Absolutely, Welfarite.
This should even be above and beyond the Data Protection Act, and be in the realms of the right of people/patients/service users to have their confidentiality respected by healthcare professionals, if social workers or other health care professionals were involved.
This is an ethical (and can be a legal) duty of health care professionals. (for example, legal advise may well need to be sought before confidentiality may be breached.)
This is unless there is a very good reason to breach confidentiality, which even then, is only permitted under very particular circumstances, and should only involve limited information if at all possible.
I am unsure what the case is here, in this incident, as someone seems to have disclosed what appears to be confidential information to the OP
Nicola