For thirty years, Britain's defence and foreign policy ran on the same assumptions, America would show up, NATO would hold, and the threats were mostly known. None of that can be taken for granted anymore. Burden-sharing arguments have turned into open disputes. The threats themselves have multiplied and blurred, state and non-state, military and economic, often at once. Britain still hasn't decided what it's actually willing to spend, or lose, to defend its interests. And the debate keeps circling the same tired questions instead of confronting the new ones.

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Most of the policy response has been reactive statements after the fact, reviews that land years too late, positions built to survive a news cycle rather than a decade. Westbrook Advisory does the opposite. We produce research built to hold up under scrutiny from people who've actually done the job, and sharp enough to be used by the people setting policy now, not shelved for the next white paper.