Three people have been charged with affray in connection with an alleged attack on a couple on a Dartford-bound train from central London.
Alan Kinsella, 47, Ben Kinsella, 25, and Amy Kinsella, 20, of Raleigh Close, Erith, were arrested and interviewed under caution on Wednesday, July 2.
British Transport Police (BTP) issued a witness appeal on June 25 in relation to an attack.
PC Jason Weston-Collinson, leading the investigation, said: “I would like to thank the media for their extensive coverage of this appeal and the public for their assistance.”
The three accused people have been released on police bail to appear at Bexley Magistrates' Court on July 15.