Quiz

While filming in the Heygate Estate in Walworth, South London during September 2009, neighbors complained about the way the film-makers were depicting gangs and turf wars.

The script was work-shopped at various schools in the South London area to make sure the teenage dialog sounded authentic.

The grime musicians Skepta and his brother JME were both considered for the role of Rager.

One of the intentions of director Mo Ali was to imbue his young cast with a superhero vibe.

Kaya Scodelario was able to revert to her original London accent for the film.