Little research has been done into what social workers do in everyday child protection practice. This paper outlines the broad findings from an ethnographic study of face‐to‐face encounters between social workers, children and families, especially on home visits. The social work practice was found to be deeply investigative. Children's bedrooms were routinely inspected and were the most common place where they were seen alone. A high proportion of children were not seen on their own because they were too young and the majority of the time was spent working with parents and children together. Small amounts of time were spent with children on their own and some first encounters were so rushed that social workers did not even introduce themselves to the child. This arose from two key factors: firstly, organisational pressures from high workloads and the short timescales that social workers were expected to adhere to by managers and Government; secondly, practitioners had varying levels of communication skills, playfulness and comfort with getting close to children and skills at family work. Where these skills and relational capacities were present, social workers were found to have developed deep and meaningful relationships with some children and families, for whom it was apparent that therapeutic change had occurred.