Harrison Spinks Westminster 15750 Mattress
Mattress
Harrison Spinks Westminster 15750 Mattress
Size
Firmness
Construction
Depth (cm)
32
Layers
4
Layer Details
- Top comfort layer. An Egyptian cotton and flax blend that wicks away excess moisture, which means you're less likely to wake up feeling clammy. Both are naturally breathable fibres.
- Mid comfort layer. Egyptian cotton, kapok and alpaca wool work together to regulate temperature. In practice that means a cooler feel in summer and a cosier one in winter.
- Viscose wool layer. A viscose wool blend derived from the wood pulp of eucalyptus, beech and pine trees. It helps regulate temperature and promotes airflow through the mattress.
- Spring system. At the centre sits a layer of Cortec pocket springs with four layers of micro springs and micro ultra springs. Layered springs like these respond to your body in finer detail than a single spring unit, so support feels more tailored.
Layer details from mattressnextday.co.uk product page, September 2026.
- Localised support matters more when you share: The Cortec pocket spring system responds to small movements individually, which means less disturbance across a 135cm width when your partner turns over.
- Breathable fibres for two warm bodies: Sharing a double concentrates body heat, and the cotton, alpaca wool and kapok fillings wick moisture and keep air moving where it's needed most.
- A footprint most rooms can manage: We suggest a minimum of 2.6m x 2.8m, which means this size fits comfortably in rooms where a UK king would dominate.
- Bedding is cheap and everywhere: Double sheets and duvets are stocked at every price point, a small saving that softens a premium mattress purchase slightly.
- Generous for one, workable for two: Solo sleepers get the full 135cm to spread out; couples get 67.5cm each, enough for most, though restless pairs may want more.
This size suits you if...
You share a bed every night in a typical UK bedroom and want bedside tables on both sides without squeezing past the footboard. Or you sleep alone, perhaps with a dog or cat claiming a corner, and want proper room to stretch on a mattress built to last. It also suits a guest room that hosts visiting couples, where a premium mattress makes staying over genuinely comfortable.
Consider another size if...
You and your partner both like space and your room measures at least 2.7m x 2.9m. In that case we'd recommend the UK king instead: it's 15cm wider and 10cm longer than the UK double.
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How big is the Harrison Spinks Westminster 15750 in a UK double?
The UK double measures 135 x 190cm, or 4ft 6in x 6ft 3in. That's the traditional couples' size in Britain, and at 32cm deep this is a tall mattress, so allow for deep fitted sheets and check the finished bed height against your headboard.
How much space do two people get on the UK double Westminster 15750?
Two people sharing get 67.5cm each. That's enough for most couples, and the layered micro springs limit how much you feel a partner moving. If one of you is broad-shouldered or you both sprawl, the UK king adds 15cm of width and 10cm of length.
What size bedroom do I need for the Westminster 15750 in a UK double?
We suggest at least 2.6m x 2.8m, which allows walking space around the bed and room for a wardrobe and drawers. That guidance is ours, not Harrison Spinks'. In a second bedroom or a first flat, the UK double usually fits where a larger size would crowd the door swing.
Will the UK double Westminster 15750 get up my stairs?
A traditional pocket sprung mattress with natural fillings like this arrives flat rather than rolled, so measure your stairway turns and landings before ordering, particularly in older terraces or new builds with tight landings. The mattress is 135cm wide and 32cm deep, which is the awkward dimension on a corner.
Is the Westminster 15750 UK double right for a guest room?
It's a strong choice if visiting couples stay often, since the double sleeps two comfortably in a room a UK king might overwhelm. The Medium Firm feel suits most guests, although lightweight side sleepers may find it slightly firm. For a room used only occasionally, it's a generous spend.