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Arthur Sleep Rock Arthur Mattress

4.8/5
iconSoft Foam
icon800 Pocket Springs
icon23cm depth
  • Luxury Knitted Soft-touch Cover
  • Soft Comfort Foam
  • Supportive pocket spring system
  • Vacuum Packed for Easy Moving
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£175
Firmness: Extra Firm
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Description
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10 Year Warranty
Flexible Credit Options
The Verdict

What 82 sleepers really think

Rated 4.8/5 from 82 verified reviews
Reviewers praised the Arthur Sleep Rock Arthur for its firm support, which many found beneficial for back issues. The mattress is described as very firm, sturdy, and comfortable, offering excellent support. Customers appreciated the relief it provided from back pain and noted its good value for the price. A few users mentioned the heaviness of the mattress and advised it might be firmer than expected, especially for side sleepers.

AI-generated from the text of customer reviews

Why This Mattress

Why buy the Arthur Sleep Rock Arthur Mattress?

Every mattress is different. Scan for the ones that sound like you — if two or more fit, this is your mattress.

Best For
Back Sleepers
Sleep flat on your back?
Even, consistent support that keeps your spine in a natural position when lying on your back.
Helps with
Disturbance
Partner tosses and turns?
Springs that move independently absorb motion, so a restless partner is far less likely to wake you.
Helps with
Allergies
Wake up itchy or sneezy?
Hypoallergenic fillings and covers help keep dust mites and allergens at bay - ideal for allergy-prone sleepers.
Helps with
Pressure Relief
Achy hips or shoulders?
Cushioning comfort layers spread your weight evenly, easing pressure around hips and shoulders.
Helps with
Back Pain
Achy back in the morning?
A supportive, orthopaedic-grade build helps keep your spine aligned and takes the strain off your back.
Thermal Control
All Season
Hot in July, cold in January?
A balanced build that doesn't run hot in summer or cold in winter, so it works all year round.
Helps with
Anti Bacterial
Freshness a priority?
A treated finish that stops bacteria building up, keeping things fresher and more hygienic for longer.
Helps with
Anti Microbial
Musty smells worry you?
Resists the microbes that cause mould and odours, helping the sleep surface stay clean and fresh.
Suitability
Adults
Buying for a grown-up bed?
Built for full-grown sleepers, with the depth and support to take adult weight night after night.
How It Feels

How firm is it?

Extra Firm

Extra Firm is the level of support to the body, suitable for extra heavily weighted people. This is not a comfort rating.

About the Brand
★ 4.83 brand rating

Arthur Sleep is an exclusive brand offering convenient, low-maintenance mattress solutions for all sleepers. With innovative pocket sprung and memory foam hybrids, they prioritize comfort and support. Featuring 100% hypoallergenic materials and a Which? Best Buy endorsement, Arthur Sleep ensures quality and restful nights for years.

