"But HMG keep saying how they respect the Falkland Islanders right to self determination, if so would it not be more benificial to grant the Islands Independance, then let the Falklands join the Commonwealth or rejoin the UK."
Not really no they are currently self governing in all matters apart from Foreign realtions and defence, thats about as independant as a "country" with a population of 3,500 can actually be, if they asked for full independance it's be granted but they have no desire for it at the moment