Detectives have asked for the public’s help in identifying potential witnesses to the stabbing on a train at Beckenham Junction. 

Rakeem Thomas, 19, was charged with attempted murder after the shocking incident which took place on March 27. 

British Transport Police has now released images of four men who may have critical information which could assist the ongoing investigation.   

Investigating officer, Detective Sergeant Marc Farmer said: “We are releasing these images of four people thought to be witnesses in an attempted murder investigation. 

“I would like to stress these people are not suspected of any criminal activity, but they may have important information that will help our investigation.   

“If this is you, or you know anyone pictured, please text 61016 or call 0800 40 50 40 quoting reference 397 of 27 March." 

You can also report anonymously though independent charity Crimestoppers on 0800 555 111.