From today's Telegraph online:
Falklands oilfields could yield $176bn tax windfall - Telegraph
It looks like the Falkland Islanders will be able to afford their own defences in the near future as well as pay back the UK for 30 years of protection against Argentinian aggression. That should help to pay off the UK's debts.
Provided that the current government doesn't blow things in the near future and either allow the Argies to invade again or negotiate their handover..........