US comedian Joan Rivers was quizzed by officers from the UK Border Agency during a fishing trip in Faversham, Kent Online reports.
The agency had received a tip-off that a suspicious group of people in two fishing trawlers had been seen at Harty Ferry.
But the officers soon discovered the group were Joan Rivers, her daughter and a camera crew filming the comic's reality show.
Joan was being filmed visiting her friend The Countess Sondes of Lees Court Estate.
Speaking after the incident, Ms Rivers said: "Even though we were innocent, I am so sorry they didn't arrest us. I love Englishmen and they were very cute!"