You’ve been waking up with a sore lower back for months, rolling onto your partner’s side of the bed because the middle has sagged into a valley, and the memory foam mattress you bought three years ago now feels like sleeping in quicksand. Sound familiar? Pocket sprung mattresses are the antidote — individual springs wrapped in fabric pockets that move independently — a construction that Which? rates highly for support and motion isolation, so you get proper support without that sinking feeling. Finding the best pocket sprung mattress UK buyers can actually trust means cutting through the marketing fluff about spring counts and comfort layers. Here’s what we found after testing the top options.
What Makes Pocket Sprung Different From Open Coil
Before we get into specific mattresses, it’s worth understanding why pocket sprung is worth the upgrade from cheaper alternatives.
Open coil mattresses — the Bonnell spring type you’ll find in budget options at Argos — use interconnected springs. Push down in one spot and the whole surface dips. Roll over in the night and your partner feels every movement. They’re fine for a spare room, but for nightly use they wear unevenly and start sagging within a couple of years.
Pocket sprung mattresses wrap each spring in its own fabric pocket. They compress independently, so your shoulder sinks while your hip gets firm support, and your partner doesn’t feel you moving. The spring count matters, but it’s not the whole story — a 1,000 spring mattress with high-quality steel can outperform a cheap 2,000 spring mattress with weak tension. We’ll get into spring counts shortly.
If you’re unsure whether pocket sprung is right for you, our complete mattress guide covers every type side by side.
How We Tested
We spent four weeks sleeping on pocket sprung mattresses across a range of budgets, firmness levels, and spring counts. Each mattress was tested by two sleepers — a side sleeper (around 65kg) and a back sleeper (around 85kg) — on a slatted bed frame. We assessed:
- Motion isolation — could you feel your partner rolling over?
- Edge support — did the mattress collapse when sitting on the edge?
- Temperature regulation — did it sleep hot or stay neutral?
- Pressure relief — any aching hips or shoulders after a full night?
- Durability indicators — spring gauge, comfort layer quality, cover construction
We also factored in UK customer reviews, trial periods, and warranty terms. Every price listed is what UK buyers actually pay, not an RRP that nobody charges.
Best Overall: Simba Hybrid Pro (about £999 for King)
The Simba Hybrid Pro combines 5,000 titanium alloy micro springs across two layers with a memory foam comfort layer that doesn’t trap heat the way pure foam mattresses do. It’s the mattress we’d buy with our own money if we could only pick one.
Why it stands out: The dual spring layers are genuinely clever — the top layer of smaller micro springs adapts to your body shape while the base layer provides deep support. Side sleepers get excellent pressure relief at the shoulder, and back sleepers get firm lumbar support without feeling like they’re lying on a board.
The downsides: At nearly a grand for a king size, it’s not cheap. It also takes about two weeks to fully break in — the first few nights feel quite firm before the springs settle. And the cover isn’t removable for washing, which is an odd choice at this price.
Where to buy: Direct from Simba (often 35-40% off in sales), also stocked at John Lewis and Amazon UK. King size typically £999 but regularly drops to about £650 during sales. Simba runs a 200-night trial with free returns.
Best Value: Silentnight Eco Comfort Breathe 1400 (about £400 for King)
Silentnight is the mattress brand your parents probably had, and there’s a reason they’ve survived this long. The Eco Comfort Breathe 1400 hits a sweet spot of quality construction, decent spring count, and a price that doesn’t require a finance plan.
Why it stands out: 1,400 pocket springs in a king size is respectable for this price, and the Eco Comfort filling is a breathable polyester that regulates temperature better than cheap foams. It’s medium-firm — firm enough for back sleepers but with enough give for side sleepers who aren’t too heavy. The cover is hypoallergenic and the whole thing is OEKO-TEX certified.
The downsides: The comfort layers are thinner than premium options, so heavier sleepers (90kg+) may feel the springs more directly. Edge support is adequate but not spectacular. There’s no trial period unless you buy through a retailer that offers one.
Where to buy: Argos, Amazon UK, John Lewis, and directly from Silentnight. The king size hovers around £350-450 depending on sales. Silentnight offers a 5-year guarantee.
Best Premium: Hypnos Orthos Support 8 (about £1,800 for King)
Hypnos hold a Royal Warrant — they make the beds for Buckingham Palace — and the Orthos Support 8 is their firm support flagship. If you have back problems or prefer a mattress that doesn’t give much, this is the one.
Why it stands out: Built in the UK with 1,400 ReactivePocket springs and multiple layers of natural fillings including wool, cotton, and cashmere. The springs are heavier gauge than most competitors, meaning they resist compression longer and won’t sag for years. Edge-to-edge support is excellent thanks to a reinforced perimeter. This mattress feels like sleeping on something that cost £1,800 — there’s a density and solidity that cheaper mattresses just can’t replicate.
