  4. Kingsize.

    Kingsize

  5. Superking.

    Superking

  6. Kids mattresses.

    Kids mattresses

112 products
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Habitat Elite Memory Foam Kingsize Mattress
Rating 4.6 out of 5, from 601 reviews
From
£310.00
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Silentnight Travis Miracoil Double Sided Mattress - Kingsize
Rating 4.6 out of 5, from 3645 reviews
Save £59.00
From
£230.00
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Emma Original Lite Hybrid Mattress - Kingsize
Rating 4.6 out of 5, from 680 reviews
Save 20%
From
£284.00
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Silentnight Middleton 800 Pocket Memory Mattress - Kingsize
Rating 4.7 out of 5, from 1673 reviews
Save £82.00
From
£323.00
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Emma Original Pro Hybrid Mattress - Kingsize
Rating 4.6 out of 5, from 56 reviews
Save £294.00
From
£441.00
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Somnior Two Sided Medium Firm Pocket Spring Orthopaedic Mattress - King
Rating 5.0 out of 5, from 1 reviews
Save £27.50
From
£247.50
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Rattantree Hybrid Gel 20cm Memory Foam Mattress Medium Firm - King Size
Rating 5.0 out of 5, from 1 reviews
From
£159.99
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Dormeo Antigua Hybrid Mattress - Kingsize
Rating 4.6 out of 5, from 262 reviews
Save £71.00
From
£279.00
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Aspire Ortho 1000 Pocket Sprung Mattress - Kingsize
Rating 5.0 out of 5, from 3 reviews
From
£289.00
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Nestledown Pocket Sprung Ortho Mattress - Kingsize
Rating 5.0 out of 5, from 3 reviews
From
£260.00
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Rattantree Hybrid Gel 25cm Memory Foam Mattress Medium Firm - King Size
Rating 1.0 out of 5, from 1 reviews
From
£179.99
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Argos Home Hybrid 2400 Pocket Kingsize Mattress
Rating 4.6 out of 5, from 292 reviews
From
£385.00
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Silentnight Memory 2000 Pocket Pillowtop Mattress -Kingsize
Rating 4.9 out of 5, from 8 reviews
Save £156.00
From
£619.00
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Simba Hybrid Mattress - Kingsize
Rating 4.8 out of 5, from 5593 reviews
From
£920.00
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Somnior Hybrid Breathable Memory and Reflex Foam Pocket Mattress - King
From
£315.00
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SleepSoul Space 2000 Medium Firm Hybrid Mattress - King
From
£450.00
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Everyday Ortho Open Coil Mattress - King
From
£149.00
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Arthur Sleep Cool Pocket 800 Medium Firm Hybrid Mattress - King
From
£230.00
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Rattantree Hybrid Gel 15cm Memory Foam Mattress Medium Firm - King Size
From
£149.99
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Somnior Hypoallergenic Memory and Reflex Foam Pocket Mattress - King
Save £25.50
From
£229.50
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Home Treats King Size 5ft Hybrid Pocket Sprung Mattress - White
Save £13.50
From
£121.49
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Sleepeezee Elite Deluxe 1000 Medium Firm Pocket Sprung Mattress - King
From
£514.00
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DS Living Iris Reflex 25cm Foam Mattress - King
From
£181.00
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DS Living Premium Comfort Orthopaedic Reflex Foam Mattress - King Size
Save £69.00
From
£206.00
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Nestledown Comfort 600 Mattress - Kingsize
From
£299.00
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Silentnight Eco Comfort Breathe Mattress -Kingsize
Rating 4.8 out of 5, from 49 reviews
Save £177.00
From
£702.00
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VALUE 20 pc furn20new badge
3 Colours available
Silentnight Marlow Memory Mattress & Divan Set
From
£740.00
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Silentnight Studio Eco 1000 Pocket Mattress - King
Rating 4.5 out of 5, from 44 reviews
Save 20%
From
£415.00
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Argos Home Salisbury 1000 Pocket Natural Mattress - Kingsize
Rating 4.5 out of 5, from 167 reviews
From
£350.00
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Argos Home Salisbury 1000 Pocket Memory Mattress - Kingsize
Rating 4.5 out of 5, from 167 reviews
From
£395.00
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Silentnight Breathe Plus Gel Foam Mattress - Kingsize
Rating 4.4 out of 5, from 15 reviews
