Firmness
Extra Firm
Type
Pocket Spring
Depth (cm)
Number of Layers
Trial Period (nights)
60
Warranty (years)
Price Range
£485 to £675
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.
Choose this one if firmness is the priority. Extra firm mattresses are a fairly small corner of the market, and many buyers who need one end up disappointed by beds labelled firm that turn out medium in practice. Silentnight states this as extra firm, plainly. The pocket spring construction helps too, because you get that solid feel without the dead, board-like quality of some traditional orthopaedic designs: springs still contour a little to your shape. At £485 for a Double it sits at a sensible price for a branded pocket spring mattress. Mattressman lists free next day delivery and a 60-night trial, which gives you a way out if the firmness proves too much.
Key Features & what's inside
Awaiting up to date specifications. Please check back later.
Who's it NOT for?
Side sleepers, particularly lighter ones, will likely find this too firm: an extra firm surface can press into the shoulder and hip rather than letting them sink in, which leads to numb arms and a twisted spine. If you like a plush, cushioned feel, or you're under about average weight, look at a medium instead. No Single size is listed either.
Silentnight Pocket Essentials 1400 Ortho Mattress
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How firm is the Silentnight Pocket Essentials 1400 Ortho mattress?
It's rated extra firm, the firmest category commonly sold. That suits back and front sleepers, heavier people, and anyone who finds softer mattresses leave them sinking or aching. Lightweight side sleepers should probably steer clear, as extra firm surfaces tend to push back against the shoulder and hip rather than cushioning them.
What sizes does the Pocket Essentials 1400 Ortho come in?
Three sizes are listed: UK Double, UK King and UK Super King, priced from £485 to £675. There's no Single option listed, so if you're buying for a child's room or a guest single, you'll need to look elsewhere in Silentnight's range.
Does the Silentnight Pocket Essentials 1400 Ortho come with a trial?
Mattressman lists a 60-night sleep trial and free next day delivery on this mattress. Both are that retailer's own offers rather than a Silentnight guarantee, so if you buy from a different shop, check their returns and delivery terms before ordering.
Is a pocket spring ortho mattress good for a bad back?
An extra firm pocket spring mattress gives solid, even support, and the springs respond individually to your shape, which many people with back trouble prefer. That said, firmer isn't automatically better for every back. If your pain eases on a firm surface, this style is a reasonable fit; if not, a medium-firm may serve you better.
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