11. Where accessible personal information—
(a)is held by a housing authority for the purposes of the prevention or detection of crime or the apprehension or prosecution of offenders and the giving of access would be likely to prejudice any of those purposes;
(b)consists of information in respect of which a claim to confidentiality as between client and professional legal adviser could be maintained in legal proceedings; or
(c)consists of information supplied to the housing authority subject to a legal obligation that it shall not be disclosed,
the housing authority shall not give access to that information.