Save £82.00
From
£323.00
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Silentnight Hush Memory Foam Mattress - Kingsize
Rating 4.3 out of 5, from 34 reviews
Save £59.00
From
£230.00
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Silentnight Breathe Gel Foam Mattress - Kingsize
Rating 4.5 out of 5, from 19 reviews
Save £68.00
From
£267.00
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Sealy Advantage Deluxe Sense Medium Firm Mattress -Kingsize
Rating 5.0 out of 5, from 1 reviews
Save 1/3
From
£689.00
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VALUE 20 pc furn20
Sealy Posturepedic Elevate MemorySense Medium Firm Mattress - Kingsize
Rating 5.0 out of 5, from 1 reviews
From
£1384.95
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Silentnight Align 1400 Orthopaedic Mattress - Kingsize
Rating 4.9 out of 5, from 14 reviews
Save £354.00
From
£531.00
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Tempur Ease 25 Memory Foam Mattress - Kingsize
From
£1505.00
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Jay-Be Ryze Memory e-Fibre Mattress - Kingsize
Rating 4.1 out of 5, from 11 reviews
From
£349.00
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Silentnight Ultragel 1000 Pkt Sprung Mattress - Kingsize
Rating 5.0 out of 5, from 12 reviews
Save £152.00
From
£603.00
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Silentnight Memory Cool 1000 Pkt Mattress - Kingsize
Rating 4.8 out of 5, from 29 reviews
Save 20%
From
£567.00
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VALUE 20 pc furn20
Aspire Cashmere 1000 Pocket Spring Mattress - Kingsize
Rating 4.4 out of 5, from 25 reviews
From
£425.00
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Panda Hybrid Bamboo Mattress Pro - Kingsize
Rating 4.9 out of 5, from 134 reviews
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From
£926.00
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Aspire 7000 Pocket Mattress - Kingsize
Rating 4.8 out of 5, from 20 reviews
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From
£679.00
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VALUE 20 pc furn20
Aspire 2000 Pocket Natural Mattress - Kingsize
Rating 4.4 out of 5, from 18 reviews
From
£550.00
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VALUE 20 pc furn20
Aspire 1000 Pocket Damask Mattress - Kingsize
Rating 4.6 out of 5, from 31 reviews
From
£390.00
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Millbrook Tranquil 3000 Pocket Mattress - Kingsize
Rating 4.4 out of 5, from 8 reviews
From
£735.00
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Millbrook Evolution 2000 Pocket Mattress - Kingsize
Rating 4.7 out of 5, from 3 reviews
From
£669.00
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Silentnight Ashford 1400 Pocket Memory Mattress - Kingsize
Rating 4.7 out of 5, from 303 reviews
Save £122.00
From
£483.00
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Essential Value Pocket Deluxe 1000 Medium Firm Mattress - King
From
£279.00
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Argos Home Winslow 600 Pocket Kingsize Mattress
Rating 4.4 out of 5, from 98 reviews
From
£235.00
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Emma Original Hybrid Mattress - Kingsize
Rating 4.4 out of 5, from 205 reviews
Save £238.00
From
£357.00
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Argos Home Elmdon Sprung Memory Rolled Kingsize Mattress
Rating 4.2 out of 5, from 1466 reviews
From
£235.00
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Home Treats King Size 5ft Pocket Sprung Quilted Mattress - White
From
£129.99
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Sleepeezee Ortho Foundation 800 Pocket Mattress - Kingsize
Rating 4.9 out of 5, from 21 reviews
From
£580.00
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Sleepeezee Cool Ease 800 Pocket Mattress - Kingsize
Rating 4.8 out of 5, from 20 reviews
From
£630.00
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Silentnight Knightly 2000 Pocket Luxury Mattress - Kingsize
Rating 4.7 out of 5, from 174 reviews
Save 1/3
From
£572.00
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Argos Home Carlton 800 Pocket King Mattress
Rating 4.5 out of 5, from 260 reviews
From
£275.00
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Silentnight Dewsbury 2800 Pocket Memory Mattress - Kingsize
Rating 4.8 out of 5, from 303 reviews
Save £177.00
From
£702.00
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Habitat Aleta Natural 2000 Pkt Pillowtop Mattress - Kingsize
Rating 4.5 out of 5, from 8 reviews
From
£675.00
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Habitat Aleta Natural 2000 Pkt Comfort Mattress - Kingsize
Rating 3.5 out of 5, from 2 reviews
From
£575.00
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