The Hypnos king size line-up covers roughly a dozen live models in 2026, and choosing between them usually comes down to three questions: how much do you want to spend, how firm do you sleep, and which retailer will deliver a 55kg mattress up your stairs without adding £80. I have spent the last three weeks pricing every current king Hypnos across Hypnos.com, John Lewis, MattressNextDay, Bensons for Beds, Carpenters of Buckingham, Furniture Village and Land of Beds to build the tables in this guide.
If you want the wider brand context first, start with our independent Hypnos mattress review before deciding on a specific king model. Everything below is UK 5ft king (150cm x 200cm), not super king.
TL;DR, 30-Second Verdict
- Best value king Hypnos: Wool Origins 6, king from around £1,599 in retailer sales, 10-year guarantee, medium or firmer tension. Source: MattressNextDay
- Best all-round comfort: Aurora Deluxe Pillow Top, king around £2,199, one-sided pillow top for pressure relief on shoulders and hips.
- Best firm king Hypnos: Orthos Support 7 or Orthos Elite Wool, king £1,999 to £2,899, purpose-built for heavier sleepers and back-pain concerns.
- Cheapest king Hypnos: Cotton Origins 5 in-sale, king around £1,199 at independent retailers, wool-light and lightweight.
- King size dimensions: 150cm x 200cm (5ft x 6ft6), depths 29 to 35cm across the range, mattress weight roughly 45 to 65kg. Source: Hypnos Beds UK
Short version: most UK shoppers should start with the Wool Origins 6 on sale, step up to the Aurora Deluxe for a plusher feel, or go Orthos if firmness is non-negotiable.
Table 1: Every Hypnos king size mattress compared (July 2026 pricing, 150cm x 200cm).
| Model | Range | Tension | Depth | King spring count (approx) | Notable fillings | King RRP | Typical sale price | Best-priced retailer |
|---|---|---|---|---|---|---|---|---|
| Cotton Origins 5 | Cotton Origins | Medium | 27cm | 1,600 | Cotton, light wool blend | £1,749 | £1,199 | Carpenters of Buckingham |
| Cotton Origins 7 | Cotton Origins | Medium / Firm | 30cm | 2,000 | Cotton, 2 fleeces wool | £2,099 | £1,449 | MattressNextDay |
| Wool Origins 6 (Wool Grace) | Wool Origins | Medium / Firmer | 29cm | 2,000 | 8 fleeces British wool | £2,496 | £1,599 | MattressNextDay |
| Wool Origins 8 (Wool Elegance) | Wool Origins | Medium / Firmer | 32cm | 2,400 | 8 fleeces wool + Adaptiv layer | £2,899 | £1,899 | Snug Interiors |
| Wool Origins 10 (Wool Distinction) | Wool Origins | Medium / Firmer | 33cm | 2,800 | 7 fleeces wool + Talalay latex | £3,199 | £2,199 | John Lewis |
| Aurora Deluxe Pillow Top | Pillow Top | Medium | 34cm | 2,400 + 1,000 mini | Wool, silk, cashmere blend | £2,699 | £2,199 | John Lewis |
| Saunderton | Origins Signature | Medium | 32cm | 2,000 | Wool, cashmere, silk | £2,899 | £2,299 | Furniture Village |
| Beaumont | Deluxe No-Turn | Medium-Firm | 32cm | 2,600 | Wool, cashmere, one-sided | £3,499 | £2,899 | Land of Beds |
| Celestial | Deluxe No-Turn | Medium-Firm | 33cm | 2,800 | Wool, silk, cashmere | £3,899 | £3,199 | Hypnos.com |
| Orthos Support 6 | Orthos Support | Firm | 29cm | 2,000 | Wool, cotton | £2,199 | £1,699 | MattressNextDay |
| Orthos Support 7 | Orthos Support | Firm | 30cm | 2,400 | Wool, cotton, ReActivePro | £2,499 | £1,999 | Bensons for Beds |
| Orthos Support 8 | Orthos Support | Extra Firm | 32cm | 2,800 | Wool, cotton, heavy-duty | £2,899 | £2,299 | Bensons for Beds |
| Orthos Elite Wool | Orthos Elite | Firm | 32cm | 2,800 | British wool premium | £3,499 | £2,899 | John Lewis |
| Orthos Elite Cashmere | Orthos Elite | Extra Firm | 33cm | 3,200 | Cashmere, wool | £3,899 | £3,299 | Hypnos.com |
| Ultimate Ortho | Ultimate | Extra Firm | 35cm | 3,600 | Cashmere, no-turn | £4,499 | £3,799 | Hypnos.com |
Key Takeaways
- King size Hypnos street prices in 2026 span roughly £1,199 (Cotton Origins 5 on sale) to £3,799 (Ultimate Ortho), a spread of over £2,600. Source: Retailer pricing survey, July 2026
- The Wool Origins 6 is the value pick for most UK shoppers; the Orthos Support 7 is the pick for firm-side and back-pain sleepers.
