You can find your CIW registration number on your registration certificate or on your CIW online account.
If it starts with a W, it will be 10 or 12 characters long and will look like one of these examples:
- W112345678
- W161234567
- W15/12345678
- W16/12345678
If your number has the forward slash character ‘/’, this must be included.
Newer CIW registration numbers are 11 characters in length and start with the letters CYM, for example: CYM00002456.