Inverted Commas

Hello, I've got another little question.
I understand in BrE one single inverted comma is prefered to two inverted commas (AmE), for example:
AmE: "Helo," he said.
BrE: 'Hello,' he siad.
I asked a teacher about this and I was told one inverted comma was not used because it could cause confusion with the apostrophes: it's, we're, etc.
But then I saw a book with dialogues written with one single inverted comma.
Would you please clarify this for me! Thank you very much in advance. :wink:

[Tdol]

Single inverted commas are becoming more and more common in BE; you'll see both used. I think it's because of keyboards, as single ones are easier.

Originally Posted by tdol

Single inverted commas are becoming more and more common in BE; you'll see both used. I think it's because of keyboards, as single ones are easier.

So both are correct, right? Thanks!