View all Arthur Sleep
Real Sleepers

What our customers say

4.8
Product Rated 4.8 Stars
82 reviews
Average Customer Ratings
Comfort4.8
Durability4.8
Quality4.8
Value for money4.8
Rating Snapshot
5 stars
72
4 stars
4
3 stars
6
2 stars
0
1 stars
0
Excellent72
Great4
Average6
Laura Gulaszewska
Customer Rated This 5 Stars 5/5
29 Jan 2026
Omg... I never knew I'm going to love the mattress for SUCH A BARGAIN PRICE that much... First of all it took me over a year to finally choose and buy a mattress. I was looking at the price range from 500-1500 gbp. I wanted firm or super firm since I have a back and neck pain. By accident, the mattressman website came up with winter sale and I saw this one. ROCK ARTHUR. YEA... i would rather say King Arthur. It surprised me with a price (125) but also with many positive reviews from people who stopped suffering from pains. I ordered, with a 90 nights try and a protector, just in case I need to return. I unpacked, touched, lied on it... And omg I knew I'm not going to return this one. ABSOLUTELY WONDERFUL, HARD BUT NOT IN THE UNCOMFORTABLY HARD WAY THAT I THOUGHT. it's been over a week now. My back pain is gone. My neck and head ache is gone. I can't wait, like, literally can't wait to go to sleep every night. I love this mattress. Could give it 100 stars if possible. I only regret I didn't know that earlier.
Value5
Durability5
Quality5
Comfort5
J Baxter
Customer Rated This 5 Stars 5/5
20 Mar 2026
Now then, if you're looking for a bed that doesn't mess about, this Author Rock mattress is a champion choice. Here’s the lowdown after a month of use: The Verdict: Proper Firm If you like a mattress with a bit of backbone, this is the one for you. It’s proper firm—solid as a stone wall—which is exactly what I was after. For the brass it costs, the value is grand; you’d be hard-pressed to find something this sturdy without paying a fortune. Support & Comfort Edge Support: It’s reet solid. You can sit right on the edge to put your socks on without feeling like you’re going to slide onto the floor. The Setup: Because it’s so firm, I’ve paired it with a topper. It just adds that little bit of extra comfort while keeping the support underneath. It’s a winning combination. Durability I can’t tell you if it’ll still be going strong in ten years' time as I’ve only had it a month, but first impressions are spot on. It feels like a quality bit of kit that’s built to last.
Quality5
Comfort4
Value5
Jenny Stubbs
Customer Rated This 5 Stars 5/5
17 Jan 2026
The absolute best mattress I have ever slept on. My body likes a firm mattress as a stomach sleeper. I wake up without any aches. I can also not really notice my partner moving in bed. I was worried when it arrived rolled up in a box that I’d ordered something too thin and soft but I needn’t have been. I can not wait to get into bed again at night and am sleeping so well. When it is time to replace my teen son’s mattress, I’ll be replacing with one of these.
Value5
Quality5
Comfort5
Andrew Sinden
Customer Rated This 5 Stars 5/5
12 Dec 2025
We were after a very firm, orthopaedic mattress and the Rock Arthur is exactly that. Super firm and perfect for back sleepers who want a good nights sleep on a firm mattress. Delivery was also spot on. I’m disabled and couldn’t move the old or new mattresses. The delivery guys removed the old one and set up the new one for me - great service!
Comfort5
Value4
Quality5
Sarah Tomlinson
Customer Rated This 5 Stars 5/5
29 Jul 2025
This was the third mattress we ordered as we had issues with others. This was the cheapest out of them all, the easiest to get up two flights of stairs and the quickest delivery. Very comfortable too. We ordered the extra firm. We thought we would need toppers however I love the way it feels on my body. I would recommend.
Comfort5
Value5
Quality5
Durability5
Deborah Adams
Customer Rated This 5 Stars 5/5
07 Feb 2025
Only had the mattress for a week. I have it on a 60 day sleep trial. So far I am very impressed with it. It is extra firm., Its a heavy mattress which is a good sign. Anyway so far so good, I will know by the end of the sleep trial if its as good as I hope., maybe review it properly then
Value5
Comfort5
Quality5
Viewing 1 to 6 of 82
Our Promise

The Rock Arthur Mattress has

A 60-night sleep trial Sleep on it at home — love it, or exchange it between nights 30 and 60.
A 93% keep rate Not a survey — our own order data, updated weekly.
A 10 year warranty See exactly what's covered, and for how long.
Price Match Promise Seen it cheaper somewhere else? We'll match it.

60-night sleep trial: exchanges only, not refunds. Activated by purchasing a mattress protector at the point of order. Request your exchange between nights 30 and 60 of the trial; a £50 exchange fee applies. Full terms.

Keep rate: the share of this product's delivered orders in the last 6 months that were kept rather than returned. Updated weekly, rounded down, capped at 99%, and only shown where we have at least 30 delivered orders.

Recommendation rate: the percentage of verified Trustpilot reviews for this product with a rating of 4 stars or more, rounded down.

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