On June 9, 2025, Stop the War Coalition amplified calls for public protest against state violence and government inaction, as highlighted in The Canary article. Their messaging, shared via social media, emphasized growing discontent in response to internationally condemned actions, rallying citizens to demand accountability for authoritarian practices.

At its 2025 AGM, Stop the War Coalition adopted a series of resolutions opposing military interventions, increased defence spending, NATO expansion, and arms proliferation. The resolutions call for a foreign policy independent of US hegemony, advocate for reallocating funds from military spending to social services, and reaffirm a commitment to defending civil liberties including the right to protest.

During its 2025 AGM, Stop the War Coalition adopted a series of resolutions aimed at lobbying the UK government to secure a ceasefire in Ukraine, halt arms exports, resist military spending increases, oppose NATO expansion, and promote an independent, peace-oriented foreign policy. These measures highlight a strong commitment to anti-imperialist and progressive principles.

A group of over 50 MPs and peers have signed a letter calling for an independent review of the policing during the January 18 Palestine protest. The letter criticizes the violent arrest and assault of Chris Nineham, the vice chair of Stop the War Coalition, amid conflicting accounts of a peaceful delegation carrying flowers. The action underscores concerns over disproportionate application of public order laws and authoritarian policing measures.

Activists, including Stop the War Coalition convener Lindsey German, joined workers, students, and trade unionists in protests and blockades targeting UK government departments involved in licensing arms exports to Israel. The action was part of a broader national day of protest demanding an end to state and corporate complicity in what protesters describe as Israel's genocide.

The Stop the War Coalition released a statement condemning proposals to ban protests outside key political institutions, defending democratic protest rights and criticizing political inaction regarding urgent issues such as the call for an immediate ceasefire in Gaza.

The Stop the War Coalition held its first trade union conference focused on building a stronger peace movement and reversing the TUC's previous support for increased arms spending. The conference emphasized anti-militarism, urged unions to prioritize peace and social welfare, and set the stage for upcoming demonstrations against militarism.

Following a well-attended trade union conference in January, Stop the War Coalition has called on trade unionists to support a model motion aimed at demilitarising the economy, reducing arms spending, and diversifying the arms sector. The motion advocates shifting state resources from arms manufacturing toward socially beneficial investments such as renewables, green infrastructure, food security, and peace, thereby reinforcing worker interests and opposing policies that benefit the defense industry and reactionary foreign policy.