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Medium Mattresses: 2026 UK Range & Scores

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Medium is a useful default. If you're of average build and sleep on your side or change position through the night, it's a sensible starting point for cushioning your shoulder and hip while keeping your body supported.

A heavier back sleeper usually needs a step firmer, while a light side sleeper needs a step softer. The middle option is the easiest thing in the shop to sell, but your build and sleeping position matter more than its place in the range.

Medium suits a broad preference better than a specific complaint

Medium works as a starting point if you share a bed with someone close to your weight, so the couples guide is useful for choosing one tension together. More weight presses further into the same comfort layer, which is why Bed Advice UK advises a firmer tension as body weight increases.

For a heavier build or front sleeping, try medium-firm to limit how far your pelvis sinks. With a lighter build on your side, consider soft-medium for more shoulder cushioning. If back pain is driving your purchase, use the back-pain guide.

Your lying position and trial terms matter more than the label

A firmness label describes a maker's own range, not a shared measurement between makers. Give each mattress at least 10 minutes in your normal sleeping position, as Bed Advice UK advises, because the comfort layer's depth changes how it feels beneath your shoulder and hip.

For its hand check, lie on your back and slide a hand into the hollow beneath it. An easy slide suggests the bed could be too hard. A struggle suggests it's too soft. Some resistance is about right.

At home, you'll need time to judge comfort, so check when the trial starts, what returns cost and whether a protector is required. Give comfort and pressure relief more weight when reading the card's scores, since those matter when choosing a medium feel.

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