There is nothing I enjoy more than a good bit of pedantry, for our American cousins that means being picky.
In Britain the RN and the other two services have physical differences in the way they salute, this does not mean that when I am on a ship I adopt the Naval style of saluting.
In the British forces the commission is saluted, not the person. Thus, and I hope you can see where I am going, in view of the facts presented above you can't expect any British NCO or airmen to salute a new WO1 as they aren't commissioned and therefore would not be saluted if they were British. However, on gaining a commission as CW2 I can see that there is some justification for expecting a salute from British enlisted men.
To be honest with you though, your whole b****y rank structure is so complicated you can hardly expect those not daily immersed in it to fully comprehend it.
In short Newbie, back in your box for at least a year!