Channel 4 has reportedly postponed both Celebrity Hunted and Hunted due to the coronavirus pandemic.
The series sees contestants go on the run and attempt to avoid capture by a team of highly-skilled hunters equipped with cutting-edge surveillance technology.
"It's a blow to Channel 4 but they have to put the safety of contestants first," a source told The Sun.
"And with empty streets and half-desolate train and bus stations, they'd be sitting ducks for the hunters, which isn't great TV."
A Channel 4 spokeswoman said: "We are monitoring the situation very carefully and are looking at all options for producing the show safely. Filming of the series will begin when it is safe to do so."