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.

2’6″ Small Single Duke Ortho Mattress
was

£170
Now

£170
3’0″ Single Duke Ortho Mattress
was

£170
Now

£170
3’0″ Single Snooze Easy Mattress
was

£270
Now

£270
4’0″ Small Double Duke Ortho Mattress
was

£230
Now

£230
4’6″ Double Duke Ortho Mattress
was

£230
Now

£230
2’6″ Small Single Snooze Easy Mattress
was

£270
Now

£270
5’0″ King Size Duke Ortho Mattress
was

£260
Now

£260
3’0″ Single Cosy Slumber Mattress
was

£413
Now

£413
4’6″ Double Snooze Easy Mattress
was

£390
Now

£390
5’0″ King Size Snooze Easy Mattress
was

£440
Now

£440
2’6″ Small Single Cosy Slumber Mattress
was

£413
Now

£413
4’0″ Small Double Cosy Slumber Mattress
was

£563
Now

£563
4’6″ Double Cosy Slumber Mattress
was

£563
Now

£563
5’0″ King Size Cosy Slumber Mattress
was

£730
Now

£730
2’6″ Small Single Ironstone 2000 Mattress
was

£870
Now

£609
2’6″ Small Single Rosaline Mattress
was

£720
Now

£576
3’0″ Single Rosaline Mattress
was

£720
Now

£576
4’6″ Double Gel Essence Ortho Mattress
was

£966
Now

£676
2’6″ Small Single Hinton Mattress
was

£1,310
Now

£786
3’0″ Single Hinton Mattress
was

£1,310
Now

£786
2’6″ Small Single Pocket Superior 4000 Mattress
was

£860
Now

£860
3’0″ Single Ironstone 2000 Mattress
was

£870
Now

£609
3’0″ Single Gel Plush Ortho Mattress
was

£936
Now

£655
4’0″ Small Double Gel Essence Ortho Mattress
was

£966
Now

£676
4’6″ Double Gel Essence Ortho Mattress
was

£966
Now

£676
4’0″ Small Double Hinton Mattress
was

£1,550
Now

£930
4’6″ Double Hinton Mattress
was

£1,550
Now

£930
2’6″ Small Single Ruby 2000 Mattress
was

£1,230
Now

£615
5’0″ King Size Gel Essence Ortho Mattress
was

£1,125
Now

£788
5’0″ King Size Hinton Mattress
was

£1,745
Now

£1,047
was
Now
4’6″ Double Pocket Superior 4000 Mattress
was

£1,180
Now

£1,180
4’0″ Small Double Pocket Superior 4000 Mattress
was

£1,180
Now

£1,180
4’0″ Small Double Gel Plush Ortho Mattress
was

£1,290
Now

£903
4’6″ Double Gel Plush Ortho Mattress
was

£1,290
Now

£903
6’0″ Super King Gel Plush Ortho Mattress
was

£1,761
Now

£1,233
4’0″ Small Double Ironstone 2000 Mattress
was

£1,240
Now

£868
4’6″ Double Ironstone 2000 Mattress
was

£1,240
Now

£868
was
Now
5’0″ King Size Gel Plush Ortho Mattress
was

£1,470
Now

£1,029
5’0″ King Size Pocket Superior 4000 Mattress
was

£1,360
Now

£1,360
4’0″ Small Double Ruby 2000 Mattress
was

£1,740
Now

£870
4’6″ Double Ruby 2000 Mattress
was

£1,740
Now

£870
5’0″ King Size Ironstone 2000 Mattress
was

£1,440
Now

£1,008
6’0″ Super King Hinton Mattress
was

£2,345
Now

£1,407
3’0″ Single Deluxe Natural Mattress
was

£1,987
Now

£1,192
was
Now
was
Now
5’0″ King Size Ruby 2000 Mattress
was

£1,970
Now

£985
6’0″ Super King Gel Plush Ortho Mattress
was

£1,761
Now

£1,233
4’0″ Small Double Deluxe Natural Mattress
was

£2,209
Now

£1,325
4’6″ Double Deluxe Natural Mattress
was

£2,209
Now

£1,325
6’0″ Super King Pocket Superior 4000 Mattress
was

£1,650
Now

£1,650
was
Now
5’0″ King Size Deluxe Natural Mattress
was

£2,368
Now

£1,421
4’6″ Double Bamboo Fresh 4000 Mattress
was

£1,827
Now

£914
was
Now
was
Now
6’0″ Super King Ruby 2000 Mattress
was

£2,410
Now

£1,205
5’0″ King Size Bamboo Fresh 4000 Ottoman Bed
was

£0
Now

£0
6’0″ Super King Deluxe Natural Mattress
was

£2,827
Now

£1,696
was
Now
was
Now
See More Firm Mattresses

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 5’0″ King Size Bamboo Fresh 4000 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 soft medium, medium, medium firm or extra firm options. UK delivery, assembly service and disposal of existing furniture services available.