Silentnight UltraGel 1000 Pocket Pillowtop Mattress
Mattress
Silentnight UltraGel 1000 Pocket Pillowtop Mattress
Size
Firmness
Construction
Depth (cm)
29
Layers
3
Layer Details
- Gel-infused comfort layer. A gel-infused foam layer that responds as you move, paired with breathable foam. In practice this means a responsive, slightly bouncy feel rather than the slow sink of traditional memory foam.
- Plush pillowtop. A soft pillowtop stitched to the surface for that sink-in feel. This is what gives the mattress its cushioned, medium soft character.
- Mirapocket springs. 1000 Mirapocket springs, each housed in its own fabric pocket so they move independently. Silentnight says the zoned design is scientifically proven to improve spinal alignment and posture, which you'll feel as firmer support where your body is heaviest.
Layer details from silentnight.co.uk product page, September 2026.
- 75cm each for two sharers: Each of you gets 75cm of width, so shoulders and hips can settle into the soft pillowtop without either sleeper drifting into the other's half.
- Less disturbance on different schedules: If one of you gets up hours before the other, the 1000 individual pocket springs and the extra distance between you keep early alarms from travelling across the bed.
- 200cm of length for taller sleepers: At 6ft 6in long, the UK king adds headroom for anyone approaching six foot, useful on a soft surface where feet otherwise hang off the end.
- Room for a bed-sharing dog: A softer mattress plus a dog claiming the middle can feel crowded in a UK double; the wider UK king absorbs that intrusion far better.
- A manageable footprint: We suggest a room of at least 2.7m x 2.9m for a UK king, a fit many master bedrooms can take without sacrificing wardrobe space.
This size suits you if...
You share the bed every night and want more personal space than a UK double gives, especially on a soft, sink-in surface where you feel a partner's presence more. It also suits you if one of you is close to six foot and needs the 200cm length, or if your sleep schedules rarely match and reduced disturbance is the goal.
Consider another size if...
Your bedroom falls short of our suggested 2.7m x 2.9m minimum, or you sleep alone. We'd recommend the UK double instead, which needs a slightly smaller room at 2.6m x 2.8m. If space is generous and you want maximum separation, the UK super king is 30cm wider.
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Is a UK king big enough for a couple on this soft a mattress?
Yes, for most couples. The 150cm width gives you 75cm each, and because the medium soft pillowtop lets you sink in a little, that separation stops you rolling towards each other. The 1000 pocket springs move independently too, so one sleeper shifting position transfers less across the surface than a wider, softer bed might suggest.
How much bigger is the UK king than the UK double for this mattress?
The UK king is 15cm wider and 10cm longer than the UK double, at 150 x 200cm against 135 x 190cm. The width is what you notice night to night when sharing, while the extra length matters if either of you is tall. Allow at least 2.7m x 2.9m of room for the UK king.
Will the UK king suit a sleeper over six foot?
The 200cm length, 10cm more than a UK double, is the quiet advantage here. On a medium soft pillowtop you settle into the surface rather than perching on top of it, so having your feet clear of the end makes a real difference to how the softness feels through the night.
Do I need to size up to a UK super king instead?
Only if your room can take it. The UK super king is 30cm wider than the UK king and the same length, and we suggest at least 3m x 2.9m for it. If you share with a restless partner or a dog and have the space, it helps; for most couples the UK king is the sensible middle ground.
Where can I find the best price on this size?
Prices for the Silentnight UltraGel 1000 Pocket Pillowtop in a UK king move around, so compare the retailers listed on this page. The prices shown here are updated as retailers change them, which is more reliable than any figure we could print in the text.