The BBC News style guide says to use the English Mr
etc. and *not* use the foreign style.
I believe they used to make an exception for Germany and France (Herr, Monsieur, etc.) and possibly some other countries (I believe it was regarded as more polite for widely known languages).
A long time ago, I believe, they used the surname by itself for people who were being paid by the BBC (correspondents etc.).
The Times Style and Usage Guide (now a little old) says to use local honorifics for France, Germany, Austria, Italy Spain (and Latin America), and Portugal (and Brazil) but to use Mr etc. for Belgium, Luxembourg, Switzerland, and Canada).
The Times Style and Usage Guide has rules about when to not use the honorific (e.g. convicted criminals and sportspeople under certain circumstances).
It says that Ms is permissible but ugly, and Miss indicates use of a maiden name (e.g. Miss Jane Fonda) regardless of marital status. It also says to avoid the habit of preceding the name with the job title (not Prime Minister May) but explicitly permits Chancellor Merkel. Dr should preferably be used only for medical doctors.
There are more rules for the dead, the recently deceased, etc.
The newest copy of the AP Stylebook that I have (and probably other style guides) says to use the surname by itself after the first reference.
The English Wikipedia Manual of Style may also be of interest: