Like the name would suggest, Metro tiles are inspired by the shape of the much loved tiles you would see across London Underground stations. Their classic brick shape would give any wall a modern cross retro aesthetic, which remains one of the most popular trends in interior design currently. Metro tiles can have a bevelled edge, giving a distinct geometric finish. Alternatively, some metro tiles have a flat surface, which gives a clean and crisp finish. There is also the option of crackled metro tiles, which have hairline cracks on the surface. These give the impression they have been lovingly used, and evoke a truly vintage feel to any room they're used in. The classic size of 100mm x 200mm still boasts the title of being the most popular of metro tiles, although the demand for larger metros has been increasing.