Opposition Day Motion: Defence
Tuesday, 24 March 2026 · Division No. 460 · Commons
246 MPs did not vote
Voting Yes means
Support the opposition's position on defence, likely calling for stronger commitments on defence spending or criticising the government's approach to national security
Voting No means
Reject the opposition's motion, backing the government's existing defence policy and spending plans
What happened: On 24 March 2026, the House of Commons voted on a Conservative opposition day motion on defence policy. The motion was defeated by 306 votes to 98. Opposition day motions are a parliamentary tool that allows parties outside government to set the terms of a Commons debate and force a vote, though such motions are non-binding even if passed. The Conservatives voted almost unanimously in favour, but the Labour and Labour-Co-operative benches voted solidly against, producing a comfortable government majority.
Why it matters: The motion called on the government to publish its long-delayed Defence Investment Plan, which sets out how the Ministry of Defence intends to spend its budget over a ten-year horizon. It also raised concerns about the impact of that delay on military procurement, arguing that defence contracts are being frozen and that British defence companies, including smaller suppliers, are suffering as a result. The motion additionally called for the government to abandon the Northern Ireland Troubles (Legacy and Reconciliation) remedial order on morale grounds, and to refuse to ratify the Diego Garcia treaty with Mauritius. The defeat means none of those calls carry formal parliamentary weight, and government defence policy continues on its existing course.
The politics: The vote split almost entirely along party lines, with 97 Conservative MPs voting in favour and all Labour and Labour-Co-operative members present voting against. One independent and the sole Traditional Unionist Voice MP also voted with the Conservatives. Reform UK, which holds eight seats, was entirely absent. The Greens, who have been critical of increased defence spending from a different angle, voted with the government. The debate took place against a backdrop of intense political pressure over the pace of Britain's defence build-up, with questions about NATO spending rankings, the conflict involving Iran in the Middle East, and the broader security environment in Europe all feeding into the argument.
How They Voted
Government position: No
What They Said in the Debate
Conservative · South Suffolk
Defence Investment Plan delay is creating procurement freeze and defence industry collapse; UK must spend 3% GDP on defence this Parliament, funded by two-child cap and redirecting net-zero spending, and add 20,000 troops.
Voted Aye
Liberal Democrats · Lewes
Conservatives hollowed out armed forces; 3% GDP spending needed by 2030 funded via defence bonds not welfare cuts; defence investment plan must be published immediately; strengthen sovereign capability, reduce US dependence.
Conservative · Harwich and North Essex
Treasury has not committed funding beyond 2029 despite 10-year DIP; government failing to prepare for war as in 1930s appeasement; welfare spending misdirected when rearmament is urgent strategic need.
Voted Aye
SNP · Alloa and Grangemouth
Military spending has low employment multiplier compared to health, education, infrastructure; defence should not trade off against feeding families; choose investment in people over weapons.
Voted No
Conservative · New Forest East
Cold War defence spending was 4.5-5% GDP; current comparisons misleading; deterrent dependent on US goodwill; need clarity on RAF retaliation if UK bases attacked by Iran.
Voted Aye
Labour · Hackney South and Shoreditch
Government and Opposition both have defence procurement failures; need rigorous spending that delivers kit to personnel; past £4.5bn injection did not solve problems due to ineffective spending.
Voted No
Labour · Birmingham Selly Oak
Government is taking methodical, serious approach to defence; plan must balance multiple threats and past procurement failures; rushing it for headlines would weaken security; reject Conservative motion as uncosted shopping list.
Voted No
Labour · Loughborough
Agree more defence spending needed, but two-child cap restoration would weaken nation and divide it; defence requires economic strategy on production and scaling, not just GDP percentage; no child should go hungry.
Voted No
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