Moving to London comes with a long list of adjustments. Some expected (like driving on the left), and some that catch you off guard. Mattress sizes fall firmly into the second category. It’s the kind of detail you don’t think about until you’re standing in a shop, staring at labels that don’t quite match what you’re used to.
If you’re relocating from the US, understanding how mattress sizes differ in the UK can save you time, money, and a fair bit of frustration. Checking a reliable mattress size guide before you move can also help you visualise the differences and plan accordingly.
The Names Might Sound Familiar, But They’re Not the Same
At first glance, you might feel reassured seeing familiar terms like “King” and “Queen.” Unfortunately, this is where the confusion begins. In the UK, these names don’t align with US dimensions.
For example, a UK King is roughly 150 x 200 cm (about 59 x 79 inches), which is actually closer in width to a US Queen, but slightly shorter in length. Meanwhile, a US King is significantly wider at 76 inches. Something you simply won’t find as standard in most London homes.
Even more confusing, the UK doesn’t really use “Queen” in the same way. What Americans call a Queen (60 x 80 inches) doesn’t have a direct one-to-one equivalent. You’ll often be choosing between a UK Double (smaller) or a UK King (slightly different proportions).
London Homes Change the Equation
Part of the reason for these differences comes down to space. London properties, especially flats, tend to be more compact than homes in the US. That extra width of an American King bed can quickly dominate a bedroom in a typical London flat.
This is why UK sizing tends to run narrower. A UK Double (135 x 190 cm) is often the default for couples in smaller spaces, even though it’s noticeably tighter than a US Full.
Before you ship your current mattress across the Atlantic, it’s worth asking whether it will realistically fit not just in the room, but also through narrow staircases, tight hallways, and sometimes surprisingly small doorways.
Bedding Won’t Translate Either
Let’s say you do bring your US mattress with you. Another issue quickly follows: bedding.
UK duvet sizes and fitted sheets are made to fit UK mattresses. A US Queen sheet won’t properly fit a UK King, and vice versa. Even if the difference sounds small on paper, it’s enough to make sheets bunch up or slip off corners.
Duvets are another adjustment. Instead of the US system (Twin, Full/Queen, King), the UK uses sizes like Single, Double, King, and Super King, but again, with different measurements.
Most people find it easier to switch entirely to UK sizing rather than trying to mix and match.
The “Super King” Isn’t What You Think
If you’re hoping to replicate that spacious American King bed, you might be drawn to the UK Super King. At 180 x 200 cm (about 71 x 79 inches), it’s the largest widely available option.
It’s close but still not quite the same. You gain a bit of width compared to a US Queen, but you’re still shy of a full US King. For many London homes, though, it’s the biggest practical option without overwhelming the space.
Mattress Depth and Style Differences
Another subtle difference is mattress depth. UK mattresses can sometimes be slimmer than their US counterparts, particularly in older properties where bed frames are designed with lower profiles in mind.
You’ll also notice differences in firmness preferences. UK mattresses often lean slightly firmer, and divan bases (a type of upholstered bed base with built-in storage) are far more common than the slatted frames many Americans are used to.
These aren’t deal-breakers, but they can make your first few nights feel a little different.
Should You Bring Yours or Buy New?
For most people moving to London, buying a new mattress locally ends up being the simpler choice. Shipping a mattress internationally is expensive, and once you factor in sizing differences, it often creates more problems than it solves.
Buying in the UK means:
- Your mattress will fit local bed frames
- Bedding will be easy to find
- Delivery is usually faster and simpler
That said, if you’re particularly attached to your current mattress (or have specific comfort needs), it can still be done but you’ll just need to plan carefully.
A Small Detail That Makes a Big Difference
It might seem like a minor detail in the grand scheme of an international move, but mattress sizing can have a surprisingly big impact on how quickly your new place feels like home.
Understanding the differences ahead of time means fewer surprises, better sleep, and one less thing to troubleshoot after a long day of unpacking. And in a city as fast-paced as London, getting a good night’s sleep isn’t just a luxury, it’s essential.
