Campaigners say the murders of two women in Tottenham underline long-running failures in how the justice system protects sex workers.
A new study says hundreds of millions of pounds may have passed through short-lived firms registered as salons, hairdressers and corner shops.
Courts in separate cases heard how explicit images were uploaded without consent and how one woman was forced into running an account for her abuser.
Parents and campaigners say mandatory cameras could help protect babies and toddlers after a long-running abuse case in West Hampstead.
Criminals are exploiting a cash deposit system built for convenience, with police saying ordinary branches have become a major laundering route.