Best budget mattress under £500 (UK)
The best budget mattress under £500 is rarely the cheapest one: it's the one where the money goes on support and fair terms. For most people that's the Emma Original, a zoned hybrid with a 10-year guarantee, and if you want the longest time to decide, the Nectar Classic Memory Foam has a 365-night trial. Spending less means choosing more carefully, because trials at this price range from a retailer's returns window to a full year. Prices change a lot by size, so we've used a UK double as the reference throughout. Every pick came in under £500 in that size when we checked on 16 October 2026.
- When we checked on 16 October 2026, 322 of the 930 double mattresses we compare were available for under £500 from at least one of our UK retail partners.
- A £500 double can get you zoned springs, 2,000 pocket springs or seven-zone memory foam from well-known brands.
- The Emma Original is the best all-rounder here for its zoned springs and 10-year guarantee, and the Nectar Classic Memory Foam gives you the longest trial, a full year.
- Mattresses sold through retailers include the cheapest picks here, while Emma and Nectar lead on trials and guarantees.
- A one-year guarantee on a cheap mattress can be a false economy if you're buying for nightly use.
What £500 buys in a UK double
In a UK double, £500 buys pocket springs, zoned hybrids or seven-zone memory foam from well-known brands. When we checked on 16 October 2026, 322 of the 930 doubles we compare had a price under £500, and half of all 930 could be bought for £699 or less. So £500 sits a little below the middle of the market.
Price within the budget doesn't follow spec as neatly as you'd think. On the day we checked, the cheapest pick here was a 15cm foam mattress for spare rooms, but the second cheapest was the Spring King, with 2,000 pocket springs. Emma's zoned hybrid sat in the middle of the band, and Nectar's memory foam near the top, both with long trials. If you haven't settled on a construction yet, our foam vs spring comparison is a good place to start.
How we chose these six
We picked these six by comparing construction, depth, terms and price across the UK market. Each cost under £500 in a UK double when we checked on 16 October 2026. We haven't slept on them. The comparison is based on each manufacturer's or retailer's specification, verified owner reviews where they exist, and how each one compares with similar mattresses.
The order reflects how well each mattress balances construction and terms for a bed you'll sleep on every night, so the spare-room option comes last. What we earn plays no part in which mattresses appear or where they sit. You can read more about how we assess mattresses and how we make money.
Budget picks at a glance
Here's how the six compare on the details that matter most at this price. The trial column shows whose trial it is, because a retailer's returns window isn't the same as a manufacturer's trial.
| Mattress | Construction | Firmness | Depth | Trial | Guarantee | Best for |
|---|---|---|---|---|---|---|
| Emma Original | Hybrid, five-zone pocket springs | Medium firm | 25cm | 200 nights (Emma) | 10 years | Most sleepers |
| Nectar Classic Memory Foam | Memory foam, seven-zone base | Medium firm | 25cm | 365 nights (Nectar) | Forever Warranty | A year to decide |
| Silentnight Memory 800 Pocket | Hybrid, 800 pocket springs | Medium | 24cm | 60 nights (Silentnight) | 5 years | Back and side sleepers |
| Mattress Online Memory Zone 1000 | Hybrid, 1,000 pocket springs | Medium firm | 20cm | 100 nights (Mattress Online) | 5 years | Lighter sleepers |
| Spring King Grand Ortho 2000 | 2,000 pocket springs, fibre fillings | Firm | 28cm | Varies by retailer | 1 year | Firm support |
| MattressNextDay Value Memory Foam | Memory foam over recycled foam base | Medium firm | 15cm | Varies by retailer | 5 years | Guest rooms |
The best budget mattresses under £500
The Emma Original is the best budget mattress under £500 for most people, with the Nectar Classic Memory Foam close behind for its year-long trial.
1. Emma Original: the all-rounder
The Emma Original is a hybrid with a five-zone pocket spring core, which means your hips can sink slightly while your shoulders stay cushioned. A comfort foam edge lets you sit or sleep near the side, and the cover comes off to wash.
