"Give the Nimrod to the Navy"
My counter when we had 4 sqns is the same as my argument now only doubled and redoubled.
The RAF has a large training input and a large pool of aircrew. Crews to man the Nimrod are drawn from all the RAF aicrew and can, when time expired, be posted to other types.
If the Navy had to recruit and train for just the Nimrod and Helos where would they put those that were suitable as aircrew but unsuited to their limited roles or manpower requirements.
It simply makes more sense to have all the aircrew in one service. I would make an exception for the Army as their AAC is a sufficiently large entity to have an economic training system and a unique role.
You could make the argument for all RN aircrew to be in light blue uniforms.