The corporate identity of TfL and its transport divisions is based on the roundel design which first appeared at Underground stations in the early 1900s.
Each division, or mode, has its own roundel. These form key elements of their corporate identity, communicating that while they are part of TfL they also operate independently.
The controlled and consistent application of TfL’s corporate identity relies on control of the roundel’s distribution and use.
Strict rules exist about how the roundel can be implemented, and copyright exists on its reproduction. Anyone wishing to use any of TfL’s modal roundels or other corporate logos will need to apply for permission.