Best mattress for back sleepers
Back sleeping is the easiest position for a mattress to get right and the easiest to overcorrect for.
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Lie on your back and your body is not flat. There is a hollow under your lower back between your shoulders and your hips, and that gap is the entire problem.
Too soft and your hips sink, the gap widens, and the lower back sags all night. Too firm and the mattress bridges straight from shoulders to hips, leaving the lumbar region unsupported in mid-air. Both produce lower back ache and people usually respond by going firmer, which is the wrong direction half the time.
What you want is a surface that fills the hollow rather than bridging it: firm enough that the hips do not sink, giving enough that the lower back is actually met. Generally 6 to 8 out of 10.
The picks
The pick, if you want one answer
Origin Hybrid Pro Mattress, 8.4 / 10. Zoning varies spring gauge along the mattress, which is the most direct way to hold the hips up while still meeting the lumbar hollow.
| Product | Best for | From | Score |
|---|---|---|---|
| Origin Hybrid Pro Mattress | Best overall | £374 | 8.4 / 10 |
| Silentnight Sofia 1200 Mirapocket | Best zoned | Mid range | 7.2 / 10 |
| Mlily Premier 2000 | Best value | Budget to mid | 7.2 / 10 |
| Origin LumbarCloud Mattress | Best for heavier back sleepers | £797 | 8.2 / 10 |
Origin Hybrid Pro Mattress: Best overall
£374 · 8.4 / 10
The highest scoring mattress on this site at 8.4. Back sleeping is the position best served by a straightforwardly good mattress rather than a specialised one, and this is the most construction per pound available in Britain.
Buy it if
You want the strongest general specification and you sleep mostly on your back.
Do not buy it if
You are heavier and want maximum depth. Step up to the LumbarCloud.
Read the full Origin Hybrid Pro Mattress review
Silentnight Sofia 1200 Mirapocket: Best zoned
Mid range · 7.2 / 10
Zoned 1,200 pocket springs, firmer under the lumbar and more giving under shoulder and hip. For a back sleeper that is precisely the right arrangement, because it holds the pelvis level while meeting the hollow above it. The 60 night comfort exchange buying direct lets you correct firmness if you misjudge it.
Buy it if
You want spring gauge varied along the mattress and the option to change firmness.
Do not buy it if
You are over about sixteen stone.
Read the full Silentnight Sofia 1200 Mirapocket review
Mlily Premier 2000: Best value
Budget to mid · 7.2 / 10
Two thousand springs is the point where every spring is still doing meaningful work and none has been thinned to make room for the next. Back sleeping does not need the very high counts that plush surfaces require, so this is the sweet spot rather than a compromise.
Buy it if
You want the spring count most back sleepers should actually be buying.
Do not buy it if
You want a plush surface.
Read the full Mlily Premier 2000 review
Origin LumbarCloud Mattress: Best for heavier back sleepers
£797 · 8.2 / 10
A heavier back sleeper sinks further at the hips, which is exactly what widens the lumbar gap. Thirty-five centimetres with up to 8,000 springs gives enough structure beneath to stop that happening while the surface still meets the hollow.
Buy it if
You are of average or heavier build and want depth under a firm-ish surface.
Do not buy it if
You are under about eleven stone. The lower third does nothing for you.
Read the full Origin LumbarCloud Mattress review
The hand test, which takes ten seconds
Lie on your back on your current mattress and slide a flat hand into the gap under your lower back.
| What happens | What it means |
|---|---|
| Your hand slides in easily, with room to spare | Too firm. The mattress is bridging your lumbar hollow rather than filling it. |
| Your hand is a snug fit | About right. |
| You cannot get your hand in at all | Too soft. Your hips have sunk and the gap has closed the wrong way. |
Do it again at ten minutes rather than immediately, because the mattress needs time to settle under you. This one test tells you more than most product pages.
Firmness by build, not by preference
A stated firmness is not absolute. A mattress compresses until its resistance matches your weight, so the same 7 out of 10 is a different mattress to different people.
| Build | Aim for |
|---|---|
| Under 10 stone | 5 to 7. A stated 8 will bridge your lumbar gap. |
| 10 to 15 stone | 6 to 8. Ratings are set for this range. |
| Over 15 stone | 7 to 8 with 30cm or more of depth. You need structure beneath, not just a firm surface. |
Your pillow matters less here, and still matters
Back sleepers need medium height: enough to fill the hollow at the back of the neck, not so much that the head is pushed forward and the chin tucks toward the chest.
