Police have released an image of a man they want to speak to in connection with two indecent exposure incidents on buses.
Officers have made an appeal after linking two separate incidents on different routes in London earlier this year.
Police said on 8 February, at around 2.40pm, a man was sitting on the bus X140 travelling toward Harrow, and exposed himself through a hole in his trousers.
Then on 7 August, at around 6:35pm on bus 282 near Moat Farm Road, Northolt, the same man was sitting on a bus and exposed himself in the same manner.
Sergeant Matthew Brown, from the Roads and Transport Policing Command, said: “I am asking anyone who recognises the man in this image to come forward and speak to police.
“Exposure is treated as a serious offence and no one should be made to feel uncomfortable when simply using public transport.
“If you know this man, or have any information which could assist this investigation, please get in contact immediately.”
There have been no arrests and enquiries continue.