Mullan has been a reliably active Conservative voice on defence and national security in recent weeks. He voted with the opposition on both the original defence spending motion and against the government's counter-amendment in June 2026, backing calls for greater urgency on military readiness. He also voted for several opposition amendments to the Armed Forces Bill at Report Stage, and opposed the government's timetable restrictions on the National Security (State Threats) Bill — consistently pushing for more parliamentary scrutiny of security legislation. None of these were rebel votes against his own party; they reflect standard Conservative opposition positioning against the Labour government.
At 75% participation, Mullan votes slightly below the Commons average. He is a 100% party-line voter, having never broken with Conservative whip. His stance profile fits the Conservative mould closely — firmly against tax increases, strongly pro-business, tough on crime — though he sits notably above his party average on restricting assisted dying (100% versus a party average of 68%) and on whistleblower protections. His 1,036 contributions across 182 debates place him among the more active backbenchers; crime dominates his speaking record, followed by economy and jobs, social care, and defence.
Mullan, a former A&E doctor, has drawn local coverage for challenging housing targets affecting protected land in East Sussex and pressing ministers on the economic pressure facing local pubs. He holds no current select committee seat. Recent local news sentiment data returns a neutral average across 13 articles, spanning crime, culture, and housing — not enough to identify a clear positive or negative local narrative. The high-impact news items available predate his move to Bexhill and Battle, limiting longer-term constituency comparison.