Why most imperial capital-ship industry remained in Britain

Why could the British Empire not build more large warships outside the United Kingdom?

Wooden ships were built in India and Canada, but later capital ships required a broad industrial base that imperial economic specialization had left concentrated in Britain.

The empire did build large sailing ships in India and Canada, but modern capital ships demanded an industrial ecosystem concentrated in Britain. Colonial economies specialized around particular imperial functions instead of developing into balanced industrial systems; a single ban does not explain the limitation. Canada, Australia, South Africa, and India were building industrial capacity, but had not reached capital-ship self-sufficiency by the Second World War. Shipyard geography reflected political economy and long-term infrastructure choices.