Accoding to the Telegraph:
Clarkson, 54, is reported to have hit Oisin Tymon, 36, after being told no dinner had been laid on for the presenters after they finished filming for the BBC2 show one evening last week.
A source told The Sun: “Jeremy had a massive bust-up with one of the male show producers and he ended up smacking him in the face. Everyone was absolutely stunned.
“It was all over a catering issue. Jeremy just saw red and hit the assistant producer, who he blamed for not having organised the food.”
The Daily Mirror quoted a source saying: “They came to the end of filming after a long day and Jeremy discovered that no food had been laid on. He just saw red and hit the assistant producer, who he blamed for not having organised the food. He snapped.”
A source close to Clarkson insisted he was innocent and that “he didn’t punch anyone”.