Re: But think of the children!!
Within the NHS, there are differing levels of security on data systems.
All personnel can only log into the system with a valid ID smartcard.
Differing levels of access exist depending upon staff position.
Hospitals cannot access GP data!
GPs' cannot access secondary-care systems!
I have no idea about police access to information, except to note that there are frequent prosecutions of personnel for illegally accessing data.
Both police and NHS systems leave an audit trail, and both are regularly checked.
However: shit ' appens