Murrison broke from his party twice on the Tobacco and Vapes Bill — voting for it at both Second Reading and Third Reading, against the Conservative majority — making him one of a handful of Tory MPs to back Labour's generational smoking ban. He also crossed the floor to support removing Church of England bishops from the Lords during the hereditary peers bill debate. Beyond rebel votes, he has been active on the National Security (State Threats) Bill, backing amendments to preserve judicial oversight, and raised fire station closure threats in his constituency at Prime Minister's Questions earlier this year. His anti-waste-incinerator bill, backed by cross-party support, drew BBC coverage in late 2025 after years of local campaigning on the issue.
A 99.3% party-line voter overall, Murrison sits slightly outside Conservative norms on lords reform — voting more often for scrutiny changes than most colleagues — and leans harder against criminal justice reform and assisted dying than his party average. His 78% voting participation is modest but not unusually low. Defence and the economy dominate his speeches (171 and 147 contributions respectively), and his medical background — he is a former naval doctor — explains both his public health engagement and his position on the tobacco bill. He scores 96% on pro-parliamentary-scrutiny votes and 100% against tax increases.
Murrison has sat on the Finance Committee and the Panel of Chairs, giving him a role in shaping both fiscal legislation and Commons procedure. Recent local news spans crime, transport, and the economy across 79 articles in the past 90 days, though none carries a strongly positive or negative sentiment score. Data on individual speech content is available; granular constituency casework is not.