M&S Collection 1700 Pocket Spring Medium Lambswool Mattress

M&S Collection 1700 Pocket Spring Medium Lambswool Mattress

pocket spring mattresses Medium mattresses
£599.00
sleeping cat
24p per sleep based on average mattress lifespan
Single
Small Double
Double
King Size
Super King
With Divan Bed Set
With Ottoman Bed Set
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Pros & Cons

Here we collect tests, guides and product reviews so that you can create a picture of what others think about the product. This analysis and review is based on my experience and a decade of industry insight.

  • High-quality lambswool filling for natural comfort and breathability.
  • Individually pocketed springs reduce motion transfer, ideal for couples.
  • Edge-to-edge support maximizes usable sleep surface.
  • Non-regular turn design for easy maintenance.
  • Made in the UK with a 10-year guarantee for peace of mind.
  • Some customers may find the mattress firmer than expected for a medium tension.
  • Limited availability for in-store viewing before purchase.
  • Higher price point compared to other medium mattresses.

Read why our sleep experts loved it ›

Who is it best for? powered by SnoozeScore

In our experience, the materials and construction that go into this product can make it suitable for the following people.

Combination sleeping, all positions sleeper icon
For combination sleepers
Suitable for back, stomach and side sleeping.
Reduced partner disturbance icon
Reduced partner disturbance
Pocket springs work independently to one another.
Roll together prevention
Roll together prevention
Independent springs help prevent roll together.
Sleep apnea icon
Helps those with sleep apnea
Soft and medium tensions promote side sleeping.
Snoring icon
Helps prevent snoring
Promotes side sleeping which stops snoring.
Acid reflux icon
Helps with acid reflux
When paired with a compatible adjustable bed.
Toss and turn icon
Good for those who toss and turn
Materials like memory foam can restrict movement.
snooze score logo Still not sure if the M&S Collection 1700 Pocket Spring Medium Lambswool Mattress is suitable for you? Answer 4 simple questions with our quiz Take Suitability Quiz

Testing Team Takeaways

To test the M&S Collection 1700 Pocket Spring Medium Lambswool Mattress we have people from our testing team take a closer look at the mattress and form their own opinions. Below is their observations.

Editorial Director, Mattress Expert
Becky Reeve
Editorial Director, Mattress Expert
Having had the chance to try out this mid-range mattress in the showroom, it didn't disappoint. Right off the bat, jumping onto it felt like I was being cradled by a gently fluffy cloud. As primarily a side sleeper of an average weight, the plush pillow-top sufficiently cushioned my shoulders and hips, alleviating any nagging pressure points. The distinctive combination of wool lining and ActiPro fabric had me cosy yet cool, an excellent balance for many of us hot sleepers. The standout dear to me was the pocket springs' fantastic motion isolation; the mattress absorbed every movement without any disruptions which is something I value immensely.

Tester Attributes: Side sleeper61 kgSleeps with noise machine

Why our sleep experts loved it

Jumping onto this mattress in-store felt like settling on a gently hyped-up cloud - there’s a definite plushness from the pillow-top, but it’s not the squishy flop-fest you get from ultra-soft foam beds. The top layer (a quilted pillowtop with extra mini springs) gives a soft initial hug, and that lambs wool lining adds a cosy, natural warmth. Despite the cushioning, the overall firmness is firmly in the medium range (M&S calls it “medium-tension”). In practice that means you sink in just enough at pressure points - shoulders and hips especially - without bottoming out. The memory foam layer inside moulds slightly to your body, which helps smooth out curves and prevent painful pressure spots, but it doesn’t swallow you whole. In our testing, the mattress gave a pleasant bounce-back as you shifted around - more responsive than a pure memory-foam bed, thanks to all those pocket springs, yet not so springy that you feel unstable. The knitted cover feels smooth to the touch (with a slightly cool, anti-allergy “ActiPro” fabric), so even on a quick in-store lie-down you notice it doesn’t grab at your skin. Overall, the balance of plush pillowtop and firm coil support makes for a very approachable comfort level: definitely cosy, without feeling like you’re sinking into a marshmallow.

