The explosion of fan productions brought about by affordable consumer equipment and animation programs (Prosumer equipment) with the digital revolution, along with the ease of distribution created by the Internet and Web 2.0, has prompted several studios to adapt their official policies and programs regarding fan films [REF].
Unlike many American TV shows, the British series Doctor Who allowed its writers to retain the rights to characters and plot elements that they created - most famously with Terry Nation's Daleks.