Deal verdict
The Silentnight Extra Firm Miracoil Mattress is the better deal today.
It is at a genuine low, while the Silentnight Bonnell Mattress has been cheaper. The Silentnight Bonnell Mattress costs £1 less today.
Mattress Next Day
Good time to buy
£215 Double · Open coil
£215 is a genuine low. Today is the only day in the 69 days we've tracked it's been this cheap.
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Mattress Online
Worth waiting
£214 Double · Open coil
Shown as reduced from £239
It's been cheaper. It was £204 on 13 Nov 2026. It's been £214 or less for 100% of the 34 days we've tracked.
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| Silentnight Extra Firm Miracoil Mattress | Silentnight Bonnell Mattress | |
|---|---|---|
| Firmness | Extra firm | Firm |
| Mattress type | Open coil | Open coil |
| Warranty | Not stated | 5 years |
| Sizes | Size not stated, Single, Small Double, Double, King | Single, Small Double, Double, King |
Specs are the figures each retailer publishes. Prices are for the size shown above.