52.—(1) A breach of the duty owed in accordance with regulation 51 (duty owed to economic operators) is actionable by any economic operator which, in consequence of the breach suffers, or risks suffering, loss or damage.
(2) Proceedings by an economic operator in respect of a breach of duty referred to in paragraph (1) must be brought in the Sheriff Court or the Court of Session.
(3) Proceedings under this regulation may not be brought unless—
(a)the economic operator bringing the proceedings has informed the contracting entity of—
(i)the breach or apprehended breach of the duty owed to it in accordance with regulation 51 (duty owed to economic operators); and
(ii)of its intention to bring proceedings under this Part in respect of that breach or apprehended breach; and
(b)the proceedings are brought in accordance with paragraph (4).
(4) For the purpose of paragraph (3)(b), proceedings must be brought—
(a)in the case of proceedings seeking an ineffectiveness order (as defined in regulation 55 (ineffectiveness orders))—
(i)if paragraph (5) applies, within 30 days from the relevant date referred to in that paragraph; and
(ii)in any other case, within 6 months from the date of the concession contract being entered into; and
(b)in any other case, within 30 days beginning with the date when the economic operator first knew or ought to have known that grounds for starting the proceedings had arisen unless the court considers that there is a good reason for extending the period within which proceedings may be brought, in which case the court may extend that period up to a maximum of 3 months from that date.
(5) For the purpose of paragraph (4)(a)(i), this paragraph applies if—
(a)the contracting entity has sent a concession contract award notice to the Official Journal in accordance with regulation 35 (form and matter of publication of notices), including reasons for its decision to enter into the concession contract without prior publication of a concession notice, in which case the relevant date is the date of publication of the notice in the Official Journal; or
(b)the contracting entity has by notice in writing informed all tenderers concerned and all candidates concerned (if any) of its decision in relation to the award of the concession contract and the notice includes the information referred to in regulation 49(2)(b) or (4)(a) (notice of decision to award a concession contract) as the case may be, in which case the relevant date is the date of sending of the notice.