The downsides: It’s firm. If you like sinking into a soft mattress, look elsewhere. The price is steep, and Hypnos don’t run the aggressive sales that direct-to-consumer brands like Simba and Emma do. Delivery can take 4-6 weeks because each mattress is handmade to order.
Where to buy: John Lewis is the main stockist for Hypnos. Some independent bed shops carry them too. Always try before you buy at this price — John Lewis stores usually have floor models. King size around £1,600-1,900.
Best for Side Sleepers: Sleepeezee Perfectly British Strand 1400 (about £700 for King)
Side sleepers need a mattress that cushions the shoulder and hip without bottoming out at the lumbar spine. The Sleepeezee Strand walks this line well.
Why it stands out: The 1,400 pocket spring unit is wrapped in layers of natural cotton and wool, giving it a softer surface feel than many pocket sprung mattresses while maintaining firm support underneath. The springs respond well to the pressure points that side sleepers create — shoulder and hip — without the whole surface flexing. It’s hand-tufted, which helps the fillings stay evenly distributed over time.
The downsides: It’s heavy — properly heavy. You’ll need two people to flip or rotate it. The natural fillings mean it takes longer to air out when new (give it a couple of days in a well-ventilated room). No vacuum-roll delivery — this arrives as a full mattress, so check your staircase.
Where to buy: Bensons for Beds, Dreams, and some independent retailers. King size around £600-750. Sleepeezee offer an 8-year guarantee.
Best Budget Under £300: Dormeo Memory Fresh Pocket (about £270 for King)
Spending under £300 on a pocket sprung mattress usually means compromising somewhere, but the Dormeo Memory Fresh Pocket is a solid choice if budget is the priority.
Why it stands out: 800 pocket springs (lower than the others, but adequate) combined with a thin layer of Dormeo’s Octaspring-inspired memory foam. It comes vacuum-rolled, so delivery is easy. The memory foam layer is only about 2cm, so it adds a touch of pressure relief without the overheating issues of thick foam mattresses. For the price, the build quality is decent.
The downsides: 800 springs in a king is entry-level. Heavier couples will feel each other moving more than with the 1,400+ spring options. The comfort layer is thin, so this sleeps firmer than the marketing suggests. The cover is basic. It’ll last 3-5 years with nightly use, not the 8-10 you’d get from a premium option.
Where to buy: Amazon UK, Dormeo direct, and occasionally Costco. King size around £250-300. Dormeo offer a 15-year guarantee, though the terms are less generous than they sound.
How to Choose: Spring Count, Gauge, and Comfort Layers
Spring Count — The Number Everyone Fixates On
Spring counts in UK pocket sprung mattresses typically range from 600 to 6,000+. Here’s what the numbers actually mean:
- 600-1,000 springs (king size): Entry-level pocket sprung. Adequate for lighter sleepers and guest beds.
- 1,000-1,500 springs: The sweet spot for most people. Good independent movement, decent durability.
- 1,500-2,000 springs: Premium feel, excellent motion isolation, better for heavier sleepers.
- 2,000+ springs: Often uses mini pocket springs in addition to standard ones. Diminishing returns above 2,000 unless you’re a very light sleeper who notices every micro-movement.
The catch: Some brands inflate spring counts by using tiny springs or counting springs across multiple layers. A 3,000 spring mattress isn’t necessarily better than a 1,500 spring one — the spring quality and gauge matter more.
Spring Gauge — The Spec Nobody Checks
Spring gauge measures the thickness of the wire — lower numbers mean thicker, firmer springs. Most UK pocket sprung mattresses use 1.2mm to 1.6mm wire. A 1.2mm gauge spring will feel notably firmer than a 1.6mm gauge spring. If you want firm support, look for lower gauge numbers. Unfortunately, many brands don’t advertise this, so you might need to ask.
Comfort Layers — What’s On Top
The springs are only half the story. What sits above them determines how the mattress feels against your body:
- Memory foam: Conforms to your shape, good pressure relief, can sleep hot
- Latex: Bouncy, responsive, naturally cool, more expensive
- Natural fillings (wool, cotton, silk): Breathable, temperature-regulating, traditional feel
- Polyester/synthetic filings: Budget-friendly, less breathable, shorter lifespan
For pocket sprung mattresses, natural fillings or latex tend to complement the springs better than thick memory foam layers, which can muffle the spring response you’re paying for.
What About Mattress-in-a-Box Pocket Sprung Options?
The direct-to-consumer revolution brought us vacuum-rolled pocket sprung mattresses that arrive in a box. Simba, Emma, Brook + Wilde, and others all offer hybrid options combining pocket springs with foam layers.
