A king size bed measures 150 x 200cm - wider and longer than a double, which means standard double bedding will not fit correctly. Getting the sizing right across every layer - duvet, mattress topper, mattress protector, fitted sheet, and pillowcases - matters more than most people realise when setting up a king size bed. Our king size bedding range covers every category you need, from duvets and mattress toppers through to protectors, sheets, and duvet cover sets, across a wide selection of fills, tog ratings, and styles. Free delivery on orders over £100 and expert advice seven days a week.
Browse the full king size bedding range below, or use the category quick links to go straight to what you need. Our team is available seven days a week on 01928 242829.
King size bedding is not simply a larger version of double bedding - the dimensions are different enough that using the wrong size across any layer will affect both comfort and appearance. A king size duvet at 225 x 220cm gives the right overhang on a king size bed. A double duvet at 200 x 200cm leaves far less coverage on each side and will be pulled to one side when two people are sleeping under it. The same principle applies to fitted sheets, mattress toppers, and mattress protectors - each needs to match the 150 x 200cm king size mattress to cover it correctly and perform as intended.
This page brings together all king size bedding in one place. Use the quick links above to go directly to the specific category you need, or browse the full range below.
For a complete guide to building a king size sleep setup, see our bedding guide.
Every bedding category is available in king size. Here is a plain guide to what each does and where to find it.
| Category | What It Does | Browse |
|---|---|---|
| King size duvets | Provides warmth and insulation. A king size duvet measures 225 x 220cm - wider and longer than a double. Available in a range of tog ratings and fill types to suit different temperatures and seasons. | King Size Duvets |
| King size mattress toppers | Sits on top of the mattress to adjust how it feels - adding softness, pressure relief, or temperature regulation. Must match the mattress at 150 x 200cm. | King Size Mattress Toppers |
| King size mattress protectors | Protects the mattress from moisture, allergens, and general wear. Most mattress warranties require one to remain valid. Must fit the 150 x 200cm mattress to stay securely in place. | King Size Mattress Protectors |
| King size fitted sheets | Covers the mattress surface. The fitted sheet must match the mattress size and depth to grip the corners correctly without slipping. | Bed Sheets |
| King size duvet cover sets | Covers the duvet and coordinates the look of the bed. A king size duvet cover set typically includes the cover and two pillowcases. | Duvet Cover Sets |
| Pillows | Supports the head and neck. Pillow size is not determined by bed size - it is determined by sleep position and fill preference. Standard and large options are available across the range. | Pillows |
| Pillow protectors | Protects pillows from moisture and allergens, extending their life. Available to fit standard and large pillows. | Pillow Protectors |
| Weighted blankets | Uses evenly distributed pressure to create a calming effect. Available in king size to cover the full bed surface. | Weighted Blankets |
| Bedding Item | King Size Dimensions | Notes |
|---|---|---|
| Mattress | 150 x 200cm | The foundation everything else must match |
| Duvet | 225 x 220cm | Gives generous overhang on both sides and at the foot |
| Fitted sheet | 150 x 200cm | Must match mattress depth as well as surface size - check the pocket depth |
| Mattress topper | 150 x 200cm | Must match mattress surface exactly to avoid shifting |
| Mattress protector | 150 x 200cm | Must fit correctly to stay in place and protect the full mattress surface |
| Duvet cover | 225 x 220cm | Must match the duvet - not the mattress |
Always check the listed dimensions on each individual product before ordering, as slight variations exist between products.
If you are setting up a king size bed from scratch, or replacing multiple layers at once, here is the order in which the layers sit and what each one contributes.
