Silentnight does not sell exclusively through one channel, and that is both good and bad news if you are trying to buy one. Good, because there are roughly two dozen approved UK stockists competing for your order, which usually means better delivery windows and more frequent discounting than a single-retailer brand. Bad, because the same mattress can carry noticeably different prices, trial terms and return conditions depending on where you click “buy.”
We checked the returns, delivery and trial policies published by Silentnight itself and by its main retail partners, Argos, Costco, Dreams, MattressOnline and MattressNextDay among them. The goal was working out which one actually suits which kind of buyer. Below is what each route gets you, in plain terms, plus how to tell a genuine sale price from one that has been inflated first.
Quick Verdict
- Silentnight lists around 25 approved UK retailers, including Argos, Costco, Dreams, John Lewis, MattressOnline, MattressNextDay, Bensons for Beds and Dunelm.
- Costco is the only major stockist that requires a paid membership, and it carries a narrower, more premium-leaning slice of the range than Argos or Dreams.
- Trial length varies a lot by retailer: 40 nights at Bensons, 60 nights buying direct, and 100 nights at Argos, Dreams and MattressOnline.
- Nearly every retailer trial is an exchange, not a refund. Read the small print before assuming you can send a disliked mattress back for your money.
- Buying direct from silentnight.co.uk gets you the manufacturer’s own guarantee terms first-hand, but a narrower selection and no independent price comparison.
- “Was” prices in mattress retail are worth treating with suspicion. Regulators have specifically flagged the sector for sales that never really end.
Retailers at a Glance
Before the retailer-by-retailer detail below, here’s how the main stockists compare side by side on the things that actually change your decision. That means trial length, exchange fees, membership requirements, and delivery speed, at a glance.
| Retailer | Trial/exchange window | Exchange fee | Membership needed | Delivery |
|---|---|---|---|---|
| Argos | 100 nights, exchange only | Not separately published; £30 collection charge on standard change-of-mind returns | No | Same-day delivery or fast store collection |
| Costco UK | Standard Costco returns process | Not published for mattresses specifically | Yes, paid membership from roughly £42/year | Standard Costco delivery |
| Dreams | 100 nights, exchange only, from 30 nights | £95 | No | Standard delivery window |
| MattressOnline | 100-night comfort trial | Not published in the trial terms reviewed | No | Free delivery quoted |
| MattressNextDay | Sleep Trial | £99 flat swap fee | No | Next-day if ordered by 6pm on a weekday |
| Bensons for Beds | 40 nights (5-night minimum) | Not published (“charges apply”) | No | Standard delivery, plus a store network to try before you buy |
| Direct (silentnight.co.uk) | 60 Night Comfort Exchange (28-night minimum use) | None stated; you only pay a difference if you upgrade | No | Standard delivery window |
Which retailers actually sell Silentnight mattresses?
Silentnight names around 25 UK stockists on its own approved retailer list, spanning big-box furniture chains, mattress specialists and general retailers. The core names most buyers will recognise are Argos, Very, Amazon, Wayfair, Dreams, Costco Wholesale, John Lewis, DFS, Dunelm, Next, MattressOnline and MattressNextDay. Source: Silentnight approved retailers
Buying from anywhere off that list, a marketplace seller with no clear Silentnight relationship, for example, is where warranty and returns problems tend to start. Stick to a named approved retailer or silentnight.co.uk directly if you want the manufacturer’s guarantee to apply without a fight.
| Retailer | Membership needed | Trial/exchange window | Typical range carried |
|---|---|---|---|
| Argos | No | 100 nights (exchange only) | Broad, budget to mid-range |
| Costco UK | Yes, paid membership | Standard Costco returns | Narrower, mid-to-premium pocket and Geltex models |
| Dreams | No | 100 nights, exchange only, from 30 nights | Broad, budget to premium |
| MattressOnline | No | 100-night comfort trial | Broad, £218 to £1,229+ |
| MattressNextDay | No | Sleep Trial, £99 swap fee applies | Broad, focused on fast delivery |
| Bensons for Beds | No | 40 nights (5-night minimum) | Broad, includes exclusive lines |
| Direct (silentnight.co.uk) | No | 60 Night Comfort Exchange; 365 nights on Just Sleep only | Full range including online-exclusive bundles |
Do you need a Costco membership to buy a Silentnight mattress?
