"Brit" is in wide usage in the U. S. and Canada; it is fixed firmly in our vocabulary.
"True Brits" was the title of a three-month long screening last year of films made in GB? UK? Britain? That little island to the east of the puddle? ....., shown by the Kansas City, Mo., Public Library.

One of the co-sponsors was the Britcom Club, which shows British television and film comedies, organized by Kansas City Public Television.

"True Brit" is the title of a recent book featuring former Brit cartoonists who now live in the U. S.

Or should the appelation be expanded to "True Briton," as in the 18th c. English toast, and the old song once sung to "Hearts of Oak"?

Should John Cleese be condemmed for his contribution to the comic, "Superman, True Brit"?