Police investigating a report of public indecency on the underground are trying to identify a man who could help their enquiries.
The incident of outraging public decency occurred on board a south-bound Northern line service travelling from King’s Cross to Oval on Friday, December 18, at 3.18pm.
Officers believe the man in the image may have information which could help their investigation.
If you recognise him, or have any information, please contact BTP by texting 61016 or calling 0800 40 50 40 quoting reference 2000139889.
Alternatively, you can call Crimestoppers anonymously on 0800 555 111.