Marie Tidball.

Marie Tidball broke with Labour on 1 July 2025, voting against the Universal Credit and Personal Independence Payment Bill at Second Reading — one of the most significant rebellions in this parliament, in which dozens of Labour MPs defied the whip over cuts to disability benefits. The vote is particularly notable given that Tidball, who has a disability rights background and was highlighted on election as one of a small cohort of newly elected disabled MPs, has a 30-percentage-point stronger record than Labour colleagues on assisted dying access and sits 27 points above the party average on anti-benefit-cuts votes. She is otherwise a 99.8% party-line voter.

Her parliamentary participation rate of 78% sits below the Commons average, though 214 contributions across 93 debates suggests active engagement when present. Her speeches cluster heavily around social care, health, the economy and local government — a pattern consistent with both her disability advocacy background and the pressures facing her South Yorkshire constituency. She votes strongly for workers' rights and progressive taxation, and has backed the government on immigration, trade union balloting reform and the Windsor Framework machinery regulations. Her stance profile shows near-zero alignment with positions characterised as pro-business or tough-on-crime.

Tidball holds no committee seats, which limits her formal scrutiny role. The news data available is dominated by coverage of her predecessor, Conservative Miriam Cates, who lost the seat in 2024 amid a parliamentary standards investigation; recent local sentiment data for Tidball herself is insufficient to draw conclusions. Her disability rights record and the welfare rebellion are the clearest signals of where she may diverge from the government again.