Information on all things RAF can be found at: 

http://www.rafweb.org/Menu.htm

Irreverent Meaning		Rank		Rank		Irreverent Meaning
		Leading aircraftman/woman		Pilot officer
		Senior aircraftman/woman		Flying officer
		Senior aircraftman/woman technician		Flight lieutenant
		Junior technician		Squadron leader
		Corporal		Wing commander
		Sergeant		Group captain
		Chief technician		Air commodore
		Flight sergeant		Air vice marshal
		Warrant officer		Air marshal		Implements government policy without question, only complaining afterwards when retired and Knighted. Appear powerful, but are government lackeys. Future BAe Directors.
				Air chief marshal
				Marshal of the RAF