I'm not even Flt Lt in a mil organisation to which I belong.
Always said I didn't want to be a fifty year old flight lieutenant.
Interestingly, many believe that only Sqn Ldr or equiv and above may retain rank after leaving service.
MoD sent me a letter specifically saying that, even as a Flt Lt, I could retain the style.
They also said I couldn't wear my uniform to a fancy dress party which got me thinking I'd just spent the last eight years in a great party