Great Britain and Germany, with the exception of the Heligoland-Zanzibar Treaty, were largely antagonistic with each other. They called each other despots and imperialists, yet they shared much in common. Germany had the potential of Great Britain, but repressed itself to minor colonial expansion and continental politics. So, what if, through any means possible, Great Britain and Germany became allies in the quest towards world domination. I've seen scenarios like this before in timelines where WWI starts later and Great Britain is pushed into Germany for the sake of the balance of power (because of the growing power of Russia). I've also seen timelines like this that stem from the Fashoda War, or the Russo-Japanese War, which are based around France and Great Britain going to war.
Could you please come up with a timeline wherein Great Britain and Germany willingly ally for the sake of their mutual growth? Perhaps involve the planned Anglo-German partition of the Portuguese Empire?