The Education (Teachers) Regulations 1993

Temporary employment of teachers of the visually impaired or hearing impaired (or both)

17.  A person may be employed at a special school as the teacher of a class of pupils who are—

(a) hearing impaired,

(b) visually impaired, or

(c) both hearing impaired and visually impaired,

notwithstanding that he is not a qualified teacher in accordance with regulation 14, 15 or 16(1), as the case may be, for the purpose of such employment if his employers are satisfied that it is his intention to acquire a qualification approved by the Secretary of State under regulation 14, 15 or 16(1), as the case may be, provided however that the aggregate period for which he has been employed, in one or more schools, as the teacher of such a class of pupils as are mentioned in sub-paragraph (a), (b) or (c), as the case may be, does not exceed three years.