Irish folk singer Christy Moore has told of how he was held for two hours last Monday by British police at Holyhead under the Prevention of Terrorism Act 2002.
He was on his way to a series of concerts in England.
In a statement issued this afternoon, Moore said that he and his driver were held separately in two interrogation rooms.
"I found the whole experience threatening," he explained. "I was questioned about the contents of my briefcase. I was questioned about lyrics of songs and I was asked a lot of personal questions about members of my family and my children and about my home."
He added that he was given no explanation as to why he was being held and interrogated.
"Both myself and my driver have given full statements to the Ministry of Foreign Affairs and the Irish Ambassador to London," he said.