The British Transport Police want to talk to the men in the CCTV images regarding two incidents at Windermere rail station.
The first happened at about 12.50pm on Friday, 18 March, as a 16-year-old boy was waiting to board a train at the station.
The boy stepped to the side to allow passengers off the train. One of the passengers verbally abused the boy and then punched him in the face.
The second incident happened on Saturday 26th April at 9.30am. A man boarded a train and entered the toilet. The driver, believing the man was trying to avoid paying for a train ticket. The man could not show he had bought a ticket and became aggressive, spitting in the driver's face.
PC Fernie said: “From investigations carried out to date I think it is likely the two men captured on CCTV are not local, but they may have links to the Windermere area.
I am, however, certain the men in the images have information about the incidents and I call on anyone who recognises them, or who has other information which could assist, to get in touch.”