Firmness
Medium
Type
Pocket Spring
Depth (cm)
Number of Layers
Trial Period (nights)
60
Warranty (years)
Price Range
£1,461 to £3,145
Best Sleeping Position(s)
Certifications
Assessed from the specification published by Mattress Man, captured September 2026, and from regular price comparison across our UK retail partners.
Pocket springs move independently of one another, which means less motion transfer: if your partner turns over, you're less likely to feel it. The medium firmness is a sensible middle ground, forgiving enough for side sleepers to sink at the shoulder while still offering support for back sleepers. The price is high, but Harrison Spinks is a long-established British maker and you're paying for that pedigree. If you buy through Mattressman, their listed 60-night trial gives you a decent window to change your mind, which takes some of the risk out of spending this much. Just check the terms at whichever retailer you use, as they can differ.
Key Features & what's inside
Awaiting up to date specifications. Please check back later.
Who's it NOT for?
If you need a firm mattress for a bad back or you sleep exclusively on your front, a medium tension may feel a little too soft. Budget shoppers should look elsewhere too: at £1,461.15 upwards, there are plenty of capable pocket spring mattresses for less.
Harrison Spinks Heaven 21500 Medium Mattress
Is the Harrison Spinks Heaven 21500 firm or soft?
It's a medium firmness, which suits most sleeping positions. Side and back sleepers tend to get on well with medium tension, although if you specifically want a firm feel this probably isn't the one for you.
How much does the Harrison Spinks Heaven 21500 cost?
Prices range from £1,461.15 to £3,145 depending on the size you choose. It's a premium price, reflecting Harrison Spinks' position as a high-end British manufacturer.
What sizes does the Heaven 21500 come in?
It's available in UK Single, UK Double, UK King and UK Super King, plus an EU Single for continental bed frames.
Does the Harrison Spinks Heaven 21500 come with a trial?
Mattressman lists a 60-night trial and free next day delivery with this mattress. Bear in mind these are the retailer's own terms, not a Harrison Spinks guarantee, so they may not apply if you buy elsewhere.
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