This Chapter analyses the ambiguous relations between “perfide Albion” and Miranda, as well as the British strategy with Spanish America. Still, it also provides an opportunity to demonstrate that Miranda’s precursor degree can be assessed without being influenced by today’s values and ideas. The reason is that this case compares two historical facts from the same era: Miranda’s analyses and forecasts with those of the British administration, and what actually happened during these times of European wars. We show Pitt’s constant procrastination due to two linked fears when having to decide on a military intervention promoting a change of political regime in Spanish America: (i) the dread of socio-ethnic upheavals impeding benefit from stable trade with Britain and carrying the stay of excessive forces on the oversea ground, and (ii) the uncertainty about the ability of the American inhabitants to organise and accept a substitution of the Spanish authority for the British one. Contrary to several current views, this analysis aims to demonstrate that Miranda’s failure to obtain the necessary British military support was not primarily due to an imperialist, self-serving strategy, but instead to British strategic mistakes that hindered maximising these self-serving interests, which were ultimately beneficial to Napoleon’s power and expansionism, with a tremendous cost for Latin America and Europa. The prolonged bloody wars, lasting for many years, due to the British Hegemon’s mistakes, exacerbated nationalist reactions within Europe as well as anarchical civil wars in Spanish America, with lasting effects on their political systems and underdevelopment.