Arthur Sleep Spare Arthur Mattress

Assessed from the specification published by Mattress Man, captured September 2026, and from regular price comparison across our UK retail partners.

If you want a pocket spring mattress at a modest price without wading through marketing jargon, the Spare Arthur is an easy shortlist candidate. Its medium support tension should suit most sleeping positions, although anyone who prefers a very firm or very soft feel may want to look elsewhere. Buying through Mattressman brings some reassurance: they list a 60-night trial, free next day delivery with 1 to 3 days transit time, and old mattress removal as a service. Bear in mind those are the retailer's own terms, not the manufacturer's, so they apply if you buy from Mattressman specifically. It's a low-risk way into a sprung mattress.

Budget buyers
Described as a sensibly priced pocket spring option at a modest price, it gives cost-conscious shoppers a straightforward way into a sprung mattress.

Combination sleepers
Medium firm support tension should suit most sleeping positions, which means changing between your back, side and front shouldn't feel out of place.

Guest rooms
A medium firm feel that suits most sleeping positions, plus five sizes from single to super king, makes it easy to fit to a spare room.

Couples
Sizes run up to super king, and the middle-ground medium firm tension should suit two people who sleep in different positions.

If you need detailed specs before buying, such as spring count, depth or certifications, this listing doesn't provide them. It's also not the one for sleepers who want a distinctly firm or plush feel, since its medium support tension sits in the middle ground.

How firm is the Arthur Sleep Spare Arthur mattress?

Its Mattressman listing describes it as a medium support tension, a middle-ground feel that suits most sleepers. If you're a heavier person who prefers a firmer surface, or a lightweight side sleeper wanting something plush, it may not be the ideal match.

What sizes does the Spare Arthur mattress come in?

It's available in five UK sizes: single, small double, double, king and super king.

Does the Spare Arthur mattress come with a trial?

Mattressman offers a 60-night sleep trial. That's the retailer's own offer rather than a manufacturer promise, so check the terms wherever you buy.

How quickly can the Spare Arthur mattress be delivered?

Mattressman lists free next day delivery, with a transit time of 1 to 3 days. They also offer old mattress removal as a service. These are the retailer's own delivery terms, so they apply when buying through Mattressman.

What is the Spare Arthur mattress made of?

It combines pocket springs with foam layers. The springs move independently, which means better support where your body needs it and less disturbance from a partner, while the foam adds surface comfort. Detailed construction, such as spring count or depth, isn't published on the listing.