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Is It Time for a New Mattress?

Most people hold onto their mattress for far too long. Whether it's the cost of replacing it, the hassle of disposal, or simply not noticing the gradual decline in quality, millions of UK sleepers are resting on mattresses that are actively harming their sleep and their health.

The general recommendation is to replace your mattress every 7–10 years — but the reality is more nuanced. Here are 7 clear signs that it's time to invest in a new one.

Sign 1: You Wake Up Stiff or Aching

If you regularly wake up with back pain, neck ache, or stiff joints that ease within an hour or two of getting up, your mattress is almost certainly the culprit. A good mattress should support your spine in its natural alignment throughout the night.

Sign 2: You Sleep Better Elsewhere

If you consistently sleep better in hotels, guest beds, or on the sofa, your mattress is underperforming. Your bed should be the best place you sleep — not a place you dread returning to.

Sign 3: Visible Sagging or Lumps

Any visible indentation, sagging, or lumps in your mattress surface are signs of structural breakdown. Sagging creates uneven support and can accelerate joint and sleep deprivation issues over time.

Sign 4: You're Waking Up Tired

Persistent fatigue despite getting 7–8 hours of poor sleep quality is a strong signal. Mattresses that have lost their support structure prevent deep, restorative sleep cycles.

Sign 5: Increased Allergies or Asthma

Old mattresses accumulate dust mites, dead skin cells, and allergens over time. If your allergy or asthma symptoms are worse at night or in the morning, an ageing mattress could be a factor.

Sign 6: The Mattress Is Over 8 Years Old

Even if your mattress looks fine, internal springs and foam degrade with time and body weight compression. After 8 years, most mattresses have lost significant support capacity — even if the cover still looks presentable.

Sign 7: Your Sleep Needs Have Changed

Weight changes, new sleep partners, injuries, pregnancy, or aging joints all change what your body needs from a mattress. A mattress bought a decade ago for a different version of your body may no longer be right.

What to Buy Instead

Once you've decided it's time for a replacement, use our complete guide to choosing a mattress in the UK to make the right call. Browse our full mattress collection — from pocket sprung to memory foam options. For independent buying advice, check Which? mattress reviews.