US and UK bed sizes are different, both in terms of names and dimensions. These differences can be significant (we're talking several inches), so if you are buying from an international sleep brand, make sure you're choosing the right size for your bed frame.
If you're not sure what size your bed frame is, the best thing to do is break out the tape measure and find out. In this guide, we've covered the measurements of the standard bed sizes in both the US and the UK, with both inches and centimeters to help you understand the sizing.