Tom Grater International Film ReporterUK cinemas have officially begun selling tickets for Christopher Nolan’s Tenet, as of midnight today local time.The movie is being heralded as the saviour of the big screen and exhibitors have nervously been monitoring the situation following several dates shifts which have seen it move later and later in the summer as the pandemic continues to disrupt the entire film ecosystem.However, Warner looks to have settled on an international-led roll out commencing