RR is British. Here is what has changed. India UK FTA happened. India UK strategic tie up happened. What this meant is, even if Indian Government dont give orders in AMCA or anything else, RR can now create parts needed for its engines in India. If I am to believe RR India CEO, they started working. As per him there are 9 parts which are core to engine. They are already manufacturing 2 in India. They will start manufacturing 5 more in India before end of 2026.
RR is already providing engines to newer versions of Indian ships. They are already ramping up Industrial capacity, production lines for engines needed for tanks ships, subs and Planes(Fighter and commercial) in India.
Brits are lawyers by nature. FTA and Strategic parnership was minimum they needed on paper before they could do anything on ground. Simply because its cost effective to supply them parts in their own engine lines in rest of world, their Commercial Compulsion will ensure manufacture in India. I am keeping fingers crossed.