Lots of ex military types in Virgin and they are generally pleasant, nice folk to share a flightdeck with. They generally only talk about their exploits if you ask them (usually worth it!) and I have yet to meet one who says out loud that he/she is superior to everyone who didn't wear a green (or red) flying suit.
There were some jokers a few years back who thought that they should jump the seniority list simply because of their background but they were given short thrift from the powers that be.
Anyone like Lord Flashart would be unlikely to get through the selection process unless they could disguise that incredible arrogance for a day. The whole point of the process is not to find out if you can fly upside down over Scotland but if you are the sort of bod that you could stand being with for 10 hours in a flightdeck and several days in a hotel. This point seems to have been missed.