Freely, a new free streaming service backed by U.K. broadcasters BBC, ITV, Channel 4, and Paramount Global’s Channel 5, has launched.

Everyone TV, formerly known as Digital U.K., a joint venture of these broadcasters formed to “lead the evolution of free TV in the U.K.,” shared the news just after midnight London time on Tuesday. It had unveiled plans for the service in February, unveiling on Tuesday that “Freely is available through the next generation of smart TVs now on sale in stores and online.”

Stv and S4C, free-to-air public service broadcasters for Scotland and Wales, respectively, will also bring their channels and on-demand content to Freely.

The key target audience for Freely is internet-only homes, which amount to around 4 million in the U.K., but that number is growing rapidly, according to the streamer.

Freely is only available in the U.K. and only on Smart TVs,...