British businesswoman and Labour Party life peer. Co-founder and former CEO of Darktrace (2013-2024). UK Minister of State for Investment (2024-2025). Former Autonomy employee. Elevated to House of Lords as Baroness Gustafsson.
Poppy Gustafsson resigned as UK Minister of State for Investment on September 5, 2025, the same day as Deputy PM Angela Rayner. Official reason cited was family-work balance conflicts, though speculation suggested frustration with slow government decision-making pace.
Poppy Gustafsson was appointed Minister of State for Investment by Prime Minister Keir Starmer in October 2024. Created life peer as Baroness Gustafsson to sit in House of Lords. House of Lords Appointments Commission complained it was only given 48 hours to vet her before announcement.