Could Britain have afforded the full planned bomber and strategic-submarine forces?
Short answerProbably, if the government chose to fund them; affordability depended on debt and spending priorities rather than an absolute inability to pay.
NotesState defence spending does not follow a household-budget model. Governments choose how quickly to pay down long-term debt, how much interest to service, whether to issue bonds, and which public programmes receive priority. More aggressive debt reduction or additional civilian spending leaves less room for defence, while a different choice can support a larger force. Affordability in this case is a political allocation rather than a purely technical verdict.