Yes. Costco UK sells Silentnight mattresses, including the Geltex Ultraflex 3000 Mirapocket and Geltex 4000 Pocket Boxtop, but only to paying members. It’s the one major stockist on this list where that’s true. Source: Costco UK
Individual membership runs at roughly £42 a year, with an Executive tier around £84. Costco has historically required proof of employment or business status to join, though an online-only membership route also exists for shopping without a warehouse card.
Costco’s Silentnight prices start from £519.99 for a standalone mattress, rising to £1,549.99 for a Geltex mattress bundled with an ottoman divan base. That puts it towards the premium end of the brand’s range rather than competing on entry-level price. Worth it just for one mattress? Only if the membership already earns its keep elsewhere in your shopping. If you are already a member for the weekly shop, it is worth a look; if you are not, the membership fee alone usually cancels out any saving on a single mattress purchase.
How does Argos’s 100-night trial actually work?
Argos backs its Silentnight mattresses with a 100 Night Comfort Promise, but it’s an exchange scheme rather than a money-back guarantee. Worth waiting the full trial out? Argos explicitly recommends sleeping on the mattress for four to six weeks before deciding, rather than judging it in the first few nights. Source: Argos
You can only exchange for the same size mattress, Argos refunds or charges the difference if the replacement is a different price, and the mattress must be undamaged and used in a normal domestic setting. Outside that promise, standard returns for a genuine change of mind are handled under Argos’s usual 30-day policy, and a £30 collection charge applies to returned large items like mattresses unless the item is faulty. Source: Argos Help Same-day delivery or fast store collection is Argos’s real advantage here over most competitors.
Is Dreams or MattressOnline better for a Silentnight mattress?
Both run broadly similar 100-night comfort trials, so the choice usually comes down to price and range rather than trial terms.
Dreams’ 100 Night Comfort Guarantee lets you exchange from 30 nights up to 100 nights of use, and covers most of its stock including end-of-line and made-to-measure mattresses. It charges a £95 fee to cover collection of the old mattress and delivery of the new one. Source: Dreams
MattressOnline advertises the same 100-night structure and carries a wide Silentnight spread from around £218 up past £1,229 for its higher-end pocket and Geltex models, all with free delivery quoted. Source: MattressOnline Neither is consistently cheaper than the other on a like-for-like model, so it is genuinely worth checking both before you order rather than assuming one is the default best price.
What do you get buying direct from Silentnight?
Buying at silentnight.co.uk gets you the manufacturer’s own trial and guarantee terms without a retailer’s policy layered on top, which matters if a warranty claim ever gets complicated.
The standard offer is a 60 Night Comfort Exchange, usable once you’ve slept on the mattress for at least 28 nights and up to 60 nights from delivery. It’s an exchange for another product rather than a refund. Source: Silentnight
The exception is the Just Sleep rolled bed-in-a-box range, which carries a genuine 365 Night Sleep Trial. Guarantee length also depends on the range: five years across the standard Silentnight collection, extending to ten years specifically on the rolled mattresses in the Sleep Now line. Source: Silentnight Buying direct also means dealing with Silentnight’s own customer service for any fault, rather than a retailer acting as the middleman, which some buyers prefer and others find slower.
Are MattressNextDay or Bensons for Beds worth considering?
They suit two different priorities. MattressNextDay’s entire pitch is speed: order by 6pm on a weekday and get a mattress the next day. Its Sleep Trial costs nothing to start, but carries a flat £99 fee to collect the old mattress and deliver a replacement if you decide to swap. Source: MattressNextDay
Bensons for Beds runs a shorter 40 Night Comfort Guarantee, with a five-night minimum before you can claim and a 40-night maximum. It also offers a standard 14-day cancellation window for online orders and a 5-year bed guarantee on the mattress itself. Source: Bensons for Beds If you want the shortest possible wait for delivery, MattressNextDay is the obvious pick. If you want a showroom to physically lie on a mattress first, Bensons’ network of stores is the advantage MattressNextDay cannot match.
