Simmonds has twice broken with his Conservative colleagues to back the Tobacco and Vapes Bill — voting for it at both Second and Third Reading while his party mostly opposed it. More recently, he has been active as a teller in Commons votes on the Railways Bill, opposing its final passage and supporting opposition amendments to the Government's rail nationalisation plans. In February, he challenged the Government's local council funding settlement, publicly calling out what he described as a concealed £150 council tax rise buried in the small print of funding calculations for London boroughs.
A 99.5% party-line voter overall, Simmonds participates in 79% of votes — slightly below the Commons average. His voting record places him firmly against workers' rights legislation, tax increases, and public ownership, while showing strong alignment with business interests and parliamentary scrutiny. His stance on assisted dying diverges from his party: he votes against it roughly 19 percentage points more often than the average Conservative, suggesting a consistently cautious position on that issue. Local government dominates his speech activity, with 116 contributions on that topic, followed by housing and economy and jobs.
He chairs no select committee at present. His appointment in June 2025 as a Parliamentary Vice-President of London Councils signals a formal liaison role bridging Parliament and London's borough leaders, consistent with his heavy speech focus on local government. In 2023, The Guardian reported he had raised parliamentary questions related to a donor's business interests — an episode that attracted scrutiny from the standards watchdog, though no formal finding against him was recorded in the available data. News coverage over the past 90 days has been broadly neutral, spanning culture, health, and immigration.