Three of the biggest U.S. television broadcasters have blocked their shows from Google Inc’s new Web TV service, throwing a wrench into the company’s plans to expand from computers to the living room.

Spokespeople from Walt Disney Co and NBC Universal confirmed on Thursday that the companies blocked access to its broadcast TV shows from Google TV. Disney owns network and cable TV businesses ABC and ESPN.

News Corp’s Fox is also considering blocking access to shows on its Website, but a decision has not yet been made, a source familiar with the matter said.

CBS has blocked access to full-length episodes of their programs, including popular shows like “CSI: Crime Scene Investigation,” according to a report in the Wall Street Journal on Thursday.