End of Britain's "Splendid isolation" - 1902?

Question:

It says that Britain's splendid isolation ended in 1902 when the Anglo-Japanese alliance was signed, but surely the end of Britain's splendid isolation would have been when they fought in the Boer war of 1899? ... Thanks in advance :)

Answer:

Splendid Isolation meant Britain had no allies because it neither wanted nor needed any because it was so strong due to the resources of Britain and its empire.The Anglo-Japanese Alliance of 1902 was an admission that Britain did now need allies,so is recognized as the end of Splendid Isolation.

The Boer War that began in 1899 was fought without aid from any external allies,the resources of the British empire being brought to bear to end the conflict.So,it was in no way the end of Splendid Isolation.