From the MoD:
Currently serving as Deputy Commander-in-Chief Personnel, Air Marshal Stephen Dalton will take up post as Chief of the Air Staff on 31 July 2009.
Air Marshal Dalton will be succeeded in turn as Deputy Commander-in-Chief Personnel by Air Vice-Marshal Simon Bryant, who will be promoted to the rank of Air Marshal on taking up his new appointment.
Air Marshal Christopher Moran is promoted to the rank of Air Chief Marshal and will take up the post of Commander-in-Chief Air Command and Air Aide-de-Camp to Her Majesty The Queen. He succeeds Air Chief Marshal Sir Clive Loader who is retiring.