A UK king size bed takes a mattress measuring 150 x 200 cm, or roughly 5ft by 6ft 6in. That is 15 cm wider and 10 cm longer than a standard double, giving each person noticeably more space. The frame around the mattress adds extra width and length depending on its style, and king size beds come in a wide range of designs, from platform and sleigh frames to storage and floating beds, finished in wood, high gloss, metal, fabric or faux leather.
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Wood remains a classic choice for a bed of this size, and our range of modern king size wooden beds UK shows how much variety there is in grain, colour and form. A king size bed is usually the largest piece in the room, so it naturally shapes how wardrobes, chests and bedside cabinets from our bedroom furniture UK sale collection will sit around it. Below we look at sizes, styles and finishes in turn.
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UK bed sizes are based on mattress dimensions. It helps to see a king size in context with its neighbours.
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The extra 10 cm in length matters to taller people, whose feet can overhang a double, while the extra width reduces disturbance when one partner moves in the night. For many couples, a king size is the point at which a bed starts to feel genuinely roomy without dominating an average sized main bedroom.
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A common source of confusion is that a European king size mattress is often 160 x 200 cm, wider than the UK standard. US sizes differ again. If a mattress or frame comes from a range that uses European sizing, it will not fit a UK king frame correctly. When choosing, always confirm that both the frame and the mattress use UK king size dimensions. Bedding follows the same rule, so make sure fitted sheets are sized for a UK king.
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The mattress size is fixed, but the frame can add very different amounts around it. A slim metal or wooden frame might add just a few centimetres to each side. An upholstered bed with a padded surround and a deep, winged headboard can add 20 cm or more to both width and length. That is why two king size beds can take up noticeably different amounts of floor.
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When planning, work from the external dimensions of the frame. Allow around 60 to 70 cm of walkway beside the bed where possible, and room at the foot for wardrobe doors or drawers to open. Do not forget the route into the room: headboards often arrive as a single piece, so measure stairwells, landings and doorways as well.
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Platform beds have a low, flat base with the mattress sitting on slats close to the frame’s top edge. Their clean lines suit modern and Japanese inspired interiors, and their low height helps a room feel more spacious. Many have a simple headboard or none at all.
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These frames are covered in fabric or faux leather, with a padded headboard that may be panelled, channel stitched, buttoned or winged. They are comfortable to sit up against and create a soft, inviting focal point. Tall versions suit high ceilings in period homes.
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Sleigh beds have a curved headboard and footboard that sweep outward, recalling a traditional sleigh. They have a strong, classic presence and work well in larger bedrooms, since the footboard adds to the overall length.
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King size storage beds include ottoman designs, where the platform lifts to reveal a large compartment, and frames with side or foot end drawers. At this size, the storage capacity is considerable, which helps in homes short of cupboard space.
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Floating beds have a recessed base that makes the frame appear to hover above the floor. They suit minimal, contemporary rooms and help a large bed feel lighter. Some include soft lighting beneath the frame.
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Oak brings a warm, honey tone with visible grain and suits Scandinavian, rustic and modern schemes. Walnut is darker and richer, pairing well with brass, leather and deep colours. Painted wood in white, grey or soft green suits period and coastal bedrooms. Solid wood is durable and ages well, picking up character over time, while veneers and wood effect finishes offer a similar look with less weight.
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High gloss finishes are smooth and reflective, bouncing light around the room. That is especially useful in north facing bedrooms or rooms with small windows. White gloss feels crisp and fresh, while grey and black gloss feel sleek and modern. Gloss wipes clean easily, though fingerprints show more on darker shades. Our range of king size high gloss beds UK includes a variety of colours and headboard styles.
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Metal frames are slender and strong, giving a large bed a lighter appearance. Matt black suits industrial and contemporary rooms, while brushed brass and gold add warmth and a hint of glamour. Our selection of king size metal beds UK shows both simple and decorative designs.
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Fabric remains the most popular finish for king size beds. Linen weaves feel relaxed and natural, velvet adds richness and catches the light, and boucle brings texture and softness. Mid tones such as stone, mushroom and grey are practical for everyday use, while deeper shades like forest green or navy create a statement.
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Faux leather is wipe clean and structured, holding crisp lines well. It suits contemporary rooms in black or white, and warmer schemes in tan or brown. It is a practical option in homes with pets or young children.
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Light is a good starting point. In darker rooms, pale wood, white gloss or light fabric help reflect what daylight there is. In bright rooms, you have more freedom to use deeper finishes such as walnut, black metal or dark velvet without the space feeling heavy.
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Consider existing furniture too. If your wardrobes and chests are oak, an oak or upholstered bed in a warm neutral will sit easily alongside them. If they are white gloss, a gloss or pale fabric bed continues the look. Contrast can also work well: a dark walnut bed against pale walls and floors makes a confident focal point.
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A king size bed works comfortably in many UK main bedrooms, but it is worth being honest about the space. In a room of around three metres square, a king size frame with a slim profile can fit with modest walkways either side. A deeply upholstered frame in the same room may feel tight. In smaller second bedrooms, a double is often the better choice, leaving more room for storage and movement.
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Ceiling height plays a part too. A tall headboard in a room with a standard or low ceiling can feel imposing, while a lower headboard keeps the proportions balanced. Sloping ceilings in loft conversions usually call for a low or platform style, positioned so you are not sitting up beneath the slope. For a full breakdown of measurements, our guide to UK king size bed dimensions explained covers frame, mattress and room sizes in detail.
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Colour trends shift over time, but a well chosen finish can last for many years. Our article on UK bedroom furniture colour trends from beige to black explores how palettes are changing and how to choose tones that will age gracefully.
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A larger bed carries bedding beautifully, but it also shows when proportions are off. Use a duvet sized for a UK king, add two or three layers of pillows and finish with a throw across the lower third of the bed. A rug that extends well beyond the sides frames the bed and softens the floor underfoot. Matching lamps on either side bring balance, which suits the symmetry of a king size bed.
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We offer free delivery to most UK mainland postcodes, and you can explore beds, bedside furniture and storage for every room at Furniture in Fashion.
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A UK king size mattress is 150 x 200 cm. The frame adds extra width and length depending on its design, so always check the external measurements.
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A super king is 180 x 200 cm, 30 cm wider than a king size. Both are the same length, but a super king needs a considerably larger room.
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High gloss and faux leather are the simplest to wipe clean. Mid tone woven fabrics are also practical, as they hide everyday marks well.
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Not reliably. European king sizes are usually wider, so fitted sheets may be loose. Choose bedding sized for a UK king for the neatest fit.
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