I know that British citizens with dual nationality can join the mob but if you're already in and you have acquired the right to apply for a second nationality can you go ahead and claim it? Grateful for people's experiences / knowledge / thoughts!
You can have a dual nationality. However, there are certain jobs in the navy that do not permit you to do so. Make sure that whatever 2nd nationality you claim for does not exclude you from your current branch. You will have to pay for your second passport yourself.
Be very careful of what nationality you take,if you are thinking of the US there is NO recognitiojn of Dual nationality under US law unlessyou are born with it. When you become a UC citizen you renounce any and all other nationalities, citizenships.