The Circle is said to be in jeopardy as bosses nervously await the celebrity contestants' coronavirus test results. It's said that Channel 4 bosses failed to book any back-up contestants, meaning there could be a major spanner in the works if any of the celebs test positive for COVID-19.The reality show, which centres around a social media platform called The Circle, is set to start filming a special edition with a host of famous faces this Sunday.