It's 25cm deep, and Emma lists it as medium firm. Emma backs it with a 200-night trial and a 10-year guarantee, and it sat in the middle of this budget in a double when we checked. Owner reviews on Emma's product page are broadly positive, and Emma says most couples report little disturbance from a partner moving.
If you prefer a distinctly soft, sink-in feel, it may be too supportive, and larger sizes cost considerably more. Against the Silentnight Memory 800, it gives you more than three times the trial and twice the guarantee. See the Emma Original
2. Nectar Classic Memory Foam: the longest trial
Nectar now sells its original memory foam mattress as the Nectar Classic. Memory foam moulds to your shape over a seven-zone base. Open-cell foam and a cooling cover are there to help with heat. It's 25cm deep and medium firm, 6.5 on Nectar's 10-point firmness scale.
The terms are the real draw. You get a 365-night trial from Nectar, and its Forever Warranty replaces the mattress for faults within the first 10 years and repairs it after that. It sat near the top of this budget in a double when we checked.
It's a memory foam feel through and through, so if you like a springy, easy-to-move-on surface, the Emma Original or one of the pocket-sprung picks will suit you better. See the Nectar Classic Memory Foam
3. Silentnight Memory 800 Pocket: the high-street hybrid
Silentnight's Memory 800 combines a memory foam comfort layer with 800 pocket springs that move independently, so a partner shifting in the night disturbs you less. Rated medium and 24cm deep, it's a safe middle ground for back and side sleepers.
The spec is simpler than pricier hybrids, and Silentnight's own terms are a 60-night trial and a 5-year guarantee, the shortest of the fixed-length trials here. If you sleep hot, memory foam can hold warmth, so a spring-only or natural-fibre mattress may suit you better. Heavier sleepers wanting deep, reinforced support may also outgrow it. When we checked on 16 October 2026, it was only £13 cheaper than the Emma Original in a double, and the Emma gives you 140 more trial nights and twice the guarantee. See the Silentnight Memory 800 Pocket
4. Mattress Online Memory Zone 1000: the own-brand hybrid with a proper trial
Mattress Online's own Memory Zone 1000 puts a memory foam layer over 1,000 pocket springs. It's handmade in the UK by a National Bed Federation approved brand, and it's vegan-friendly. Mattress Online gives it a 100-night trial and a 5-year guarantee, and the feel is medium firm.
Across owner reviews on Mattress Online, buyers describe comfortable sleep and support that isn't overly hard, though some mention a smell at first and edges softening over time. At 20cm it's one of the shallower picks, so heavier sleepers should look deeper. Compared with the Silentnight, you get more springs and a longer trial in a slimmer mattress. See the Mattress Online Memory Zone 1000
5. Spring King Grand Ortho 2000: the most springs for the money
If support per pound is what matters, this is the one to look at. Sold through MattressNextDay, the Grand Ortho packs 2,000 pocket springs into a 28cm mattress, with polyester fibre fillings chosen for recovery and durability. It's the deepest pick here and one of the cheapest in a double when we checked.
The firm feel suits anyone who wants a solid, supportive surface. Across owner reviews on MattressNextDay, buyers praise the support and build, though some found it firmer than expected. The catch is the guarantee: one year, against five for the Mattress Online pick, which is short for a mattress you'll sleep on every night. No manufacturer trial is stated, so any trial depends on the retailer. Lightweight side sleepers may also find it presses on the shoulder and hip. See the Spring King Grand Ortho 2000
6. MattressNextDay Value Memory Foam: the spare-room pick
This is the cheapest pick here. A 2cm memory foam layer sits over a recycled foam base that does the supporting, and the mattress is hypoallergenic with natural dust mite resistance. Owner reviews on MattressNextDay praise the value, comfort and speed of delivery. It comes with a 5-year guarantee, and no trial is stated, so that depends on the retailer.
