Silentnight Comfortable Foam Mattress
- Room to sleep apart, together: At 75cm each for two people sharing, you can stretch out without negotiating territory in the night.
- Foam that keeps the peace: Soft foam absorbs movement well, which means a partner getting up hours before you is far less likely to wake you.
- Extra length for taller sleepers: The UK king is 10cm longer than the UK double, a real difference if one of you is approaching six foot.
- A gentle feel across a bigger surface: The soft, sink-in comfort suits side sleepers, and in a UK king there's space to curl up wherever you like.
- A budget route to a bigger bed: Sizing up usually costs more, but this mattress keeps the UK king within reach for a first proper upgrade.
This size suits you if...
You share the bed every night and a double has started to feel cramped, especially if one of you gets up much earlier than the other and you'd rather sleep through it. It also fits if either of you is tall enough to hang off a standard-length mattress, or if a dog has quietly claimed a share of the bed and you'd like your half back.
Consider another size if...
Your bedroom is smaller than the 2.7m x 2.9m we suggest for a UK king, or you sleep alone and don't need the width. We'd recommend the UK double instead, which needs at least 2.6m x 2.8m.
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Is the Silentnight Comfortable Foam in a UK king good for couples?
Yes, with one condition. The 150 x 200cm surface gives 75cm each for two people sharing, and the foam absorbs movement well, so different sleep schedules are less of a problem. The soft feel suits side sleepers and lighter bodies best, though, so a heavier partner may find it lacks support.
How long is the UK king Silentnight Comfortable Foam Mattress?
It's 200cm long, which is 10cm longer than the UK double. That extra length is often the real reason taller sleepers size up: if you're approaching six foot, your feet stop meeting the end of the bed. In imperial terms the UK king measures 5ft x 6ft 6in.
What size room do I need for this mattress in a UK king?
We suggest allowing at least 2.7m x 2.9m for a UK king, which is our own guidance rather than Silentnight's. That leaves enough space to walk round the bed and open drawers. If your room falls short, the UK double needs at least 2.6m x 2.8m and this mattress comes in that size too.
Should we buy the Silentnight Comfortable Foam in a UK king or a UK double?
The UK king is 15cm wider and 10cm longer than the UK double. Choose the UK king if you share every night, one of you is tall, or a restless partner wakes you. Choose the UK double if your room is tight or you mostly sleep alone.
Where can I buy the Silentnight Comfortable Foam Mattress in a UK king?
Compare the retailers listed on this page; the prices shown here are updated as retailers change them. Stock and pricing can differ between sizes of the same mattress, so it's worth checking the UK king specifically rather than assuming it matches what you've seen quoted for a smaller size.