Before preparing or reviewing a plan in accordance with section 4 the Commission shall—
consult such persons having knowledge or experience relevant to the Commission's functions as the Commission thinks appropriate,
consult such other persons as the Commission thinks appropriate,
issue a general invitation to make representations, in a manner likely in the Commission's opinion to bring the invitation to the attention of as large a class of persons who may wish to make representations as is reasonably practicable, and
take account of any representations made.