Cartoon Network UK and Ireland will be airing new episodes of Justice League Action from Saturday 1st July at 7am. ™ & © 2017 Cartoon Network. A part of Turner.br Cartoon Network UK and Ireland will be airing new episodes of Justice League Action from Saturday 1st July at 7am. ™ & © 2017 Cartoon Network. A part of Turner.brThanks to Regular capital: CN UK Promos & Spongebranded.brJUSTICE LEAGUE ACTION producers gave Comic-Con 2016 attendees a first look at the highly anticipated Warner Bros. Animation series coming soon to Cartoon Network. During the shows Thursday,.