Heather Carol Hallett, Baroness Hallett,, is a retired British judge of the Court of Appeal and a crossbench life peer. The first woman to chair the Bar Council and the fifth woman to sit in the Court of Appeal, Hallett led the independent inquest into the 7/7 bombings. In April 2019, she was appointed Chair of the Security Vettings Appeal Panel. In December 2021, she was announced as the chair of the public inquiry into the UK Government's handling of the COVID-19 pandemic. On 29 June 2022, the Government accepted Baroness Hallett's proposed terms of reference for the inquiry, with minor changes suggested by the devolved administrations.