Relyon Chelsea 1500 Memory Mattress
Mattress
Relyon Chelsea 1500 Memory Mattress
Size
Firmness
Medium Firm
Construction
Depth (cm)
27
Layers
3
Layer Details
- Knitted Cover. A soft knitted cover that's breathable, which means heat can escape rather than building up. That helps keep you at a more even temperature through the night.
- Memory Foam. Memory foam, originally developed by NASA, moulds to your body as it warms. You'll feel a gentle, contouring hug that supports your spine and eases pressure points.
- 1500 Pocket Springs. Each of the 1500 springs sits in its own fabric pocket, so they respond independently to your body. That means more targeted pressure relief and less disturbance from a partner's movement.
Layer details from mattressnextday.co.uk product page, September 2026.
- A shared size that leaves room for the rest of the bedroom: At 135cm wide the UK double fits where a UK king would dominate, so a wardrobe and chest of drawers can still breathe.
- 1500 pocket springs matter more when you share: Each spring responds independently, which means a partner turning over on their 67.5cm of mattress disturbs your side far less.
- Memory foam suits two different sleepers: The foam moulds to each body separately, so a lighter side sleeper and a heavier back sleeper can share without compromising on feel.
- Bedside tables on both sides usually still fit: In a room at or above our suggested 2.6m x 2.8m, a UK double normally leaves space for a table each side.
- Easy to dress on any budget: Standard double sheets and duvets are sold everywhere at every price point, useful if you're furnishing a whole home at once.
This size suits you if...
You share the bed most nights and want the traditional couples' size in a room that meets our suggested 2.6m x 2.8m minimum, you're kitting out a first flat where the bed has to share floor space with a wardrobe and drawers, or you sleep alone and want space to spread out, perhaps with a dog or cat claiming a corner.
Consider another size if...
You and your partner both want more personal space than 67.5cm each and your room can take a bigger bed. We'd recommend the UK king instead, which gives 75cm each; allow at least 2.7m x 2.9m for it.
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Is the Relyon Chelsea 1500 in a UK double big enough for a couple?
For most couples, yes. You each get 67.5cm of the 135cm width, and the 1500 pocket springs respond independently, so one person shifting position transfers less movement across the bed. If either of you is broad shouldered or a restless sleeper, the UK king gives 75cm each, which is 7.5cm more per person.
What room size do I need for the Relyon Chelsea 1500 double?
We suggest a minimum of 2.6m x 2.8m, with around 3m x 3m the comfortable norm. At the minimum you can usually still walk both sides of the bed and fit bedside tables, which is one reason the UK double remains the default choice for typical UK bedrooms.
Should I choose the Relyon Chelsea 1500 in a UK double or a UK king?
It mostly 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 suggest for a king. If you have the space and share every night, the extra 7.5cm each on the UK king is a genuine comfort gain.
Will a UK double mattress fit up a narrow staircase?
Usually, since a hybrid like this flexes a little, but the 135 x 190cm footprint can be awkward on turning stairs in older terraces or tight new build landings. Measure your stairwell, banister gaps and door frames before ordering, and check delivery access details with the retailer listed on this page.
How much does the Relyon Chelsea 1500 double cost?
Prices change often, so we don't print a fixed figure here. The live comparison table on this page shows the current UK double price and is updated as retailers change theirs, so check it rather than relying on an older listing you may have seen elsewhere.