The advantages are real: home trial periods (usually 100-200 nights), free delivery, easy returns, and lower prices because they cut out the retailer. Our Emma vs Simba vs Eve comparison covers the main boxed options in detail.
The trade-off is that vacuum-rolled springs tend to be shorter than traditional pocket springs, and the spring counts are often made up of very small micro springs rather than the full-height springs in a Hypnos or Sleepeezee. This isn’t necessarily bad — it just means the mattress feels different. More “supportive foam with springs” than “springs with a comfort layer on top.”
If you value a traditional pocket sprung feel — that bouncy, responsive surface — go for a non-rolled mattress from Hypnos, Sleepeezee, Vispring, or Harrison Spinks. If you prefer the convenience and trial period, the boxed hybrids are excellent and improving every year.
Firmness: How Firm Should Your Mattress Be?
Firmness is subjective, but here’s a rough framework:
- Soft to medium (3-5 out of 10): Best for lightweight side sleepers under 65kg who want deep contouring.
- Medium (5 out of 10): The most popular choice. Works for most body types and sleeping positions. If in doubt, go medium.
- Medium-firm (6-7 out of 10): Good for back sleepers and heavier individuals who need more support.
- Firm (7-8 out of 10): Best for stomach sleepers and those with specific back support needs. Not for everyone.
Your mattress foundation affects firmness too — a sprung divan will add a softer feel compared to a firm slatted frame. And if you’re unsure about whether your current mattress needs replacing or just maintenance, check our guide on whether you need to flip your mattress.
Head-to-Head: Simba Hybrid Pro vs Silentnight 1400
These two are the most common choices UK buyers compare, so let’s settle it.
Simba Hybrid Pro wins on: spring count (5,000 vs 1,400), motion isolation, trial period (200 nights vs none), and brand cachet. It’s the mattress to buy if you can afford it and want cutting-edge hybrid technology.
Silentnight 1400 wins on: price (less than half), traditional pocket sprung feel, availability (you can try it in shops), and track record — Silentnight has been making mattresses in the UK since 1946.
Our take: If you’re spending £600+ anyway (Simba on sale), get the Simba. If your budget is firmly under £500, the Silentnight is the better buy. Both are leagues ahead of any pure foam mattress in the same price range.
Frequently Asked Questions
How many pocket springs do I need in a mattress?
For a king size mattress, 1,000-1,500 pocket springs is the sweet spot for most sleepers. This gives good independent movement and motion isolation. Lighter sleepers can get away with 800, while heavier sleepers or couples should look at 1,500+. Don’t chase the highest number — spring quality and gauge matter more than count.
Are pocket sprung mattresses good for bad backs?
Pocket sprung mattresses are often recommended for back pain because the independent springs support your body’s natural curves without creating pressure points. A medium-firm pocket sprung mattress with at least 1,000 springs provides the combination of support and conformity that physiotherapists typically recommend. If you have specific back issues, consult your GP or physiotherapist before buying.
How long does a pocket sprung mattress last?
A good pocket sprung mattress should last 8-10 years with proper care. Premium options from brands like Hypnos and Vispring can last 15+ years. Budget pocket sprung mattresses (under £300) typically last 4-6 years. Rotating your mattress every 3-4 months and using a mattress protector will extend its lifespan. Replace it when you notice visible sagging or wake up with aches that disappear during the day.
Is 2,000 pocket springs better than 1,000?
Not necessarily. A 2,000 spring mattress often uses smaller springs to achieve the higher count. If those springs are good quality with decent gauge wire, yes — you’ll get better motion isolation and finer contouring. But a 1,000 spring mattress with thick, high-quality springs can feel more supportive and last longer than a 2,000 spring mattress with thin wire. Always check the spring gauge if the manufacturer lists it.
What’s the difference between pocket sprung and hybrid mattresses?
A hybrid mattress uses pocket springs combined with a significant foam layer (usually memory foam or latex) — typically 3cm or more of foam above the springs. A traditional pocket sprung mattress uses natural or synthetic fillings above the springs instead of foam. Hybrids tend to feel softer and more conforming; traditional pocket sprung feels bouncier and more responsive. Both are excellent choices; it comes down to personal preference.
The Bottom Line
The best pocket sprung mattress UK buyers can find depends on budget and sleeping style. The Simba Hybrid Pro is our top pick for most people — it combines pocket springs with modern foam technology and comes with a generous trial period. For value, the Silentnight 1400 is hard to beat under £500. For premium traditional pocket sprung with firm support, Hypnos is the gold standard.
Whatever you choose, prioritise spring quality over spring count, check the firmness matches your sleeping position, and take advantage of trial periods where they’re offered. Your back will thank you.