Officers are appealing to identify the suspect so they can speak to him in connection with their investigation.
Detective Constable Matt James, from the sexual offences, exploitation and child abuse command, said: 'The woman is very shaken from her ordeal.'She was able to shout for help and use self-defence to flee from her attacker.'We are keen to identify the man in the CCTV footage so we can speak to him about the incident.
Another woman was assaulted at almost exactly the same spot after getting off a bus on her way home from work in August, the Standard can reveal.
A father-of-two said his wife - who the Standard is not naming - was returning home from work on August 4 at 11.30pm when a man appeared in a hoodie and armed with a baseball bat.
The cases of all four men who were found dead were not initially linked, but after further investigation they were referred to the Metropolitan Police homicide and major crime command on October 14 2015, shortly before Port was arrested.
The Metropolitan Police has referred its handling of the allegations to the Independent Police Complaints Commission.
“The police then later recovered the bag but her purse and phone had been stolen.
This is the shocking moment that an attacker stalked a young woman before pouncing on her and forcing her to the ground in an attempted rape.
The man followed the woman off the EL2 bus in Dagenham, East London, and walked behind her on the road before getting hold of her and pushing her over.
I had assumed they were a group of friends out for a day together, but we all split off in our twos and threes.
We had just got together because we had been able to make each other's life a bit easier, just for five minutes, just because we all needed a wee. It's female nature to overcome difficulties as a community, be it making the tea or getting the vote.