St Helens South and Whiston.

Rimmer has broken with Labour five times since July 2025, making her one of the more rebellious figures on her party's backbenches. In July she voted against the Universal Credit and Personal Independence Payment Bill at both committee stage and third reading -- joining left-wing rebels who opposed welfare changes they argued would harm disabled people. In February she backed two opposition amendments to the Industry and Exports Financial Assistance Bill that would have blocked UK export finance where goods might be re-exported to Russia or where modern slavery was involved. Her voting record on disability benefits sits 88 percentage points above her party's average, the sharpest deviation in her profile, and she is markedly more resistant to welfare reform than most Labour MPs.

At 62% voting participation she falls noticeably below the Commons average. Within the votes she does cast, she is a reliable Labour loyalist on workers' rights (92% aligned) and progressive taxation (100%), but sceptical of business-friendly measures (10% aligned) and parliamentary scrutiny mechanisms (14%). Her 32 speeches since the election have clustered around defence, social care, economy and jobs, and fiscal policy -- a spread that reflects her North West industrial constituency. In February she raised in Parliament that some St Helens residents have a healthy life expectancy of just 57, drawing on local health inequality data to press the case for better funding.

Rimmer has held her St Helens South and Whiston seat since 2015 and sits on no select committees in the current parliament. Recent local news coverage -- averaging a neutral score across 32 articles over the past 90 days -- is dominated by crime reporting rather than her parliamentary activity. The absence of committee work limits her formal influence, but her rebel votes on welfare suggest she is willing to use the division lobby to signal dissent on issues she regards as constituency priorities.