Best mattress for heavy people (UK)

What changes when you're a heavier sleeper

A mattress is a set of layers under load, and more weight pushes deeper through them. On a thin or soft mattress, a heavier sleeper passes through the comfort layer quickly and rests on the support core. That can feel hard in some places and saggy in others, which is why the features that matter at higher weights are mostly about what sits underneath.

• Depth. Around 25cm or more gives the springs and comfort layers room to work before you reach the base. Every pick below is at least 25cm deep.
• Firmer tension. A heavier body compresses any mattress more, so a mattress labelled firm often feels closer to medium firm. Our firm and extra firm ranges are where most heavier sleepers should start.
• A pocket spring core. Individually wrapped springs push back where you press hardest and spread the load, and they tend to hold their shape longer than a single connected unit or low-density foam. Our open coil vs pocket sprung comparison explains the difference.
• Reinforced edges. Rod edges, firmer outer springs or foam side walls stop the sides collapsing when you sit on the bed to dress.

Memory foam isn't ruled out, but deep, soft foam is the construction most likely to let the hips sink. If you love the foam feel, choose a firm build with a dense base.

The best mattresses for heavy people

We chose these by comparing depth, spring construction, edge support, firmness, trial and guarantee terms across the UK market. We haven't slept on them; the picks are based on each manufacturer's or retailer's specification, verified owner reviews where they exist, and how each compares with similar mattresses. You can read more about how we assess mattresses.

Mattress Online Rock Hard Mega Firm 1500: the value pick

This is Mattress Online's own brand, handmade in the UK, and it does exactly what the name suggests. Its 1,500 pocket springs respond individually, so you get firmer pushback where you're heavier, and steel piping around the edge helps the sides hold their shape. It's 25cm deep and rated firm, at a budget price.

Across owner reviews on the Mattress Online product page, customers describe a very firm surface with minimal dipping. There's no thick comfort layer, so side sleepers will likely find it hard at the shoulder and hip. The 100-night trial matters with a feel this firm, and it comes with a 5-year guarantee. See the Rock Hard Mega Firm 1500

Mattress Online Premium Gold 2000 Extra Firm: deeper, with a catch

Step up to 2,000 pocket springs and 29cm of depth, with a wire rod edge so the sides shouldn't sag. It's rated extra firm and still sits at a budget price, which is a lot of depth for the money. Owner reviews on Mattress Online praise how well the surface holds its shape, though some feel the edge could be firmer when sitting on the side.

The catch is the guarantee: one year, against five to twenty for most picks here. The price reflects that, and the 100-night trial gives you time to judge the feel, but it's worth weighing if you want a mattress for the long haul. See the Premium Gold 2000 Extra Firm

Otty Extra Firm Hybrid: the boxed option that flips

Most extra-firm mattresses come flat on a van. The Otty Extra Firm Hybrid arrives boxed, and it's flippable: 9/10 firmness on one side and 10/10 on the other, so you get two very firm options in one purchase. High-density foam and 2,000 encapsulated pocket springs are built to hold your spine level, and thick foam side supports make the full width usable.

It's 25cm deep, with a 100-night trial and a 10-year guarantee, at a mid-range price. There's no softer side to fall back on, so side sleepers should look elsewhere. See the Otty Extra Firm Hybrid

Sleepeezee Wool Luxe 1200: a traditional firm feel

Sleepeezee's Wool Luxe layers British wool and silk over 1,200 pocket springs, with Caliber edge support that keeps the sides usable right to the edge. The natural fillings breathe better than foam, which helps if you also sleep warm. It's rated firm, 25cm deep, and carries a 10-year guarantee, at a mid-range price.

Lighter partners and dedicated side sleepers may find it presses on the shoulder and hip. It uses wool and silk, so skip it if you avoid animal-derived materials. See the Sleepeezee Wool Luxe 1200

Sleep Story Ortho 2000: the long-guarantee pick

Sleep Story is Furniture Village's own brand, and the Ortho 2000 pairs 2,000 pocket springs in a king size with DynamicEdge side support and 30cm of depth. It's rated extra firm, and its 20-year guarantee is the longest of any pick here, matched only by the Village Luxury 4850. It sits at a mid-range price.

It's a poor match for side sleepers and lighter bodies, who will find the surface hard. Trial terms depend on the retailer, so check before you order. See the Sleep Story Ortho 2000

Village Luxury 4850: the deepest pick

At 33cm, this is the deepest mattress here. Cotton and wool fillings handle moisture and temperature, while silk and cashmere soften the surface. The springs are arranged in seven zones, so your hips can sink slightly more than your shoulders. A double steel-framed edge reinforces the sides, and Furniture Village backs it with a 20-year guarantee.

It's rated firm and sits at a premium price. Delivery can take up to five weeks, so it's one to plan for rather than buy on a whim, and memory foam fans won't find the slow sink they're after. See the Village Luxury 4850

Hypnos Honley Extra Firm: firmness from springs, not foam

The Honley gets its extra-firm rating from springs and fibre layers rather than dense foam, so it should feel supportive without sleeping hot. Three outer rows of firmer-gauge springs stiffen the edges, and the wool fillings carry Responsible Wool Standard certification. It's 30cm deep and Hypnos is a National Bed Federation Approved brand. It sits at a premium price.

It's single-sided, so it can't be flipped, and it's a specialist feel: lighter side sleepers will find too much pressure at the shoulders and hips. See the Hypnos Honley Extra Firm

Check the base and bed frame as well as the mattress

A firm mattress on a weak base won't stay firm for long. Slats that bow or sit too far apart let the mattress sag between them, and that wear can look like the mattress failing. Before you buy, check three things on the bed you already own:

• The frame's stated weight limit, which should cover everyone who sleeps in it.
• Slat spacing and a central support rail, since many mattress guarantees set conditions on the base, such as a maximum gap between slats.
• The age of the base. An old divan with tired springs undermines a new mattress from underneath.

Few mattress brands publish a maximum weight per sleeper. If a figure matters to you, ask the brand or retailer before ordering, and keep the answer in writing.

Signs your current mattress isn't coping

A mattress that's losing the fight tends to show it before it fails outright. A dip where your hips rest, visible when you strip the bed, is the clearest sign. Edges that fold when you sit on them, springs you can feel through the surface, and waking stiff after a night that should have been restful all point the same way. If your mattress is several years old and showing two or more of these, a replacement built for your weight will usually do more than a topper.

Guarantees: what's covered, and for how long

Guarantees on the picks here run from one year to twenty. Most cover manufacturing faults and body impressions deeper than a set measurement, rather than the gradual softening every mattress goes through, so read what counts as a fault. A long guarantee also signals how long the maker expects the springs to last under load. That's worth more to a heavier sleeper than to most.

Sharing a bed with a lighter partner

A firm mattress that suits you can feel hard to a lighter partner, especially a side sleeper. A zoned hybrid in medium firm is the usual compromise, though some couples in larger sizes choose two single mattresses zipped together so each side gets the firmness it needs. Our mattress sizes guide shows which sizes allow that. If either of you has back pain, our guide to the best mattress for back pain covers what the research says about firmness.

For budgets under £500 in a double, the best budget mattress guide includes firmer options, and the mattress buying guide covers the rest of the decision, from sizes to trials.