Sorry, cannot answer your questions but one thing to note, when my son went to UK with the intention of joining the army he was told that there was a two year residency requirement before being allowed to apply. After two years, he contacted Capita, who were in charge of recruiting and was told it was a five year residency. So he never bothered. Now recruiting has been changed to Serco. If your son is living outside UK he will have to abide by the residency rules. It is 2 years, not 5, by the way.