Police would like to speak to this man in connection with an exposure that took place at Acocks Green station.
At approximately 7.15pm on Tuesday 14 August, a man approached a 44-year-old woman at Moor Street Station as they waited to board the 7.25pm service to Acocks Green.
After boarding at Acocks Green, the man followed the victim to the station car park and exposed himself as she sat in her vehicle.
The man then caught the next service back to Birmingham Moor Street Station.
Officers would like to speak to the man in the CCTV images as they believe he may have information which could help the investigation.
Anyone with information is asked to contact British Transport Police by calling 0800 405 040 or texting 61016 with reference 306 of 19/09/2018.
Alternatively, you can contact Crimestoppers anonymously on 0800 555 111.