Admiral Sir Antony David Radakin, KCB, ADC is a senior Royal Navy officer. Since November 2021, he is the 24th Chief of the Defence Staff, the professional head of the British Armed Forces, succeeding General Sir Nicholas Carter. Radakin also served as First Sea Lord, the professional head of the Naval Service from June 2019 to November 2021. He was Chief of Staff, Joint Forces Command, from 2016 to 2018, and the Second Sea Lord and Deputy Chief of the Naval Staff from 2018 to 2019.