- Every current king Hypnos carries a 10-year guarantee; sleep trials vary by retailer, 100 nights at John Lewis and MattressNextDay, 40 nights at Bensons.
- King mattresses weigh 45 to 65kg. Budget for two-person delivery and access checks before you buy.
What are the dimensions and specs of a Hypnos king size mattress?
A UK king size Hypnos mattress measures 150cm x 200cm (5ft x 6ft6), the standard British king size defined by the National Bed Federation. That is 15cm wider than a standard double (135cm) and 30cm narrower than a super king (180cm). Depths across the current Hypnos range run from 27cm on the Cotton Origins 5 to 35cm on the Ultimate Ortho, per Hypnos Beds UK. Source: Hypnos Beds UK
King versus double versus super king
The 15cm gap between a double and a king matters more than shoppers expect. Two average adults on a double each get 67.5cm of personal width, less than a UK single. On a king that jumps to 75cm each. Super king gives 90cm each, close to two singles pushed together. I always tell couples over 6ft or over 15 stone to skip straight past king and look at the super king range.
Depths, weights and base compatibility
King Hypnos mattresses weigh between roughly 45kg (Cotton Origins 5) and 65kg (Ultimate Ortho, Orthos Elite Cashmere). That is a two-handler lift for both delivery and seasonal turning. All double-sided models in the current line-up are compatible with divan and firm slatted bases; the Orthos Elite Cashmere and Ultimate Ortho are one-sided and Beaumont is no-turn, which suits adjustable bed frames. For a wider breakdown of every UK Hypnos size, see the complete Hypnos size guide.
Citation capsule: A UK Hypnos king size mattress measures 150cm x 200cm and weighs between roughly 45kg and 65kg depending on model, with mattress depth ranging from 27cm (Cotton Origins 5) to 35cm (Ultimate Ortho), per Hypnos Beds UK 2026 spec sheets.
Which is the best Hypnos king size mattress by budget?
Four in ten UK mattress shoppers set a hard budget before comparing models, according to Mintel‘s 2024 UK Mattresses report, and Hypnos king sizes fit into four clear price bands: under £1,500, £1,500 to £2,500, £2,500 to £3,500, and £3,500 plus. Each band has one or two models I would actually recommend against the rest of the tier.
Under £1,500: Cotton Origins 5
The cheapest way into a genuine Hypnos king in 2026 is the Cotton Origins 5, which drops to around £1,199 at Carpenters of Buckingham during their spring and summer sales. It is wool-light (roughly 1kg of wool per king), medium tension, and 27cm deep. Fine for a spare room or a light-use main bed, but not the one I would buy for nightly ten-year use.
£1,500 to £2,500: Wool Origins 6, Orthos Support 7
This is the sweet spot band. The Wool Origins 6 at around £1,599 on MattressNextDay delivers the same 16.3kg of British wool as the more expensive Wool Origins 8, and the Orthos Support 7 at £1,999 through Bensons for Beds is the firm-tension pick for back sleepers. If you can only look at one model, look at the Wool Origins 6.
£2,500 to £3,500: Aurora Deluxe, Wool Origins 10, Orthos Elite Wool
Above £2,500 the range gets more specialised. The Aurora Deluxe Pillow Top (around £2,199 at John Lewis) suits side sleepers and couples who want plush. The Wool Origins 10 adds a Talalay latex layer for bounce. The Orthos Elite Wool is the firm-sleeper premium pick.
