Have you seen these two men? (Credit: British Transport Police)
The suspects approached the couple and repeatedly punched the boy at around 6.30pm on Sunday, 25 July.
They also attacked the girl when she tried to intervene and then stole the boys bag.
The male victim followed them along the train and retrieved his bag after they continued to fight him.
Both suspects got off the train at Romford station.
“Officers believe the men in the CCTV images may have information which could help their investigation,” said a spokesperson for British Transport Police.
If you recognise them, or have any information, please contact BTP by texting 61016 or calling 0800 40 50 40 quoting reference number 476 of 25/07/21.
Alternatively, you can call Crimestoppers anonymously on 0800 555 111.
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