The teenager, who was 16 at the time of the incident, initially appeared at a preliminary hearing before Judge Michael Simon at Luton Crown Court in September.
Since then, the case has been moved to Norwich Crown Court – also about 100 miles from Luton.
Southwark, where the latest hearing took place on 4 December, has been overseeing some cases usually listed at Harrow Crown Court in north-west London.
The court in Harrow has been closed after Raac (reinforced autoclaved aerated concrete), which is potentially dangerous, was found in the building.