Harrison Spinks Collingham 3250 Pocket Mattress

Assessed from the specification published by Mattress Online, captured September 2026, and from regular price comparison across our UK retail partners.

This mattress suits you if natural materials matter. There is no memory foam here, just wool, cotton, hemp, flax and viscose over pocket springs, which means better breathability, a real plus if you're a hot sleeper. The springs are 100% glue free and include Advanced Cortec pocket springs, and the whole thing is handcrafted in the UK by a National Bed Federation approved brand. The medium feel should suit most sleepers, although those wanting a firmer, more supportive surface may find it a touch soft. Yes, the price climbs steeply in larger sizes, but you're paying for traceable British wool and a genuinely natural build, and the starting price is reasonable for this kind of construction.

Warm sleepers
Wool in the comfort layer naturally regulates temperature, and the cotton, hemp and flax blend adds breathable padding, which means less overheating on warm nights.

Couples
Each of the 2500 pocket springs sits in its own fabric pocket and moves independently, so you feel less of your partner's movement.

Eco-conscious buyers
Traceable British wool, cotton, hemp and flax sit over glue free springs with no memory foam, giving a genuinely natural build handcrafted in the UK.

Allergy sufferers
The wool and viscose cover is fire resistant and chemical free, which means no chemical fire retardant treatments sitting against your skin while you sleep.

Side sleepers
A medium feel with wool and natural fibre padding above the springs should give shoulders and hips a little cushioning without feeling too hard.

If you want a distinctly firm mattress, this medium feel may not give you enough push-back, particularly if you're a heavier back sleeper. Equally, if you love the slow, cradling sink of memory foam, an all-natural spring mattress like this will feel springier and more traditional than you might expect.

Is the Harrison Spinks Collingham 3250 firm or medium?

The retailer's product page describes it as medium, although some other listings label it medium firm. In practice, expect a balanced feel that suits most sleeping positions, though lightweight side sleepers should find enough give from the wool comfort layer.

How many springs does the Collingham 3250 have?

The listing states 2500 high density pocket springs, each glue free and encased in its own fabric pocket, including Advanced Cortec pocket springs. Slightly confusingly, that figure differs from the 3250 in the model name, so go by the stated spring count.

Does the Collingham 3250 come with a trial period?

Mattress Online lists a 100-night trial, but this is the retailer's own offer rather than a Harrison Spinks policy, and it requires buying a mattress protector from them. If you purchase elsewhere, check that retailer's returns terms before you commit.

What is the Collingham 3250 made of?

Natural materials throughout: a wool and viscose cover, traceable British wool cushioning, and an interior blend of cotton, hemp and flax over pocket springs. There is no foam, which means a more breathable, traditional feel. It is fire resistant to BS7177: 2008 without chemical treatments in the cover.

How is the Collingham 3250 delivered?

Mattress Online offers free delivery to most locations with a two-hour time slot, including next day on weekdays, a weekday of your choice up to 60 days ahead, or weekend delivery. Standard delivery is to your front door; room of choice and old mattress recycling cost extra.