Arthur Sleep Spare Arthur Mattress
Mattress
Arthur Sleep Spare Arthur Mattress
Size
Firmness
Medium Firm
Construction
Depth (cm)
Layers
Layer Details
- Independent support for two: Pocket springs respond to each sleeper separately, which means one of you turning over is less likely to disturb the other on a shared double.
- Fits the typical UK bedroom: At 135 x 190cm, the UK double leaves space for bedside tables on both sides in most rooms, where a UK king often forces a choice.
- Sensible pick when money is spread thin: If you're furnishing a whole home at once, a straightforward pocket spring double keeps one big purchase manageable without dropping to a foam-only budget option.
- An easy guest room choice: Its medium firm feel sits in the middle ground, which suits a spare bedroom where visiting couples arrive with different preferences.
- Bedding is cheap and everywhere: Double sheets and 200 x 200cm duvets are stocked at every price point, so dressing this size costs less than kitting out larger beds.
This size suits you if...
You share the bed every night and your room sits around the typical UK size, where a double leaves walking space and a king would dominate. It also works if you're setting up a guest room for visiting couples, or buying several beds at once and want a dependable sprung mattress without stretching the budget on one room.
Consider another size if...
You and your partner both like room to spread out, since 67.5cm each for two people sharing is snug for restless sleepers. We'd recommend the UK king instead, which is 15cm wider and 10cm longer; allow at least 2.7m x 2.9m for it.
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Is the Spare Arthur UK double big enough for a couple?
For most couples, yes. The UK double is the traditional shared size in Britain, and the Spare Arthur's pocket springs mean each of you is supported individually. That said, it gives 67.5cm each for two people sharing, so if either of you sleeps sprawled or you share with a pet, the UK king is the roomier option.
What are the dimensions of the Spare Arthur mattress in a UK double?
The UK double measures 135 x 190cm, which is 4ft 6in x 6ft 3in. Arthur Sleep doesn't publish a depth for this mattress, so if the mattress height matters for your bed frame or fitted sheets, check with the retailer before ordering.
What room size do I need for a double Spare Arthur?
We suggest a room of at least 2.6m x 2.8m, with around 3m x 3m the comfortable norm. That allowance leaves you space to walk round the bed and, in most rooms, fit bedside tables on both sides. These figures are our own guidance rather than Arthur Sleep's.
Should I buy the Spare Arthur in a UK double or a UK king?
It comes down to your room. The UK double is 15cm narrower and 10cm shorter than the UK king, so it suits rooms below the 2.7m x 2.9m we'd suggest for a king. If your bedroom clears that and you share the bed, the extra width of the UK king is usually money well spent.
Is the UK double Spare Arthur a good guest room mattress?
It's a sensible fit. A UK double accommodates visiting couples as well as solo guests, and the medium firm feel is a safe middle ground when you can't predict who'll be sleeping on it. The modest price also makes it easier to justify for a bed that's used a few weeks a year.