Tom Grater International Film ReporterEXCLUSIVE: News yesterday that Warner Bros is taking Christopher Nolan’s Tenet off the theatrical release calendar has prompted further trepidation on UK shores, with the country’s major cinema chains scheduled to re-open the majority of their sites in just 10 days’ time.Tenet was set for August 12, but sources we’ve spoken to today are convinced that this won’t end up being the date, even if the studio opts for an unconventional international-led release,