Support and Spinal Alignment

Good spinal support is the other half of comfort, and this mattress is no slouch in the support department. The core is built around individually pocketed springs (1700 of them in a king-size), each moving independently. This means your heavier parts (say, hips or lumbar area) get firmer pushback, while lighter parts (like shoulders) sink a bit more - keeping your spine fairly neutral. In fact, mattress testers often note that a coil system with a cushioned top “promotes even spinal alignment”, and our experience aligns with that. Lying on our back and side (and even semi on the stomach), our spine stayed in a straight line - hips were well-supported, thanks to the sturdy innerspring core, and the pillowtop took the edge off any shoulder soreness. Notably, the mattress boasts edge-to-edge support, so even sitting or lying at the very edge feels solid (no rolling off the bed when you sit up for that late-night read!). In practical terms, this means you can sleep anywhere on the surface without losing support - you’re not limited to a tiny “sweet spot.” All in all, the combination of a firm coil base with a lightly cushioned top seems to handle alignment well for a medium-firm mattress (especially for back- and combo sleepers). Heavy stomach sleepers or those who demand ultra-firm support might wish for something stiffer, but for most people this strikes a nice balance.

Suitability for Different Sleep Positions

Different sleeping positions have different support needs, so we put the mattress through the paces: on our side, on our back, and (briefly, lest we spend the night at the store!) on our stomach. Side sleepers will appreciate that the soft top helps cushion the shoulder and hip. It doesn't sink like a pure memory-foam bed, but it does relieve pressure fairly well (wool + foam + springs distribute body weight evenly). In our test, lying on our side, the shoulder sank just enough into the pillowtop layer to feel cushioned, and our hips didn’t hit any hard coil - a very comfortable feeling. Back sleepers should find good lumbar support: the mattress kept our low back gently lifted, maintaining a neutral spine. The fact that pocket coils can evenly distribute weight no-matter what position you sleep in shows in practice here - our midsections didn’t dip far below the rest of the body, and firmness felt consistent. For stomach sleepers, the medium feel is a bit softer than ideal (some sink was noticeable at the pelvis), but not worryingly so. Stomach sleepers who flip onto their back (or who aren’t heavy) should still be okay. Overall, the mattress caters best to side and back sleepers - it contours and cushions moderately, without being super-soft. If you strictly sleep on your stomach every night and like a firm, flat surface, this might be just on the plush side of your liking. But for combination sleepers or couples (who naturally shift positions), it’s very accommodating.

Motion Isolation

One of the perks of pocket springs is motion control, and this mattress lives up to that reputation. With each coil encased separately, movements stay local. In our testing, when one of us shifted position or sat up on one side, the other barely felt it. The manufacturer explicitly touts “springs that reduce motion transfer so you’re not disturbed by your partner’s movements”, and in practice we found that to be true: tossing and turning on one half produced almost no ripple on the other. This aligns with industry notes that pocket springs give “superior motion isolation”. In plain terms, the bounce from a foot-flip or shift stays in the immediate area. For couples or anyone easily awakened by a jostle, this is a definite plus. We did notice only the slightest micro-vibration across the surface when our partner made a big move, which is about as good as it gets for spring-based beds. So yes, you can happily coexist with a restless sleeper without too much sleep loss.

Temperature Regulation and Breathability

The lambs wool and airflow features really shine in this medium-thick design. Wool is famous for keeping sleepers at a comfortable temperature - warm when it’s chilly, cool when it’s hot - and our brief nap on the mattress felt pleasantly neutral. It never felt sweaty-hot, even though there’s a memory foam layer (and we all know memory foam can trap heat). The mattress has eight strategic ventilation vents (two on each side) which create nice airflow through the core. We could feel a gentle breeze through these when the mattress was unwrapped - they really do help prevent heat build-up. The cover fabric is also marketed as having a cooling technology for a “fresh feel”, and it did indeed seem to dissipate warmth faster than some thick covers do (maybe a bit of marketing, but it worked). In terms of humidity, wool naturally wicks moisture away, so we suspect a damp night would be less clammy on this wool-lined top than on pure foam. Of course, very hot sleepers might still want a fan or lighter bedding, but compared to many foam beds, the combination of breathable pocket springs, wool fibre, and vents means it should stay relatively cool. In short: temperature control is above average for a mattress with foam layers, thanks to the wool and design.

