He met the girl in a nearby pub and 'bumped' into her before they went to the train station.
Mr Jones said: 'He says that the area was not where he usually frequents.
British Transport Police have issued an appeal to try and trace the red-headed woman but are yet to find her.
They said today there has been no update in the investigation in 'the Hackney Down incident' and urged members of the public to come forward with information.
Footage of the couple went viral online, with images shared by thousands of Twitter users and uploaded to You Tube.
They were filmed by a woman as they stripped off for sex on August 26, Highbury Corner Magistrates' Court heard.
'She's definitely been off the grid, she's hanging out with some bad elements and people that are involved with prostitution, some sexting, drugs,' Brad Perkins of with Your Eye Investigations said.
Richardson told officers that he had not been socialising much with his friends and had been drinking substantial amounts of rum.
He was also ordered to pay £85 court costs and a victim surcharge of £85.
The mother of a 15-year-old girl who has been missing for a week in Texas fears she may have been kidnapped by sex traffickers.
Zara Khan, prosecuting, said: 'A member of the public has recorded this on her mobile phone which shows an incident between the defendant and an unknown female.'They were having sexual intercourse on the platform.
The lady that took the video footage said that she was shocked an outraged.'Certainly, the offence takes place early in the morning, there were members of the public in and around the location.'It was daylight and it was during the school holidays and on a route that takes you to Stansted Airport.'Subsequently Mr Richardson was arrested and he did make certain admissions in interview.'He said that he had been drinking that day.