Noun
ministerial code (usually uncountable, plural ministerial codes)
(UK politics) A code of conduct for government ministers in the United Kingdom.
Last week, however, Premier 's frontbench was compelled to make public documents they had lodged as part of the Ministerial Code of Conduct rules. Source: Internet
My advice is that the home secretary has not consistently met the high standards required by the Ministerial Code of treating her civil servants with consideration and respect. Source: Internet