11.—(1) Where an insured person receives an assignment of insurer notice and, within the time period stipulated in the assignment of insurer notice, gives notice in writing to the Board that he wishes to be insured under the Scheme with his preferred appointed insurer, he shall cease to be insured under the Scheme with his existing assigned insurer and shall instead be insured under the Scheme with his preferred appointed insurer from —
(a)
the date on which the notice is received by the Board; or
(b)
the date indicated by the insured person on the notice as the date from which he wishes to be insured under the Scheme with his preferred appointed insurer,
whichever is the later.
(2) Where the time period stipulated in the assignment of insurer notice has lapsed, an insured person who gives notice in writing to his preferred appointed insurer that he wishes to be insured under the Scheme with his preferred appointed insurer, shall cease to be insured under the Scheme with his existing assigned insurer and shall instead be insured under the Scheme with his preferred appointed insurer from —
(a)
the date on which the notice is received by his preferred appointed insurer;
(b)
the date indicated by the insured person on the notice as the date from which he wishes to be insured under the Scheme with his preferred appointed insurer; or
(c)
in the case of an insured person suffering from a medical condition, the date his preferred appointed insurer approves his application,