Media mogul and coalition of stars join the growing battle over tech firms using creative works to train programs

It is an unlikely alliance: billionaire media mogul Rupert Murdoch and a panoply of leading artists including the Radiohead singer, Thom Yorke, the actors Kevin Bacon and Julianne Moore, and the author Kazuo Ishiguro.

This week they began two very public fights with artificial intelligence companies, accusing them of using their intellectual property without permission to build the increasingly powerful and lucrative new technology.