(1) A claim for compensation must be made to the Welsh Ministers in writing and be submitted so that it is received by them within a period of six months beginning with—
(a) in the case of compensation payable under section 1AD of the 1979 Act (compensation for loss or damage caused by interim protection), the date on which interim protection ceases to have effect;
(b) in the case of compensation payable under section 7 of the 1979 Act (compensation for refusal of scheduled monument consent) , the date of the notice of refusal or, as the case may be, the grant subject to conditions of scheduled monument consent;
(c) in the case of compensation payable under section 9 of the 1979 Act (compensation where works affecting a scheduled monument cease to be authorised), the date on which the works cease to be authorised;
(d) in the case of compensation payable under section 9ZL of the 1979 Act (temporary stop notice: compensation)—
(i) in the circumstances set out in section 9ZL(2)(a) of the 1979 Act, the date on which the temporary stop notice is first displayed; or
(ii) in the circumstances set out in section 9ZL(2)(b) of the 1979 Act, the date on which the temporary stop notice is withdrawn; or
(iii) in the circumstances where both paragraphs (i) and (ii) of sub-paragraph (d) apply the later of the dates applicable to those paragraphs;
(e) in the case of compensation recoverable under section 46 of the 1979 Act (compensation for damage caused by exercise of certain powers under this Act) , the date on which the damage was caused or, where the damage was caused as a result of a continuing act, the date when the act ceased.
(2) If the Welsh Ministers are satisfied that there is a reasonable cause for a failure to make a claim within the period set out in paragraph (1) they may at any time extend the period within which a claim may be made.