At 15cm, it's best for a guest room or occasional use. Heavier sleepers may press through the comfort layer, and lightweight side sleepers may find it unforgiving. For nightly use, the Mattress Online Memory Zone 1000 gives you pocket springs and a 100-night trial with the same 5-year guarantee. See the MattressNextDay Value Memory Foam
What you give up at this price
At this price you mostly give up depth, comfort layers and length of cover. Knowing where the savings come from helps you decide which compromises you can live with.
- Depth. The picks here run from 15cm to 28cm. A shallower mattress is fine for lighter sleepers but reaches its support core sooner under more weight.
- Comfort layers. Thinner foam or fibre on top means less cushioning at the shoulder and hip, which side sleepers notice most.
- Terms. Guarantees here run from one year to Nectar's Forever Warranty, and trials from retailer-dependent to a full year.
Of these, the terms are the one to watch. A long trial lets you find out whether the compromises matter to you; without one, you're left guessing.
Retailers' own brands or the big names
The ranges retailers sell gave us the cheapest picks here, while Emma and Nectar win on trials and guarantees. Mattress Online and MattressNextDay sell their own ranges alongside the names you'll recognise. Two of the picks above are among them, and MattressNextDay also sells the Spring King.
Emma's and Nectar's core mattresses both came in under £500 in a double when we checked on 16 October 2026. If you're unsure what you want, the longer trial is worth paying a little more for. For a wider view of the brands, see our top 10 mattress brands guide.
How to spot a genuine mattress deal
A genuine deal is a price that beats what the same mattress costs at other retailers today. The Competition and Markets Authority's 2024 principles for online mattress sellers say a "was" price must be genuine. The mattress must have sold at or above it, in sufficient volume and for a sufficient time (CMA, 2024).
Mattress sales run through most of the year, so a countdown timer is rarely a reason to rush. Each model page shows today's prices across our UK retail partners, checked daily, which is the quickest way to see whether a sale price is worth having. A boxed mattress is also easier to get up a narrow staircase. Our guide to buying a mattress in a box covers what to expect.
If you have back pain, see the best mattress for back pain guide, and the mattress buying guide covers the rest of the decision.
The Mattress Unboxed verdict
Under £500, the trial and guarantee are what separate a good buy from a false economy. The Emma Original is the best all-rounder, pairing zoned springs with ten years of cover for well under £500 in a double when we checked on 16 October 2026. If you'd rather have a full year to decide, the Nectar Classic Memory Foam is the safer bet, as long as you like the feel of memory foam. The Spring King Grand Ortho 2000 gives you the most springs and depth for the money, but only if you can live with a one-year guarantee. Whichever you choose, check the price in the size you need, because a bargain double can become an expensive king.
Compare pocket sprung mattresses or see today's Emma Original prices.
Frequently asked questions
Buying a mattress on a budget.
Are cheap mattresses worth it?
Many are, particularly for guest rooms and children's beds. For a mattress you'll sleep on every night, look beyond the price at depth, construction and the trial and guarantee, because those decide whether a cheap mattress stays comfortable.
How much should I spend on a mattress?
For a double you'll sleep on nightly, £500 is enough for zoned springs or seven-zone memory foam from a well-known brand. When we checked on 16 October 2026, half the double mattresses we compare cost £699 or less, and 322 of 930 were available for under £500. Spending more usually buys deeper comfort layers, natural fillings and longer guarantees.
Is a pocket sprung or memory foam mattress better on a budget?
Pocket springs tend to give more support and airflow for the money, while memory foam gives closer pressure relief and absorbs movement better. Hot sleepers and heavier sleepers often do better with springs, and side sleepers often prefer foam.
When are mattresses cheapest?
Usually around Black Friday, Boxing Day and bank holidays, though mattress sales run through most of the year. A genuine saving shows up when you compare today's price across retailers, rather than trusting a countdown timer or a "was" price.
How long does a budget mattress last?
The guarantee is a useful guide: on these picks it runs from one year on the Spring King to Nectar's Forever Warranty. A thin budget mattress may soften within a few years of nightly use, while a deeper pocket-sprung or hybrid model can last much longer. Depth and materials matter too.