Deal verdict
Both have been cheaper. It's worth waiting on either.
The Dormeo S Plus Evolution Memory Foam Mattress costs £450 less today.
Dormeo
Worth waiting
£799 Double · Hybrid
It's been cheaper. It was £489 on 12 Nov 2026. It's been £799 or less for 100% of the 32 days we've tracked.
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Mattress Online
Worth waiting
£1,249 Double · Pocket sprung
It's been cheaper. It was £1,061 on 13 Nov 2026. It's been £1,249 or less for 100% of the 65 days we've tracked.
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| Dormeo S Plus Evolution Memory Foam Mattress | Harrison Spinks Harewood 4250 Pocket Pillow Top Mattress | |
|---|---|---|
| Mattress type | Hybrid | Pocket sprung |
| Warranty | 15 years | 5 years |
| Firmness | Not stated | Medium soft |
| Sizes | Single, Double, King, Super King | Single, Double, King, Super King, Emperor |
Specs are the figures each retailer publishes. Prices are for the size shown above.