A key storyline centers on the gay relationship between Sergeant Craig Gilmore and PC Luke Ashton, featuring homophobic taunts, assaults, grievances, and a controversial on-screen kiss that drew media backlash, making LGBTQ+ representation a focal point for several episodes. Another significant multi-episode arc (episodes 14-19) revolves around escalating racial tensions in Sun Hill, including a 'race war,' racist marches, petrol bomb attacks on officers, gang violence targeting the station, and police concerns over community racial divides, positioning systemic racial conflict as a major driver of drama leading into the Sun Hill fire event.

Additional elements include the introduction of black Superintendent Adam Okaro to reflect 'modern policing' diversity in leadership, episodes on human trafficking and immigrant smuggling highlighting exploitation of minorities, abortion subplots, and a new Community Safety Unit. Casting features diverse officers like Diane Parish as DC Eva Sharpe, organic for an East London setting but aligned with the revamp's emphasis on ethnic minority representation. While these do not form the foundational premise—stories remain grounded in routine policing and crimes—they significantly influence character development, personal lives, and major plotlines, with producer intent to push boundaries on gay storylines indicating ideological embedding rather than incidental inclusion.