The man attended a north London police station yesterday.
Detectives appealed to the public after two incidents; one on Thursday, 14 February 2019, on a 254 bus and the other on Tuesday, 4 February 2020, on a 253 bus.
The 26-year-old man was arrested on suspicion of sexual assault and attempted sexual assault.
He attended a north London police station yesterday.
The man has been bailed pending further enquiries to a date in early June.
For more on this story, and the latest on our other local and national news, listen to Time 107.5FM.
Tags: Newham, Hackney