(3) Where, after consideration of any observations submitted to the relevant designated awarding body under subsection (2), that body continues to consider that paragraph (a) or (b) of subsection (1) applies, it shall withdraw its approval of the procedures established by the linked provider under section 27, by notice in writing addressed to the linked provider, from such date (not earlier than the date of service on the linked provider of the notice of withdrawal) as it considers appropriate and as is specified in the notice.