Margaret Mullane is a British Labour Party politician who has served as the Member of Parliament (MP) for Dagenham and Rainham since 2024.

[1] She succeeded Jon Cruddas who decided not to run for re-election in 2022,[2] whom she worked for as office manager.

[5] Margaret Mullane was raised in council houses in Dagenham, attending St Peter's School, and has described herself as working class.

She successfully campaigned to protect residents of Wennington from paying the Community Infrastructure Levy on rebuilding homes that were lost in a 2022 wildfire.

[10] During the 2024 United Kingdom general election, amidst a Labour Party landslide, she won the Dagenham and Rainham constituency with a slightly reduced share of the vote.