Relyon Hand Crafted Sublime King Size Mattress
The Relyon Hand Crafted Sublime is a pocket spring mattress built around twin-layer pocket spring technology, with 2400 individually moving springs in total, each nested in its own fabric pocket.
- Eases pressure at shoulders & hips
- Firmer support under your lower back
- Minimises partner disturbance
£3,781.65
Get the lowest price we've found
Save with the previous model
Some retailers still sell the earlier version of this mattress for less than the current model's best price.
Relyon Hand Crafted Sublime Mattress
More available sizes
Mattress details
Mattress
Relyon Hand Crafted Sublime Mattress
Size
Firmness
Construction
Pocket Spring
Depth (cm)
Layers
2
Layer Details
Pocket Springs
The first layer contains individually moving springs, each nested in its own fabric pocket, which means every spring compresses on its own rather than pulling its neighbours with it. You feel this as support that follows the shape of your body and less disturbance from a partner's movement.
Pocket Springs
A second layer of pocket springs sits as part of the twin-layer design, adding a further level of independent response. The retailer's listing gives a total of 2400 springs across the mattress but doesn't specify how they're split between the two layers.
Layer details from mattressman.co.uk product page, September 2026.
Key benefits
- 75cm each for two sharing: Two people get 75cm of width apiece, enough to change position at night without negotiating for territory.
- Movement stays on their side: The 2400 pocket springs compress individually, so a partner leaving for an early shift is less likely to wake you as they get up.
- Length for taller sleepers: At 200cm long, the UK king adds 10cm over the UK double, a real difference if one of you is approaching six foot.
- A clear step up from a double: The UK king is 15cm wider than the UK double, giving each sleeper 7.5cm more, which you notice every night rather than only on paper.
- Room to accommodate a routine guest: If the dog treats the foot of the bed as its own, the extra width means you're less likely to end up sleeping around it.
This size suits you if...
You share the bed every night and a double has started to feel cramped, you or your partner keep different hours and want the pocket springs' independence to have room to work, or one of you is tall enough that a standard 190cm mattress leaves feet at the edge. Your bedroom can also spare at least 2.7m x 2.9m, which is the minimum we'd suggest for a UK king.
Consider another size if...
Your bedroom falls short of the 2.7m x 2.9m we suggest for a UK king, perhaps a new build master that shrinks once wardrobes go in. We'd recommend the UK double instead, allowing at least 2.6m x 2.8m.
Similar Mattresses in This Price Range
Did you know? On Mattress Unboxed we have over 1,000 different mattresses to suit all types of sleepers. View all mattresses.
FAQ's
Is the Relyon Hand Crafted Sublime UK king big enough for a couple?
Yes, comfortably for most. Two people sharing get 75cm of width each, which is 7.5cm more apiece than the UK double offers. Combined with the 2400 individually pocketed springs, which respond to each sleeper separately, most couples find they disturb each other noticeably less than on a smaller sprung mattress.
What room size do I need for the UK king Relyon Hand Crafted Sublime?
We suggest a minimum of 2.7m x 2.9m, with 3.2m x 3.2m feeling comfortable. That allows walking space around the 150 x 200cm mattress and room to open drawers or wardrobes. Measure with furniture in place: rooms that look generous empty can tighten quickly once wardrobes are in.
Should I choose this mattress in a UK king or a UK super king?
The UK king is 30cm narrower than the UK super king, and both are the same 200cm length. The UK super king gives 90cm each for two sharing, 15cm more per person, but needs a room of at least 3m x 2.9m. If your bedroom can take it and space is the priority, size up; otherwise the UK king suits most couples.
How much bigger is the UK king than the double in this mattress?
The UK king is 15cm wider and 10cm longer than the UK double. Per person, that works out at 7.5cm more width each for two sharing. The extra 10cm of length is the quieter benefit: at 200cm, taller sleepers stop feeling their feet reach the edge of the mattress.
Is the UK king long enough if my partner is over six foot?
At 200cm, or 6ft 6in, the UK king gives someone over six foot several inches of clearance, where a 190cm mattress can leave feet at the very edge. If length is your main reason for upgrading, the UK king delivers it without the wider footprint of the UK super king, which is the same length.