The professional head of the RAF is the Chief of the Air Staff (CAS), Air Chief Marshal Sir Stephen Dalton. The CAS heads the Air Force Board, which is a committee of the Defence Council. The Air Force Board is the management board of the RAF and consists of the Commander-in-Chief of Air Command (Air Chief Marshal Simon Bryant), together with several other high ranking officers. The CAS also has a deputy known as the Assistant Chief of the Air Staff (ACAS); this post is held by Air Vice-Marshal B M North.
Authority is delegated from the Air Force Board to the RAF’s command. While there were once individual commands responsible for bombers, fighters, training, etc., now only the Air Command exists, headquartered at RAF High Wycombe.