Just to record that Military controllers also provide control and advisory Services to civilian aircraft too! Mil area controllers at WD used to handle many civvie tracks - don't know what its like now though; and terminal controllers provide LARS - effectively for free.
Despite being 'unlicenced' and required to pay for very expensive conversion courses to get our civil licence, we were suddenly acceptable to provide services to BA and what is now BMI in the days of the 'East Coast Trial'; that is, until NATs got their act together when, overnight, suddenly we weren't 'good enough' again!
