Child Protective Services
From Tardis Wiki, the free Doctor Who reference
Esther Drummond reported her sister, Sarah, to Child Protective Services. They took Alice and Melanie away from her to be put into foster care. (TV: Escape to LA)
Brent Uden, a man who worked for Child Protective Services, was concerned about First Doctor companion Bobby Zierath's wellbeing. (PROSE: The Schoolboy's Story)