10(1)Periods of theoretical instruction in the fields of finance, law and accountancy may be deducted from the required period of professional experience, provided the instruction—U.K.
(a)lasted at least one year, and
(b)is attested by an examination recognised by the Secretary of State for the purposes of this paragraph;
but the period of professional experience may not be so reduced by more than four years.
(2)The period of professional experience together with the practical training required in the case of persons satisfying the requirement in paragraph 7 by virtue of having a sufficient period of professional experience must not be shorter than the course of theoretical instruction referred to in that paragraph and the practical training required in the case of persons satisfying the requirement of that paragraph by virtue of having completed such a course.