19. Where a supplier is registered on the official list of recognised suppliers in a relevant State which maintains such lists and in which the supplier is established and the supplier submits to the contracting authority a certificate of registration issued by the authority administering the official lists which specifies the information submitted to that authority which enabled the supplier to be registered and which states the classification given, the contracting authority, to the extent that the certificate deals with the grounds referred to in regulations 14(1)(a) to (e), (h) and (i), 15(1)(b) and (c) and 16(1)(a)—
(a)shall accept the certificate as evidence that the supplier does not fall within the grounds specified in regulations 14(1)(a) to (e), (h) and (i) and shall not be entitled to require the supplier to submit such information relating to those grounds as is specified in regulation 14,
(b)shall not be entitled to require the supplier to provide information specified in regulations 15(1)(b) and (c) and 16(1)(a), and
(c)shall not be entitled to seek any supplementary information in accordance with regulation 17 above in relation to the matters specified in subparagraphs (a) and (b) above.