Copyright Act, 1956 (United Kingdom)/Schedule 2
Duration of Copyright in Anonymous and Pseudonymous Works
1. Where the first publication of a literary, dramatic, or musical work, or of an artistic work other than a photograph, is anonymous or pseudonymous, then subject to the following provisions of this Schedule—
2. The preceding paragraph shall not apply in the case of a work if, at any time before the end of the period mentioned in that paragraph, it is possible for a person without previous knowledge of the facts to ascertain the identity of the author by reasonable inquiry.
3. For the purposes of this Act a publication of a work under two or more names shall not be taken to be pseudonymous unless all those names are pseudonyms.