IMHO, any 'engagement' to protect the F.Is would absolutely require Uncle Sam's support. The Royal Navy can barely catch the drug runners (and a bloody good job they do too btw
) let alone amass a formidable task force to protect our assets down there and the few Typhoon there would be virtually useless against any decisive land invasion from Argentina.
Sure we have options but the USA would have to be on board.
Again, this is all supposition for now