All celebrity sound-a-like content produced by Computertones Ltd is unofficial. The content does not carry the approval or endorsement of the personality involved or any broadcasting institution. Voices are produced by professional impressionists.
Thus in all advertising and promotion of the celebrity sound-a-like content it is a legal requirement
1. For print and online advertising, there is a clear disclaimer with the statement "voices produced by impressionists, all sounds do not carry the approval or endorsement of the personality involved or any broadcasting institution.
2. For radio and television advertising the voice artist must actually say that the sounds are impressions and not endorsed by any celebrity.