20. (1) Where the Council believes on reasonable grounds that a registered provider no longer satisfies a criterion specified in paragraph 19 (3) (a), (b), (c) or (d), the Council shall give the provider notice in writing—
(a) stating that the Council proposes to cancel the provider's registration for that reason;
(b) stating the facts and circumstances on which the Council's belief is based; and
(c) inviting the provider, within 28 days after the date of the notice, to show cause why the registration should not be cancelled.
(2) After the expiration of 28 days after the date of the notice, the Council may cancel the provider's registration for the reason mentioned in subsection (1).
(3) In making a decision under subsection (2), the Council shall have regard to any explanation provided in accordance with paragraph (1) (c) as to why the registration should not be cancelled.