Ealing Southall.

One of Labour's most loyal MPs since entering Parliament in 2024, Costigan has nonetheless drawn local scrutiny: striking Ealing traffic wardens protested outside Parliament in April 2025, accusing her of ignoring their calls for union recognition after she had previously backed their insourcing campaign. That tension sits awkwardly alongside her 90% alignment with pro-workers-rights votes in the Commons. More positively, she has pushed hard on housing -- demanding accountability from property management firm FirstPort, welcoming the Renters' Rights Bill, and leading a parliamentary debate on Ealing homelessness after visiting local charities. Her sole rebel vote, in December 2024, was a procedural one: she acted as teller for a motion to hold a session in private, which was overwhelmingly defeated.

At 94% voting participation and 99.8% alignment with the Labour majority, Costigan is a highly engaged, near-loyalist MP. Her 185 contributions across 114 debates span economy and jobs, social care, fiscal policy, local government and health -- a broad workload rather than a narrow specialism. She deviates from her party slightly on parliamentary scrutiny (voting for it more often than most Labour MPs) and leans more sceptical than her colleagues on assisted dying, scoring higher on anti-assisted-dying measures and lower on end-of-life autonomy.

Two caveats shape this picture. Her speech record ends in December 2025, so recent parliamentary activity is not fully captured here. She holds no select committee seat, limiting her formal scrutiny role. Local news coverage over the past 90 days is high in volume but neutral in tone, concentrated on crime and local government -- suggesting a visible local presence without a dominant single issue driving headlines.