Born in Swindon, Alexander studied at Churchfields Comprehensive School (now Lawn Manor Academy) and New College before going on to gain a BA in geography and an MA in European Urban and Regional Change from Grey College, Durham. Alexander then consecutively served as a parliamentary researcher for MP Joan Ruddock and as a campaign manager for the charity Clothes Aid.
In 2018 Alexander resigned her seat to become Deputy Mayor of London for Transport where she remained until 2021. In the 2024 general election Alexander was elected the MP for Swindon South. 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 had a 6-month placement in the office of Cherie Blair at 10 Downing Street in 1998.[7] She worked as a Parliamentary researcher for Lewisham MP Joan Ruddock from 1999 to 2005, and as campaigns manager for the charity Clothes Aid from 2005 to 2006.[8]
Heidi Alexander became the first shadow cabinet minister to resign in June 2016,[12][bettersourceneeded] calling for a new party leader after the EU referendum and dismissal of Hilary Benn.[13] In an opinion piece for The Guardian, Alexander wrote "I loved being the shadow health secretary. But I hated being part of the shadow cabinet...because it was entirely dysfunctional" and "so inept, so unprofessional, so shoddy".[14]
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.[16] 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".[17][16]
Alexander opposed the triggering of Article 50 following the EU referendum, proposing a "reasoned amendment" in January 2017 to throw out the article.[27] She co-founded the Labour Campaign for the Single Market in 2017, and is a supporter of the pro-EU group Open Britain.[28][26][29]
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