Materials and Construction

This is a carefully engineered hybrid. From bottom to top, you’ve got a sturdy pocket-spring core (thousands of independent springs) and a plush sewn-on pillowtop. The pillowtop itself contains mini pocket springs, adding an extra cushiony give. Above that lies a wool layer (yes, genuine lambs wool) for softness and insulation. There’s also a thin memory foam comfort layer just under the cover, moulding to your shape. The cover fabric is quilted and uses M&S’s ActiPro anti-allergy treatment, which helps keep dust mites and allergens at bay. The sides are reinforced with three rows of stitching - a sign of durability - and four sturdy handles are sewn in for turning the mattress. Don’t overlook the eight metal grommet vents (silver-capped holes) around the sides; they’re specifically included to keep the airflow moving through the spring core. Weight-wise, it’s hefty (a 5ft model weighs about 46 kg), reflecting its solid innerspring build. Altogether, the materials suggest a mix of comfort (wool, foam, plush top) and old-school innerspring support - essentially a classic pocket-sprung mattress with a luxury topper. M&S even guarantees it against defects for 10 years, implying confidence in construction quality.

Durability and Long-Term Use

With those three rows of side-stitching and a 10-year warranty, this mattress is built for the long haul. Wool is an exceptionally durable natural fibre (it can flex thousands of times without breaking), so the lambs wool layer shouldn’t compact or degrade quickly. The springs, made in the UK, are probably high-gauge steel and should maintain their support for many years. (Industry sources note poor quality memory foam might sag in 6-8 years, but this mattress is mostly spring with only a thin foam layer, so it should avoid the worst of foam creep.) Weighing a ton - well, not literally, but nearly 55 kg for a 6ft - means it feels solid, not cheap. Of course, like any mattress, it will soften slightly with use: every first night will feel firmer than the tenth. But with regular rotation (recommended weekly at first, then every few months) and no need to flip, it should age gracefully. The warranty is industry-leading, hinting that M&S expects it to stay supportive well beyond the basic trial. In everyday terms, I’d predict this bed will last a good decade with normal care. Its construction (pocket springs + wool) is about as durable as you get without moving up to ultra-expensive handcrafted beds.

Ease of Setup and Use

This mattress is dead simple to get going - a real unbox-and-sleep piece. There’s no assembly required at all. When you buy it (online or in-store), the M&S build team will deliver it straight to your room and even unwrap it. After that, just lay it on the bed frame. It’s non-flip - so you never have to turn it over - but it does come with four loop handles (one on each side) to rotate it once in a while. We found those handles beefy and well-anchored: even lifting a queen-size (which weighs ~46 kg) was easier with them. As a simple rule, M&S says to rotate it end-to-end weekly for the first few months, then every 3-4 months after (so it wears evenly). The cover is quilted and not removable, which means you can’t wash it, but the anti-allergy fabric and wool should stay fresher than plain foam. In short: ease of use is high. Unbox the heavy mattress, grab the handles, flip it when needed, and sleep. No complex setup, no weird break-in. Even the weight isn’t a headache thanks to the handles (though I’d still recommend two people for a 6ft model!)

Value for Money

At £599 for a small double up to £799 for a super-king, this mattress isn’t bargain-basement cheap. However, given what’s inside, the price feels justified. You’re getting a fully sprung innerspring mattress (1700 springs in a king) plus natural lambs wool and a quilted foam layer - features usually found on more expensive “premium” beds. The M&S name carries a perception of quality, and the 10-year guarantee adds peace of mind. For comparison, many basic pocket-spring mattresses cost similar or more, especially with wool toppers. So this is mid-to-upper tier pricing. Considering the build quality (UK-made springs, genuine wool, delivery service, etc.), it’s a fair deal if you value those extras. You’re paying for materials like lambs wool (a luxury fibre) and the professional delivery/setup. If you were on a tight budget, you might find cheaper foam or open-coil beds, but they wouldn’t have the same longevity or motion control. Ultimately you get good bang for your buck if you prioritise comfort, support, and natural materials. For a moderately-priced mattress with a lifetime-worthy warranty and high-end features, it’s a solid value proposition.

Who This Mattress Is For

This M&S 1700-pocket spring lambs wool mattress nails the sweet spot for many sleepers: it’s cushy enough to feel cosy and supportive enough to keep spines happy. Its construction and materials give it a premium feel (and warranty), while the medium firmness broadens its appeal. If you match the profile above, you’ll likely find it a very satisfying bed. If not - for instance, if you prefer something extremely soft or have very specialized support needs - you might look elsewhere.

Summary: In short, this mattress is a top choice for couples and combination sleepers who want a balance of plush comfort and firm support, along with good temperature control. It’s particularly suited to those who value natural materials and durability. It might be a stretch for heavy stomach-sleepers or bargain-hunters, but for most people it delivers excellent feel, support, and build quality at a reasonable price.