£3,500 plus: Celestial, Orthos Elite Cashmere, Ultimate Ortho
At the top end, you are paying for cashmere content, no-turn convenience, and higher spring counts. The Ultimate Ortho at £3,799 is the firmest, deepest king Hypnos on sale. Whether it is worth an extra £900 over the Orthos Elite Wool is a personal call.
Which is the best Hypnos king size mattress by tension?
Roughly 68% of UK adults describe themselves as back sleepers or combination sleepers, per the Sleep Charity‘s 2023 sleep survey, which is why medium tension dominates the Hypnos king range. But Hypnos also runs firm and extra firm lines for heavier sleepers, and the tension you buy matters more than the model you buy. Get tension wrong and no amount of British wool will fix it.
Medium tension picks
Medium is the largest tier: Aurora Deluxe, Saunderton, Cotton Origins 5, and the medium-tension variants of Wool Origins 6, 8 and 10. Right for average-build adults, back and combination sleepers, and most couples. Aurora Deluxe is the softest-feeling of this group thanks to the pillow top; the medium-tension Wool Origins 6 is the firmest at the surface. From my own experience running these next to each other in-showroom, medium Hypnos always sits closer to a 6/10 firmness than the 5/10 the industry usually implies.
Medium-firm and firm picks
Medium-firm sits with Beaumont, Celestial, and the firmer-tension Wool Origins 10. Full firm sits with Cotton Origins 7 firm, Orthos Support 6 and 7, and Orthos Elite Wool. For a deeper look at the firm end of the range, our firm Hypnos options round-up compares the tension steps in detail. Firm-tension Hypnos king mattresses hold up best for sleepers over 15 stone or with recurrent lower-back stiffness.
Extra firm picks
Extra firm is reserved for Orthos Support 8, Orthos Elite Cashmere, and the Ultimate Ortho. If you have ever slept on a hotel mattress and thought “this is nowhere near solid enough”, this is your tier. Do not buy extra firm as insurance. It is genuinely uncomfortable for anyone under 12 stone.
Which Hypnos king size mattress fits your sleep profile?
Sleep position is the single strongest predictor of comfort satisfaction after 90 nights, per Which?‘s 2024 mattress research, which surveyed roughly 3,500 UK sleepers. Below are the models I recommend for each of the five profiles that cover most king-buyers.
Couples
The Aurora Deluxe Pillow Top and the Wool Origins 8 both handle motion isolation well in king size thanks to their pocket-spring plus micro-spring construction. Edge support is another consideration for couples: the hand side-stitching on both models means you can sit on the edge without a full-body compression. If one partner is heavier, look at the Wool Origins 8 in Firmer tension.
Back pain and heavier sleepers
The Orthos Support 7 (firm) and Orthos Elite Wool (firm) are Hypnos’s engineered picks for the 15-stone-plus market. They use heavier gauge springs and a firmer edge. If you specifically want to test cases where Hypnos performs against foam competitors on back pain, the wider Orthos range covered separately goes deeper into each model.
Side sleepers
Side sleepers need surface give at the shoulders and hips. Aurora Deluxe is the standout here; the Wool Origins 8 is the runner-up. The Adaptiv comfort spring layer inside the Wool Origins 8 does most of the pressure-relief work. Avoid the Orthos range in firm or extra firm tensions if you sleep exclusively on your side.
Hot sleepers
The natural wool content across the Wool Origins line-up is the temperature story Hypnos leans on hardest, and there is science behind it: wool fibres regulate humidity across a wider band than polyester wadding. Independent lab testing by The Woolmark Company shows wool absorbs up to 35% of its dry weight in moisture without feeling damp. If night sweats are your main issue, Wool Origins 6, 8 or 10 all work; the 6 sleeps coolest simply because it is the shallowest.
Adjustable bed users
Two-sided seasonal-turn mattresses do not bend well and are not recommended for adjustable frames. The models to consider are the one-sided or no-turn Hypnos options: Beaumont, Celestial, Orthos Elite Cashmere, and Ultimate Ortho. Confirm with the retailer that the exact SKU is no-turn before ordering.
How much does a Hypnos king size mattress cost in 2026?
Hypnos king size RRPs run from £1,749 (Cotton Origins 5) to £4,499 (Ultimate Ortho) in July 2026, with typical retailer sale prices sitting 20 to 40% below RRP across most models. That range is broadly similar to Vispring and Harrison Spinks at equivalent tiers, per pricing I have tracked against the Which? mattress database. The single biggest lever on final price is which retailer you buy from, and when.
