This article critically assesses UK and Indian trade policies, arguing both neglect regional supply chain efficiencies. The UK's post-Brexit focus on distant partners, not the EU, led to economic stagnation, reduced productivity, and political dysfunction. India must learn from this "grand delusion," prioritizing deeper trade with immediate SAARC neighbors. Ignoring regional trade is economically detrimental, carrying significant security implications for India, especially given China's expanding influence. Prioritizing regional ties is crucial for stability and growth.