The Education (Teachers' Qualifications and Health Standards) (Wales) Regulations 1999

Continued employment of existing teachers of pupils who are hearing or visually impaired or both

3.  A person who has satisfied the requirements of regulation 18 of the 1982 Regulations for employment at a special school as the teacher of a class of pupils who were both deaf or partially hearing and blind may, notwithstanding that he is not a qualified teacher for the purpose of regulation 13(1), be employed at a school as a teacher of a class of pupils who are both hearing and visually impaired.