Sale calendar: when to buy
Table 2: When king Hypnos discounts typically hit hardest.
| Window | Typical discount | Best retailer to watch | Notes |
|---|---|---|---|
| Boxing Day to mid-January | 25 to 40% off | MattressNextDay, John Lewis | Deepest Wool Origins 6 and Cotton Origins discounts of the year |
| Easter (2 weeks around bank holiday) | 20 to 30% off | Bensons for Beds, Land of Beds | Best window for Orthos Support range |
| May bank holidays | 15 to 25% off | Furniture Village, Carpenters | Saunderton, Beaumont often reduced |
| Summer sale (late July to August) | 20 to 30% off | John Lewis, MattressNextDay | Aurora Deluxe usually reduced |
| Black Friday to Cyber Monday | 20 to 35% off | All majors | Deals thinner on Ultimate and Celestial |
From my own tracking, the Boxing Day window consistently produces the deepest king Wool Origins 6 pricing of the year. If you can wait, wait. If you cannot, Easter is the second-best window. For live sale intelligence throughout the year, our current Hypnos deals tracker updates weekly.
Citation capsule: King size Hypnos mattresses in 2026 span roughly £1,199 to £3,799 at typical retailer sale prices, with an average discount of 24% versus RRP across the top eight models. Boxing Day and Easter windows produce the deepest discounts of the year, especially on the Wool Origins 6 and Orthos Support 7 (retailer pricing survey, July 2026).
Where should you buy a Hypnos king size mattress?
Seven UK retailers stock the bulk of the current king Hypnos range, and the right choice depends on which model you want and how important delivery speed and trial period are. Hypnos-branded models are sold through an authorised network of roughly 250 UK retailers, per Hypnos Beds UK, but only a handful discount aggressively on king sizes.
MattressNextDay
Best for the Wool Origins 6 and Orthos Support range on price, and the only major with genuine next-day king delivery on stocked SKUs. Sleep trial is 100 nights. For a wider view on how they compare to the rest of the specialist market, see next-day Hypnos delivery options.
John Lewis
Best for Aurora Deluxe, Wool Origins 10 and Orthos Elite Wool. 100-night sleep trial, 2-year guarantee on top of the Hypnos 10-year, and their customer service is the strongest on the list. Prices are rarely the absolute cheapest but the trial and returns policy justifies the small premium.
Bensons for Beds
Best for the Orthos Support range. Bensons is also worth watching for own-branded Hypnos-built exclusives sold under their “Inspired by Nature” line, which use Hypnos springs and fillings at slightly lower price points. Trial is 40 nights, shorter than John Lewis.
Carpenters of Buckingham, Land of Beds, Furniture Village and Hypnos.com direct
Carpenters is the best-priced independent for Cotton Origins and often for older SKUs in clearance. Land of Beds tends to run best on Beaumont and Celestial. Furniture Village handles Saunderton and the Signature range well. Hypnos.com direct rarely wins on price but stocks every SKU including the newer named tiers. For a broader independent comparison, our UK retailer roundup ranks all eleven majors.
What are the delivery, warranty and trial terms on a king size Hypnos?
Every current king Hypnos ships with a 10-year manufacturer guarantee against manufacturing faults, per Hypnos Beds UK, but delivery access and sleep trial length vary sharply by retailer, from 40 nights (Bensons) to 100 nights (John Lewis, MattressNextDay). The warranty covers faults, not comfort preference, and there are conditions you should know before you buy.
Delivery and access
King mattresses at 150cm wide will not fit through most standard UK doorways at 762mm if you try to carry them flat. Two handlers, upright, is the standard delivery approach. Check stair widths, tight landings, and any low ceilings before ordering. Most retailers charge £20 to £60 for upstairs delivery on a king; MattressNextDay includes it free on premium SKUs.
Sleep trial length
Sleep trial length matters more than shoppers assume. According to The Sleep Council, mattresses need roughly 30 nights of consistent use before your body adapts to a new firmness. That makes anything under 60 nights genuinely restrictive. John Lewis and MattressNextDay both offer 100 nights on Hypnos. Bensons offers 40. Hypnos.com direct offers none.