Lie in position for ten minutes and have someone look at you from the side. Your head should sit in line with your torso rather than propped up.
Two involuntary signals still apply. Waking having pushed the pillow aside means too high. An arm habitually under it means too low.
One extra option worth knowing: a small pillow or rolled towel under the knees takes tension off the lower back by letting the pelvis tilt slightly. It costs nothing and it helps a lot of back sleepers who assumed the mattress was the problem.
What not to buy
The firmest mattress you can find. This is the standard overcorrection for back pain, and on a back sleeper it bridges the lumbar hollow rather than supporting it.
A very soft mattress, or a cheap one that behaves like one. Hips sink, the gap widens, the lower back sags. Soft needs a high spring count to work at all, and at budget prices you cannot have both.
A thick memory foam topper. It softens the surface, which is the wrong direction for most back sleepers, and it warms you up.
A new mattress before you have done the hand test and checked your slat spacing. Both free.
Also considered, and why they are not here
A roundup is only as useful as what it leaves out, so here is what was assessed and rejected for this list.
| Product | Why it is not on the list |
|---|---|
| Otty Pure+ 4000 | Built for a plush surface, which suits side sleepers. A back sleeper gains less from very high spring counts. |
| Emma Original | All foam at £369. Foam conforms rather than holding the hips up, which is the wrong emphasis for back sleeping. |
| Inofia Cloud-Lux | A pillow-top adds softness through a quilted layer that wears faster than the core. The wrong direction if your hips already sink. |
| Otty Extra Firm | Excellent for heavier sleepers and front sleepers. For an average-build back sleeper it is likely to bridge the lumbar gap. |
| Purple | The coolest surface on this site. Buy it for heat, where it is unmatched, rather than for back support. |
How this list is made, and who made it
Independence
No brand pays to appear on this site and no placement is sold. Some links earn a commission if you buy, which never changes a score, an order or a verdict. Several of the lowest scores here are on products that carry commission, and several recommendations carry none.
Who writes this. Kyle Klinkradt has worked in the mattress and bedding industry for over ten years across retail, distribution and brand partnerships, and has handled, sold or assessed products from every major UK bed-in-a-box brand. Every review on this site is written by one person, so the scores mean the same thing from page to page.
What the assessment is. Construction specifications against what they physically do: spring height and where in the mattress it sits, spring count for the size, gauge, whether the base is sprung or foam, foam density where it is published, comfort layer depth and material. Then the commercial terms that decide what you are actually buying: trial against returns policy, guarantee length against the company's UK trading history at Companies House, and the regulatory record.
What it is not. This is not a laboratory. I do not publish pressure-mapping data or claim to have slept eight years on every mattress here, because nobody has and pages that imply otherwise are not telling you the truth. Where a judgement rests on construction rather than long-term use, the review says so.
What gets a product removed. Leaving the UK market, a specification change that makes the review inaccurate, or a corrected fact. Brands that have withdrawn are kept on the site with the score removed rather than quietly deleted, because people still search for them.
See editorial independence, corrections and the author page.
How these were chosen
Every product here has its own review on this site with a score out of 10, and the score is a judgement rather than an average. Nothing appears in a list because it pays more.
A score is against the market, not against its own range. The cheapest mattress in a lineup is usually priced to make the model above it look reasonable, and the flagship of a budget range has risen into a bracket where better brands compete. Both are judged against what else you could buy for the money.
Everything listed can actually be bought in the UK. That is not a given: Casper withdrew in July 2020 and Leesa no longer sells here, and both still appear in current British roundups with affiliate links attached.
I do not pad the list. Where only three or four products genuinely qualify, there are three or four. A list of seven when the category contains four good ones is a list with three bad recommendations in it.
Prices move constantly. Judge the cash price on the day rather than any percentage beside it. See every review on this site or where the real savings are.
Questions people ask
What firmness is best for back sleepers?
Generally 6 to 8 out of 10, softer under about ten stone and firmer with more depth over fifteen. The aim is a surface that fills the hollow under your lower back rather than bridging from shoulders to hips.
How do I know if my mattress is too firm?
Lie on your back and slide a flat hand into the gap under your lower back after ten minutes. If it slides in easily with room to spare, the mattress is bridging your lumbar hollow rather than filling it.
What pillow height do back sleepers need?
Medium: enough to fill the hollow at the back of the neck without pushing the head forward. A small pillow or rolled towel under the knees also takes tension off the lower back and costs nothing to try.