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Home › Firm Mattresses

Firm Mattresses

Our firm mattresses are ideal for those who like a little more support than a soft or medium mattress can provide. We offer both pocket sprung and memory foam firm mattresses, so you’re sure to find the perfect firm mattress for you. Browse our full range of firm mattresses below.

  • Price: —

18 products

  •

    Duke Ortho Mattress

    From £250 Original price was: £249.79.£200Current price is: £199.84.
    Order Now and Get by June 10, 2026

    Classic Cashmere 1000 Mattress

    From £546 Original price was: £546.£437Current price is: £436.80.
    Order Now and Get by June 10, 2026

    Ebony Natural Mattress

    From £1365 Original price was: £1365.£546Current price is: £546.
    Order Now and Get by June 10, 2026

    Ironstone Mattress

    From £1134 Original price was: £1134.£567Current price is: £567.
    Order Now and Get by June 17, 2026

    Nova Balance Mattress

    From £783 Original price was: £783.£587Current price is: £587.26.
    Order Now and Get by June 17, 2026

    Gel Essence Ortho Mattress

    From £784 Original price was: £784.28.£627Current price is: £627.43.
    Order Now and Get by June 10, 2026

    Hinton Mattress

    From £1617 Original price was: £1617.£647Current price is: £646.80.
    Order Now and Get by June 17, 2026

    Rosaline Mattress

    From £935 Original price was: £934.50.£748Current price is: £747.60.
    Order Now and Get by June 17, 2026

    Nest Support Mattress

    From £1006 Original price was: £1006.43.£755Current price is: £754.82.
    Approximate Delivery Time: 1 - 2 Weeks

    Motion Comfort Mattress

    From £1092 Original price was: £1092.£874Current price is: £873.60.

    Ruby Mattress

    From £1334 Original price was: £1333.50.£933Current price is: £933.46.
    Order Now and Get by June 17, 2026

    Nectus Pure Support Mattress

    From £1190 Original price was: £1189.66.£952Current price is: £951.72.
    Order Now and Get by July 1, 2026

    Gel Plush Ortho Mattress

    From £1190 Original price was: £1190.£952Current price is: £952.01.
    Order Now and Get by June 10, 2026

    Aura Support Mattress

    From £1393 Original price was: £1393.£1045Current price is: £1044.74.
    Approximate Delivery Time: 1 - 2 Weeks

    Deluxe Natural Mattress

    From £2657 Original price was: £2656.50.£1063Current price is: £1062.60.
    Order Now and Get by June 17, 2026

    Bamboo Nurture 4000 Mattress

    From £1470 Original price was: £1470.£1176Current price is: £1176.
    Order Now and Get by June 17, 2026

    Flora Care Mattress

    From £1487 Original price was: £1487.£1190Current price is: £1189.61.
    Order Now and Get by July 1, 2026

    Motion Luxe 7000 Mattress

    From £3406 Original price was: £3406.£2725Current price is: £2724.79.

What is a firm mattress?

A firm mattress is a type of mattress that provides a high level of support and typically has a minimal amount of cushioning. Firm mattresses are designed to keep the body in a relatively flat position, which can help keep the spine aligned and prevent it from sinking into the mattress. A firm mattress is rated a ‘4’ on our scale of firmness, with 1 being softest and 5 being the firmest.

Is a firm mattress better for back pain?

Firm mattresses are often recommended for people who have back pain, as they can provide a supportive surface that keeps the spine in a neutral position. 

What is the best firm mattress?

The best firm mattress for you will depend on your personal preferences, your sleeping position and whether or not you have back problems. For the ultimate comfort, we recommend hybrid firm mattresses which contain both memory foam and pocket springs, such as our Bamboo nurture mattress.

Are firm mattresses good for side sleepers?

Firm mattresses are generally not recommended for side sleepers. When sleeping on your side, your body’s weight is concentrated on the hips and shoulders, and a firm mattress may not provide enough give to properly cushion these areas, which can result in uncomfortable pressure points. We would recommend a medium or medium firm mattress for side sleepers.

Buy firm mattresses and more with Sussex Beds

Browse our full range of firm mattresses online, or take a look at our medium soft, medium, medium firm or extra firm options. UK delivery, assembly service and disposal of existing furniture services available.

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