Harrison Spinks Collingham 3250 Pocket Mattress
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Mattress
Harrison Spinks Collingham 3250 Pocket Mattress
Size
Firmness
Medium Firm
Construction
Pocket Spring
Wool
Natural
Depth (cm)
22
Layers
4
Layer Details
Cover
A soft blend of wool and viscose that is fire resistant and chemical free. That means no chemical fire retardant treatments against your skin.
Comfort layer
Traceable British wool forms the soft cushioning layer. Wool naturally regulates temperature, which means less overheating on warm nights.
Interior blend
A blend of cotton, hemp and flax sits within the interior. These natural fibres add breathable padding between you and the springs.
Support system
2500 high density pocket springs, each 100% glue free and encased in its own fabric pocket, including award winning Advanced Cortec pocket springs. Individual pockets mean each spring moves independently, so you feel less of your partner's movement.
Layer details from mattressonline.co.uk product page, September 2026.
- The classic couples' fit: At 135 x 190cm, the UK double gives each sharer 67.5cm of width, enough for most couples who sleep reasonably close.
- Independent springs matter more when sharing: With 2500 glue free pocket springs each moving on its own, you'll feel less of your partner turning over, which is exactly what a shared double needs.
- Room for furniture on both sides: In an average bedroom, the UK double usually leaves space for bedside tables either side, where a UK king often forces a choice.
- Wool keeps two sleepers cooler: Two bodies generate more heat than one, and the breathable wool, cotton, hemp and flax fillings help a shared bed stay temperate overnight.
- Easy to dress: Double sheets and 200 x 200cm duvets are stocked everywhere at every price, so replacing bedding is simple and cheap.
This size suits you if...
You share the bed most nights and your room sits around the typical UK size, where a UK king would leave you squeezing past the footboard. It also suits a guest room that hosts visiting couples, since 135 x 190cm handles two adults for a weekend without swallowing the space. Solo sleepers who like to spread out, perhaps with a dog or cat claiming a corner, will find it generous too.
Consider another size if...
You and your partner both like space, or one of you is a restless sleeper. The UK king is 15cm wider and 10cm longer, and we'd recommend it if your room allows at least 2.7m x 2.9m.
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Is the Collingham 3250 UK double big enough for a couple?
For most couples, yes. The UK double gives 67.5cm each for two people sharing, and the 2500 individual pocket springs respond to each of you separately, so one person shifting position disturbs the other less. Taller or broader couples, or anyone who sprawls, may prefer the extra width of the UK king.
What room size do I need for the Collingham 3250 in a UK double?
We suggest allowing at least 2.6m x 2.8m, with around 3m x 3m the comfortable norm. That leaves walking space on both sides and, in most rooms, enough wall for bedside tables either side of the bed, something a larger size can rule out in a typical UK bedroom.
How big is the Collingham 3250 UK double in feet?
It measures 4ft 6in x 6ft 3in, which is 135 x 190cm. At 22cm deep it's a fairly standard height, so ordinary double fitted sheets should go on without a struggle, and a 200 x 200cm double duvet is the usual pairing.
Will the UK double fit up the stairs of an older terrace?
A pocket spring mattress like this arrives full size rather than rolled, so measure your staircase and any turns before ordering. The UK double's 135cm width is manageable in most homes, but tight landings in older terraces and some new builds are the point at which people wish they'd checked.
Should a couple choose the UK double or the UK king Collingham 3250?
It usually comes down to your room. The UK double is 15cm narrower and 10cm shorter than the UK king, and it fits comfortably where a king would dominate. If your bedroom offers at least 2.7m x 2.9m and you both value space, the UK king is the roomier choice; compare the retailers listed on each page for current prices.