Just under 750 cases of female genital mutilation were referred to the Met Police over the last five years, though prosecutors are still yet to make a conviction.
According to figures obtained by ITV News, 748 people have approached authorities with fears over victims or potential victims since 2013.
But only 37 cases have been referred to the Crown Prosecution Service in almost 10 years, and prosecutors have only managed to bring two cases to court. All of those resulted in acquittals.
Nearly half of all cases of FGM in England are believed to have been recorded in London.
Cris McCurley, a family lawyer who specialises in abuse cases and has worked with families affected, told ITV News she's "hopeful" more convictions will come.