All television programmes have copyright and other rights issues associated with them. For some genres of programmes—such as drama and entertainment—the actors, writers, and musicians involved in a production all have underlying rights. In the past, these rights were defended rigorously—permission could even be denied by a contributor for the repeat or re-use of a programme. Talent unions were highly suspicious of the threat to new work if programmes were repeated; indeed, before 1955 Equity insisted that any telerecording made (of a repeat performance) could only "be viewed privately" on BBC premises and not transmitted.