Arthur Sleep Royal Arthur Mattress
The Royal Arthur from Arthur Sleep is a pocket spring mattress with 3,000 springs, which means each spring moves independently, so you get support that follows your shape rather than a rigid, uniform surface.
- Support adjusts to hips & shoulders
- Firm feel for back & front sleepers
- Minimises partner disturbance
£635
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The Royal Arthur comes in a firm tension, so it suits people who like a solid, supportive feel underneath them rather than a soft sink-in surface. It's available in UK Single, Double, King and Super King. Mattressman lists free next day delivery and a 60-night trial on its own terms.
Mattress specifications
Firmness
Firm
Type
Pocket Spring
Depth (cm)
Number of Layers
2
Trial Period (nights)
60
Warranty (years)
Price Range
£635 to £948
Best Sleeping Position(s)
Back Sleeping
Stomach Sleeping
Certifications
Assessed from the specification published by Mattress Man, captured September 2026, and from regular price comparison across our UK retail partners.
Why should you choose this mattress?
The main draw here is the spring count. With 3,000 pocket springs, the Royal Arthur offers more precise contouring than mattresses with fewer, larger springs, which means less motion transfer if you share a bed and support that adjusts to your hips and shoulders separately. The firm tension will appeal if you sleep on your back or front, or simply prefer a firmer bed. It sits at a reasonable price for this spring count, with limited published detail on the exact construction. If you buy through Mattressman, they list a 60-night trial and free next day delivery, plus old mattress removal as one of their services.
Key features & layer details
Gel foam comfort layer
A layer of gel foam sits at the top as the comfort and filling layer. Gel foam is associated with cooling comfort, which suits you if you tend to feel the heat at night.
3000 pocket springs
The support system is made up of 3,000 pocket springs, each working on its own. That lets the mattress respond to your body shape, and it gives the firm, supportive feel the Royal Arthur is built around.
Layer details from mattressman.co.uk and arthursleep.co.uk product pages, October 2026.
Best suited for?
Back sleepers
The firm tension gives a solid, supportive feel underneath you, which suits lying on your back without sinking into a soft surface.
Front sleepers
A firm tension keeps your body sitting on top of the mattress rather than sinking in, which is what many people who lie on their front prefer.
Couples
With 3,000 pocket springs working independently, there is less motion transfer, so you are less likely to feel your partner move during the night.
Heavier sleepers
The firm tension and high count of 3,000 pocket springs give a supportive base that adjusts to your hips and shoulders separately.
This is a firm tension mattress, so lightweight side sleepers may find it a little too unyielding at the shoulder and hip. If you want detailed information about foams, fillings or mattress depth before buying, the published specs here are slim: beyond pocket springs, the materials aren't itemised.
Save on an earlier or ex-display model
Some retailers still sell the earlier version of this mattress, or ex-display and returned stock at a lower price. These are the sizes where it costs less than the current model's best price.
Arthur Sleep Royal Arthur Mattress
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FAQ's
How firm is the Arthur Sleep Royal Arthur mattress?
It's listed as a firm tension. That generally suits back and front sleepers, and heavier builds who need extra pushback. Lightweight side sleepers may find it slightly too firm for comfortable pressure relief at the shoulder.
How many springs does the Royal Arthur mattress have?
It contains 3,000 pocket springs. Each spring is sewn into its own fabric pocket and compresses independently, which means the mattress responds to your body shape and limits movement transferring across the bed to a partner.
Does the Royal Arthur mattress come with a trial period?
Mattressman lists a 60-night trial. That's the retailer's own offer rather than a manufacturer guarantee, so check the terms at the point of purchase before you buy.
What sizes does the Royal Arthur mattress come in?
It's available in UK Single, Double, King and Super King.
How quickly can the Royal Arthur mattress be delivered?
Mattressman lists free next day delivery, with a handling time of 0 to 1 day and transit of 1 to 3 days. They also mention old mattress removal as a service. These are the retailer's terms, not the brand's.
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