Surrender of certificate of registration
21.—(1)  Subject to subsection (2), a registered provider may at any time surrender the registered provider’s certificate of registration to the Authority for cancellation.
(2)  The Authority may refuse the surrender of a certificate under subsection (1) if —
(a)the Authority is investigating any probable instance of contravention or non‑compliance that may result in a compliance order, or any probable instance of contravention, non‑compliance, act or omission that may result in a regulatory sanction; or
(b)the Authority has commenced proceedings under section 19 with a view to imposing a compliance order, or proceedings under section 20 with a view to imposing a regulatory sanction.