What does it actually cost to change your mind?
| Route | Exchange fee | Notes |
|---|---|---|
| Argos (100 Night Comfort Promise) | Not separately published | Standard 30-day change-of-mind returns carry a £30 collection charge, waived if faulty |
| Costco | Not published for mattresses specifically | Standard Costco member returns process applies |
| Dreams | £95 | Covers collection of the old mattress and delivery of the new one |
| MattressOnline | Not published in the trial terms we reviewed | Worth confirming with customer service before ordering |
| MattressNextDay | £99 | Flat fee regardless of mattress price |
| Bensons for Beds | Not published (“charges apply”) | Bensons’ own help pages don’t state a figure; call to confirm |
| Direct (silentnight.co.uk) | None stated | You only pay a difference if you upgrade to a pricier mattress |
How do you spot a fake “was” price on a Silentnight mattress?
Treat any large percentage-off claim with scepticism until you’ve checked the price history yourself. Which? has repeatedly found mattress retailers running sale countdown timers and “hurry, offer ends” messaging on deals that were, in reality, permanent or continuous. Source: Which?
And retailers keep swapping one sale mechanism for an almost identical one the moment the advertised end date passes. The UK’s competition regulator has separately investigated online sales practices in this space, which tells you the pattern is widespread enough to draw formal scrutiny, not a one-off. Source: GOV.UK, CMA
Which retailer should you actually buy from?
There is no single best answer, it depends on what you are optimising for. Buy from Argos if you want the fastest possible delivery and a familiar high-street name. Buy from Dreams or MattressOnline if you want the longest trial window and the widest choice to compare.
Buy direct from Silentnight if a straightforward manufacturer relationship matters more to you than retailer perks. Buy from Costco only if the membership already pays for itself elsewhere in your shopping.
Whichever route you choose, decide on the model first. Our full Silentnight mattress review and ranked picks by use case are a better starting point than browsing a retailer’s category page cold. If you’re weighing up the hotel-style option specifically, our guide to the Premier Inn Mattress 2.0 and its sale timing patterns covers that model’s own retail quirks in more depth. If comfort layers rather than a full replacement are what you are actually after, see our topper comparison instead.
Before You Buy: Quick Answers
Is it cheaper to buy a Silentnight mattress direct or through a retailer?
Neither is reliably cheaper. Silentnight’s own site avoids a retailer markup but rarely runs the deepest discounts; Argos, Dreams and MattressOnline compete on price more aggressively but the RRP they discount from is not always trustworthy. Compare the actual checkout price across two or three sources rather than assuming either route wins by default.
Can I return a Silentnight mattress if I just don’t like it?
Usually yes, but as an exchange rather than a refund, and only within the retailer’s specific window. Argos, Dreams and MattressOnline all run roughly 100-night exchange schemes; Bensons for Beds gives 40 nights; buying direct from Silentnight gives 60 nights with a 28-night minimum use requirement first.
Does Costco sell the full Silentnight range?
No. Costco UK carries a narrower selection weighted towards its Geltex and Mirapocket models rather than the brand’s full Miracoil-to-premium spread, and prices start higher than at general retailers like Argos.
Do I need to be a member to shop Silentnight at Costco online?
Yes, a paid Costco membership is required to purchase, whether in-warehouse or online, though an online-only membership option exists if you do not want a physical warehouse card.
Which retailer has the fastest delivery for a Silentnight mattress?
MattressNextDay and Argos are the two built around speed, with next-day or same-day options on in-stock models. Direct orders from silentnight.co.uk and the larger comparison sites like Dreams typically quote longer standard delivery windows.
Are all Silentnight retailers selling genuine, authorised stock?
Only the retailers named on Silentnight’s own approved retailer list are guaranteed to be authorised, which is where the manufacturer’s guarantee applies without complication. Buying from an unlisted third-party marketplace seller carries more risk if something goes wrong.
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