[zabzonk]

> isn't British English.

Eh? Most commonly uttered words in UK English: "Have you put the bins out?"

[titanomachy]

He means not exclusively British English

[Lio]

Then he should probably say that.

Almost no words are exclusively "British English" as it is the original and oldest dialect of the language.

[actionfromafar]

Both are equally old ;)

JK ... but American English retain many older features of English which British English since modified.