The Kings Head by Kelly Frost

1957, London. A gang of girls called the Kings rule the bomb-struck streets of Finsbury Park. When Harry, their unpredictable but charismatic leader, tries to encroach on the territory of the rival Seven Sisters gang, the Kings know they're in for a fight. Armed with flick knives and fists, they do battle in dancehalls and on football fields. But with the authorities closing in and conscripted boys returning to claim what was once theirs, the Kings must ask if they're willing to pay the price of loyalty. Bound by wild friendship and brutal competition, these young women will do anything to carve a space for themselves from the wreckage.