(1)  No person, except as required to do so under this Act or another Act, may be required or authorised –

(a) to take or subscribe the oath of allegiance, supremacy or abjuration; or

(b) to take or subscribe any oath substituted for the oath of allegiance, supremacy or abjuration; or

(c) to make or subscribe any affirmation or declaration to the like effect of any oath referred to in paragraph (a) or (b) .

(2)  Subsection (1) applies despite any charter, or custom, to the contrary.