The attack on the lone child happened in Kendal Parade and Derwent Street between 3 and 4pm on December 6, 2024.
The suspect is described by police as a white male aged between 20 and 25 of stocky or “chubby” build.
He was wearing a green tracksuit with the hood up, blue trainers and possibly blue gloves.
The police believe he was clean-shaven and spoke with a foreign accent.
The full Metropolitan Police appeal reads: “We are appealing for witnesses after a child was assaulted resulting in a broken jaw.
“The attack happened on Friday 06th December 2024, between 3-4pm at Kendall Parade and Derwent Street, N18.
“The child was alone whilst walking home from school and required hospital treatment.
“The suspect is described as a white male, around 20-25 years old, stocky/chubby build, wearing a green tracksuit with his hood up, blue trainers, and may have been wearing blue gloves.
“It is believed that he is clean-shaven, and that he spoke with a foreign accent.
“If you have any information, please call us on 101 quoting reference number 6850/06DEC24.”
