The LMS deplores the recent arrest of Professor Betül Tanbay of Boğaziçi University, Istanbul on spurious and absurd charges, but is relieved to have had news of her speedy and safe release. Professor Tanbay is an active and widely respected member of the international mathematical community, a former President of the Turkish Mathematical Society and a Vice-Chair Elect of the European Mathematical Society. We remain however concerned about the impact these charges and arrest may have on her future ability to travel abroad, in particular should she wish to enter the UK. For further information on the arrests and statements by the EMS and Amnesty International please see here and here