I was somewhat surprised to find among the examples:

past perfect 'already'

British:

They've already eaten.

Surely this is the present perfect not the past perfect.

Under complementation he says:

British:

He appeared tired

He appeared a complete idiot.

General American:

He appeared tired

He appeared to be a complete idiot.

Perhaps I'm going to appear a complete idiot here, but to me "He appeared a complete idiot" and "He appeared to be a complete idiot" mean different things.

Bingley

Bingley