Dear Your Majesty,
Good evening Ma'am, yer Royal Highness ( think that covers all bases ) just a quick post to inform you of what is happening in this little Kingdom of yours, well they are at it again ( Yes Ma'am, you know who I mean ) they have started work on building brand new Submarines to protect your shores, yes Ma'am it is great that we have money to burn on wonderful projects like this, your loyal subjects are swimming in dosh, not only that Your Majesty but we are also spreading the wealth, those wonderful Frenchies are going to supply the steel to build your weapons of mass destruction wonderful sailing ships, so jolly good all round.
Your loyal subject and Servant,
Gonnagle.
PS: Some of your subjects are a tad unhappy because we are not using British steel, but I think the fact that we are helping the less fortunate ( those poor Frenchies ) is something they just can't grasp.