3.  In regulation 23 (persons by whom theory tests may be conducted)—

(a) in paragraph (1) omit sub-paragraph (d);

(b) in paragraphs (3) and (8) for “sub-paragraphs (b), (c), (d) or (e) of paragraph (1)” substitute “ sub-paragraphs (b), (c), (da), (db), (e) or (f) of paragraph (1) ”; and

(c) in paragraph (5) for “paragraph (b), (c), (d) or (e) of paragraph (1)” substitute “ sub-paragraphs (b), (c), (da), (db), (e) or (f) of paragraph (1) ”.