Alexander then consecutively served as a Parliamentary researcher for MP Joan Ruddock and as a campaign manager for the charity Clothes Aid.

Alexander then served as Minister of State for Courts and Legal Services until she was appointed Transport Secretary in November 2024, replacing Louise Haigh.

Alexander studied at Grey College, Durham,[2][3] where she received a BA in geography and an MA in European Urban and Regional Change.

[9] Heidi Alexander became the first shadow cabinet minister to resign in June 2016,[10][better source needed] calling for a new party leader after the EU referendum and dismissal of Hilary Benn.

During her time in the role, she was tasked with maintaining London transport during the COVID-19 pandemic and leading several rounds of government bailout negotiations.

[14] She notably worked to tackle delays to the opening of Crossrail and re-opening of Hammersmith Bridge, and took up cycling to promote that method of transport.

Initially planning to step down at the end of Khan's first term until the pandemic, she departed her role in late 2021 to "consider her next career move".

[26][24][27] In November 2024, Alexander voted in favour of the Terminally Ill Adults (End of Life) Bill, which proposes to legalise assisted suicide.