Clare Montgomery QC has been named as Matrix Chambers' new management committee head.
Montgomery takes over from Rhodri Thompson QC, who stood down at the chambers' AGM last week.
Matrix's constitution sets two-year terms for the management committee head. Montgomery will be the fourth individual to take the role for the set, which was formed in 2000.
Montgomery said she was "anxious to see Matrix continue to develop on a sound financial basis and to enhance its reputation for legal innovation and excellence".
She added: "I think the next few years will be important. Matrix will develop into a mature organisation that's able to deal flexibly with the challenges that will face us, including changes in the structure of the profession and in the legal services market."
Montgomery, one of The Lawyer's Hot 100 in 2005, acted for the liquidators of BCI before its case against the Bank of England collapsed. She appealed successfully against the murder conviction of Sîon Jenkins and in 1999 was instructed to defend General Pinochet in his extradition appeals.