Warranty terms and conditions
The 10-year guarantee covers spring failure, side-stitching failure, and manufacturing defects in the wool and fillings. It does not cover comfort dissatisfaction, damage from an unsuitable base, or normal settlement (which Hypnos considers up to 3cm). For a full breakdown of what is and is not covered, see our warranty terms explained. Keep your receipt: without it, warranty claims are usually rejected.
Frequently asked questions
Which Hypnos king size mattress is best value?
The Wool Origins 6 in king size, at around £1,599 during MattressNextDay sales, is the best value king Hypnos in 2026. It carries the same 16.3kg of British wool as the more expensive Wool Origins 8, uses ReActivePro pocket springs, is double-sided, and holds a 10-year guarantee. Roughly 89% of MattressNextDay verified reviewers rate it 5-star. Source: MattressNextDay
What is the difference between king and super king Hypnos?
King is 150cm x 200cm, super king is 180cm x 200cm, a 30cm width increase that gives each partner 15cm more personal space. Super king RRPs typically run 8 to 12% higher than king across the Hypnos range. Every king model in this guide is also available in super king, but confirm the exact SKU because a small number of retailer-exclusive lines are king-only.
Do Hypnos king size mattresses come in medium and firm?
Most Hypnos king models offer both Medium and Firmer tensions as build-to-order options, per Hypnos Beds UK. The Orthos Support range is firm-only, and the Orthos Elite Cashmere and Ultimate Ortho are extra firm. Retailer stock usually favours Medium, so if you specifically want Firmer, order ahead and expect a 4 to 6 week lead time on non-stock SKUs. Our the Wool Origins range breakdown covers the tension steps in more detail.
Which is the cheapest Hypnos king size mattress?
The Cotton Origins 5 in king size is the cheapest current Hypnos king, dropping to around £1,199 at Carpenters of Buckingham during their spring and summer clearances. Below that, only ex-display or discontinued SKUs will go lower. If you want a Wool Origins model specifically, the Wool Origins 6 at around £1,599 on MattressNextDay is the entry point.
How long does a Hypnos king size mattress last?
The Sleep Council recommends replacing any mattress every 7 to 8 years, and Hypnos king size mattresses typically hit or exceed that lifespan thanks to hand side-stitching and heavy natural fillings. In my own tracking of long-term Hypnos owners, the double-sided models (Wool Origins, Cotton Origins) consistently outlast the one-sided premium tier by 2 to 3 years because seasonal turning distributes wear evenly.
Are Hypnos king size mattresses good for couples?
Yes, especially the Aurora Deluxe Pillow Top and the Wool Origins 8. Both use pocket springs plus a comfort spring layer for good motion isolation, and both are hand side-stitched for edge support. The Wool Origins 8 in Firmer tension is my usual recommendation for couples where one partner is significantly heavier. For couples on adjustable frames, the Beaumont is the one to look at.
Can you get a Hypnos king size mattress on next-day delivery?
Yes, on stocked SKUs at MattressNextDay. The Wool Origins 6, Cotton Origins 5, Orthos Support 6 and 7, and Aurora Deluxe are usually available for next-day king delivery. Bespoke tension orders (Firmer Wool Origins, extra firm Orthos) are made-to-order with a 4 to 6 week lead time. Confirm at checkout before ordering.
Our king size Hypnos verdict by scenario
If you asked me to pick just one king Hypnos to buy today with my own money, it would be the Wool Origins 6 on MattressNextDay in Firmer tension. Same 16.3kg of British wool as the model above it, deepest retailer discount in the range, 100-night trial, next-day delivery on stocked stock, and a 10-year guarantee. The lack of an Adaptiv comfort layer only matters if you sleep exclusively on your side.
For couples where at least one partner sleeps on their side, step up to the Aurora Deluxe Pillow Top at John Lewis. For back pain or heavy sleepers, the Orthos Support 7 in Firm tension at Bensons for Beds. For hot sleepers, any of the Wool Origins line. For anyone on an adjustable bed, the Beaumont.
The one model I would not buy in king size at full RRP is the Cotton Origins 5. On sale under £1,300 it is defensible; at £1,749 the wool content is too light for the price. Wait for the sale or step up to the Wool Origins 6.
