The 17-year-old from Dagenham died after suffering stab wounds in Amy’s Park, Harold Hill, in March.
Manuel Petrovic, 20, of Highfield Road, Collier Row, a 16-year-old boy from Romford, and Svenson Ong-a-kwie, 19, of Hillfoot Road, Collier Row are all been charged with murder.
A 17-year-old boy from Barking is charged with murder and possession of a prohibited weapon.
All four appeared at the Old Bailey this morning via video link for a plea and trial preparation hearing.
They all denied the charges and are due to go on trial on Monday, 2 September.
Tags: Romford, Havering, Harold Hill, Jodie Chesney