At around 8.30pm on Sunday 13 March, a man approached a woman with a child near the ticket machine and engaged her in a conversation.
The woman and her child then walk to platform 1 of the station and the man follows. He attempts to use the vending machine nearby, then turns towards them and exposes himself.
He then walked back towards the ticket office at the entrance of the station.
If you recognise him, or have any information, please contact BTP by texting 61016 or calling 0800 40 50 40 quoting reference 658 of 13/3/22.
Alternatively, you can call Crimestoppers anonymously on 0800 555 111.