Assuming your terrible food doesn't poison all your countrymen first.
But really, that brings up an easy counter-strategy. All we have to do is quickly establish a potato famine in Ireland with a couple quick sailing expeditions across the sea to torch everything that's green and remotely organic. If the Irish fight back, all we have to do is kamikaze that with Brannigan's Gambit (wave after wave of our own men), going on psychotic burning rampages until there's nothing left worth burning.
With their agricultural infrastructure in ruins (because God knows you people would be too busy with your silly future flying machines to improve the Irish standard of living to quell discontent), the disenfranchised Irish will pour across the way to your great isle, depressing your economy and standard of living as a horde of Catholic babymakers. Even if your military initiative crushes colonial resistance, all we have to do is wait it out while the Irish destroy your country. As you, too, stream out of your own countries to your colonial holdings to escape Third Worlddom, we can just pick you kids off as we will, pilfer your strange repeating rifles and your personal music players, and bog you down in a standard-issue morally ambiguous quagmire.
As the idiots of the world, once we lower you to our level, I ASSURE you that we'll beat you with experience. Your silly cape-wearing robots are nothing but the ancient arrogance of the white race, who believe they are privy to the power of God to move the world and all things in it. Your folly will be your GLORIOUS destruction.