2. Subject to regulation 4, in respect of a year each company referred to in paragraph 1 above is a producer of a class specified in an entry in Column 4 of the Table set out in Schedule 1 if—
(a)in that year and the preceding year he performs the relevant functions specified in Column 1 of that Table in relation to that entry; and
(b)in the preceding year he made supplies of the materials or products specified in Column 2 of that Table in relation to that entry of a class specified in Column 3 of that Table in relation to that entry;
and the other provisions of that Schedule, other than paragraph 3, shall also have effect for the purposes of determining to which class of producer such a company belongs.