Police are searching for an unnamed man after two women were sexually assaulted on the London Underground over the summer.
One woman was sexually assaulted on a busy Circle Line train at Liverpool Street on May 8 while another was assaulted on the Victoria Line at Seven Sisters on July 1.
British Transport Police revealed they are treating the two instances as linked as detectives investigate a series of sexual assaults on the tube.
Releasing the CCTV image, a BTP spokesperson said the man seen may have information which could help with officers investigation.
The man, with brown hair styled to one side, is seen wearing jeans and a blue shirt, carrying his coat over one arm and a bag over the other.
British Transport Police released this CCTV image asking if people recognise the man pictured, as he may have information which could help officers
One woman was sexually assaulted on a busy Circle Line train at Liverpool Street on May 8 while another was assaulted on the Victoria Line at Seven Sisters on July 1
The full BTP appeal read: Do you recognise this man?
Officers investigating a series of sexual assaults in May and July are today releasing this image in connection.
On 8 May, a woman was sexually assaulted on board a Circle line train at Liverpool Street station.
On 1 July, a different woman was sexually assaulted on board a Victoria Line train at Seven Sisters underground station.
Officers believe the incidents are connected, and that the man in the images may have information which could help with their investigation.
Anyone who recognises him is asked to contact BTP by texting 61016 or by calling 0800 40 50 40, quoting reference 612 of 1 July.
Alternatively, you can contact Crimestoppers anonymously on 0800 555 111.