Gareth Peirce is a British solicitor and a senior partner of Birnberg Pierce and Partners. She is a tenacious defender of human rights, representing those accused of terrorist activity first in Northern Ireland and more recently at Guantanamo Bay. Her clients include British citizens Moazzam Begg and Shakar Aamer. In 2010 she published Dispatches from the Dark Side: On Torture and the Death of Justice
, a book of essays detailing her defense of Muslims accused of terrorism.