Gangs in Leyton have evolved from territorially based groups to more organized, profit-oriented entities focusing on drug markets.

Research into London gang culture, especially in Waltham Forest which includes Leyton, shows a significant shift over the last decade. Originally, gangs were defined by emotional ties to local postcodes and displayed their membership openly with colours and markings. Today, gangs prioritize business interests, particularly in drug markets, and often conceal their identities to avoid law enforcement attention. Violence has become more instrumental, used to protect business rather than just to assert dominance or identity.