These are key principles which I would expact any service (whether voluntary or statuatory) supporting children and/or vulnerable adults to work from:
"The 6 Principles of Confidentiality
Justify the purpose(s)
Don’t use patient identifiable information unless it is absolutely necessary
Use the minimum necessary patient-identifiable information
Access to patient identifiable information should be on a strict need-to-know basis
Everyone with access to patient identifiable information should be aware of their responsibilities
Understand and comply with the law"