Author Sally Rooney said she did not travel to the UK to collect a book prize this week as she was concerned she may be arrested over her support of British group Palestine Action.
The Irish novelist has been donating money to the group, which was proscribed as a terrorist organisation by the UK government in July, after activists broke into an RAF base and damaged two military aircraft earlier this year.
Palestine Action has been targeting arms companies since war broke out in Gaza in 2023.
Rooney, 34, who won a Sky Arts award for novel Intermezzo, said in a statement read out for her at the ceremony: "I'm advised that I can no longer safely enter the UK without potentially facing arrest".