11In section 48 of that Act (complaints to employment tribunals)—
(a)in subsection (1) for “46 or 47” substitute “46, 47 or 47A”; and
(b)at the end insert—
“(5)In this section and section 49 any reference to the employer includes, where a person complains that he has been subjected to a detriment in contravention of section 47A, the principal (within the meaning of section 63A(3)).”