Do not forget the RAF came in to being on April 1 1918. CFS predates that as does the Roundel. as I said before, the RAF would have to pay the RN and the Army for the use of their logo, if ownership can be proved. As an afterthought. The Union Flag was originally designed purely as a Jack for HM Ships. It only came ashore later on. So any one wishing to use it should pay royalties to MoD(N) (as the Admiralty is now John Prescot's home). I don't think. Who ever thought this up is completely barking.