British Transport Police has released images of a man, who is believed to have assaulted a 30-year-old woman carrying a pushchair, which left her two-year old son with a fractured collar bone at Highams Park station, in Chingford on June 23.
Anyone with information is asked to contact British Transport Police (BTP) on 0800 40 50 40 quoting background reference B9/LNA of 24/06/2013. Information can also be passed to the independent charity Crimestoppers, anonymously, on 0800 555 111.
More top news
The 20-year-old was found fatally wounded on Roth Walk, near Finsbury Park, north London at around 3am on Saturday, Scotland Yard said.
Police have arrested a man wanted in connection with a burglary at the home of pensioner Richard Osborn-Brooks.
The rally comes after it emerged that the Home Office destroyed thousands of landing cards documenting the arrival of windrush-era migrants