| Layer | Product | Purpose |
|---|---|---|
| 1 - Mattress protection | Mattress protector | Protects the mattress from moisture, allergens, and wear. Goes directly on the mattress before anything else. |
| 2 - Comfort adjustment | Mattress topper (optional) | If you want to change how the mattress feels - softer, cooler, or more pressure-relieving - the topper goes on top of the protector. |
| 3 - Sleeping surface | Fitted sheet | Covers the topper and protector, providing the surface you sleep on directly. |
| 4 - Warmth and cover | Duvet in duvet cover | Sits on top of the fitted sheet. Tog rating determines warmth. Duvet cover coordinates the look of the bed. |
| 5 - Head support | Pillows in pillowcases | Matched to sleep position and fill preference, not to bed size. Pillow protectors beneath the pillowcases extend their life. |
| Question | Why It Matters |
|---|---|
| Does the product specifically list king size as 150 x 200cm? | Some international sizing uses "king" to mean different dimensions. Always confirm the UK king size dimensions on the listing. |
| What is the mattress depth? | Fitted sheets have a pocket depth - if your mattress is particularly deep (over 30cm), check the sheet's pocket depth accommodates it before ordering. |
| Does the fitted sheet need to accommodate a topper? | If you use a thick mattress topper, the combined depth of mattress and topper needs to fit within the sheet's pocket. Deep-fit sheets are available for this purpose. |
| What We Offer | Why It Matters to You |
|---|---|
| 50+ years of expertise | Honest advice on building a complete king size bedding setup - which tog to choose, which protector to pair, how to layer correctly |
| Every king size bedding category covered | Duvets, toppers, protectors, sheets, duvet covers, pillows, pillow protectors, and weighted blankets all in one place |
| Free UK delivery on orders over £100 | No hidden delivery charges on the vast majority of orders. Some remote postcodes may incur a surcharge - see our delivery page for details. |
| Price Promise Guarantee | We'll match any like-for-like price you find elsewhere |
| Interest-free finance available | Spread the cost on eligible orders - see our finance page for terms |
| Expert advice, 7 days a week | Real people via phone, chat, or in-store - no scripts, no pressure |
| Rated Excellent on Trustpilot | Real feedback from verified customers across thousands of orders |
Not sure which king size bedding products you need, or how to layer them correctly? Our team can help you put together a complete setup. Chat online, call us, or visit our showrooms in Cheshire and Greater Manchester. We're open seven days a week.
| How to Reach Us | What to Expect |
|---|---|
| Live chat | Fast responses for quick questions. Available during opening hours. |
| Phone - 01928 242829 | Speak directly with a sleep expert. Best for advice on building a complete king size bedding setup. |
| In-store (Cheshire / Greater Manchester) | See bedding options in person. See our store locations. |
| Help Centre | Buying guides and FAQs available 24/7. Visit our help and advice section. |
| Question | Answer |
|---|---|
| What size is king size bedding? | A king size mattress measures 150 x 200cm. A king size duvet measures 225 x 220cm - wider and longer than a double duvet to give generous overhang on both sides of the bed. Fitted sheets, mattress toppers, and mattress protectors must match the mattress at 150 x 200cm. Always check the listed dimensions on individual products before ordering. |
| Can I use double bedding on a king size bed? | Not if you want it to fit correctly. A double duvet at 200 x 200cm leaves far less overhang than a king size duvet on a king size bed, and will be pulled off one side overnight when two people are sleeping under it. Fitted sheets and mattress protectors in double size will not cover a king size mattress fully. Always order king size products for a king size bed. |
| Do I need a king size pillow? | Pillow size is not determined by bed size - it is determined by your sleep position, shoulder width, and fill preference. Standard pillows (48 x 74cm) and large pillows are both used on king size beds. See our pillows guide for advice on choosing the right pillow for your sleep position. |
| What king size duvet tog do I need? | It depends on how warm or cold you sleep and the season. For everyday use in a centrally heated home, 10.5 tog suits most people year-round. If you sleep warm, 4.5 tog or a cooling fill works better. If you feel cold, 13.5 tog gives more warmth. An all seasons duvet gives flexibility across the year. See our king size duvets for the full range. |
| Do I need a mattress protector on a king size bed? | Yes - a mattress protector is recommended on any bed. It protects the mattress from moisture, allergens, and general wear, and most mattress manufacturers require one to keep the warranty valid. See our king size mattress protectors. |
| What is a deep-fit fitted sheet? | A deep-fit or extra-deep fitted sheet has a deeper elasticated pocket - typically 30cm or more - designed to accommodate thicker mattresses or a mattress and topper combined. If your mattress is particularly deep or you use a thick topper, check the pocket depth on the sheet before ordering. Browse our deep fitted sheets. |
| Do you offer free delivery on king size bedding? | Free UK delivery is included on orders over £100, which covers the vast majority of our king size bedding range. Some individual products below this threshold may have delivery charges - check the individual listing. Some remote postcodes may incur an additional charge. See our delivery page for full details. |
| Can I buy king size bedding on finance? | Yes. Interest-free finance is available on eligible orders. See our finance page for full details on terms, eligibility, and how to apply. |