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How does it feel?

Personalised feel depends on bodyweight. Adjust your weight below to get an indication of how the M&S Collection 1700 Pocket Spring Medium Lambswool Mattress may feel.

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Price History

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Quantitative Measurements KPI question mark
Of The M&S Collection 1700 Pocket Spring Medium Lambswool Mattress
Here's how the product performs based on the materials and composition when compared to other products of similar price point. These measurements are produced using a combination of specification-heavy algorithmic data points and our own hands on experience.

Quantitative Measurements KPI question mark

Here's how the product performs based on the materials and composition when compared to other products of similar price point. These measurements are produced using a combination of specification-heavy algorithmic data points and our own hands on experience.

Suitability

*Assuming average weight, suitability will vary dependant on body type, use the quiz above for a more tailored guide.
  • Back Sleepers
    ★★★★★
    ★★★★★
  • The amount of support offered from a mattress will vary depending on the firmness of the tension and the type of support layer used. Based on a person of average build.
  • Side Sleepers
    ★★★★★
    ★★★★★
  • If you sleep on your side you typically need a supportive tension that is not too firm, nor too soft. This is because your hips and shoulders need adequate sinkage.
  • Stomach Sleepers
    ★★★★★
    ★★★★★
  • Stomach sleepers need a reasonable amount of tension in the base support layer to adequately offer body contouring and help prevent aches and pains. Results will vary based on your build.

Performance

  • Breathability
    ★★★★★
    ★★★★★
  • Mattresses that feature breathable materials help promote airflow and keep you cool making for a more hygienic night's sleep.
  • Turning on mattress
    ★★★★★
    ★★★★★
  • Certain materials like memory foam can make it difficult to move about on the mattress while you toss and turn. Same too for pillow tops which can create a cloud like sensation which can make manoeuvrability challenging.
  • Stability
    ★★★★★
    ★★★★★
  • Depending on the type of support layer in place can have an impact on stability, edge to edge support and roll together prevention. Pocket springs of a firmer tension will have better stability than open coil soft tension, for example.

Odour

  • Initial Odour
    ★★★★★
    ★★★★★
  • Materials in mattresses, particularly memory foam and rolled bed-in-a-box mattresses can have an initial odour, this is typically short term and reduces considerably within 24 hours.
  • Long Standing Odour
    ★★★★★
    ★★★★★
  • Certain materials inside different mattresses can produce a small odour. Typically this is short term rather than long standing but there are minor exceptions.

Questions and Answers About The M&S Collection 1700 Pocket Spring Medium Lambswool Mattress

Prospective customers had the following questions about the product

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Mark56
Is this mattress suitable for side sleepers?

Answer: Yes, the medium tension and lambswool filling provide a balance of support and comfort, making it suitable for side sleepers who need pressure relief on their shoulders and hips.
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Holly VB
Does the mattress come with a trial period?

Answer: The retailer does not specify a trial period, but it does come with a 10-year guarantee covering manufacturing defects, which offers some assurance of quality.
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Yaccers
How often should I rotate the mattress?

Answer: It's recommended to rotate the mattress once a week for the first three months, and then every three months thereafter to maintain its shape and comfort.
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Mike C64
Can this mattress be used on an adjustable bed frame?

Answer: While the mattress is designed for standard bed frames, it may not be suitable for adjustable frames due to its construction and thickness.
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Miss big eyes
Is the lambswool filling hypoallergenic?

Answer: Lambswool is naturally hypoallergenic and resistant to dust mites, making it a good choice for those with allergies or sensitivities.
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Of The M&S Collection 1700 Pocket Spring Medium Lambswool Mattress
Brand: Marks and Spencer
Retailer: Marks and Spencer
Delivery Time: Good
Guarantee: Excellent

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Radar Analysis looks at the product, brand and retailer against base norms established within the industry and determines where the product sits by way of established performance metrics.

Product Relevant Videos

Hand picked video that relates to the specifications of The M&S Collection 1700 Pocket Spring Medium Lambswool Mattress

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How we reviewed this product

At WantMattress, we adhere to stringent sourcing standards, drawing from peer-reviewed research, scholarly institutions, medical associations, and firsthand accounts and experience. We refrain from using tertiary sources. To understand how we maintain the accuracy and up-to-date nature of our content, please read further about how we test.

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