From this thread.
CZ 75 BD vs CZ 75 BD Policehttps://czfirearms.us/index.php?topic=27520.0"There are several minor differences:
The CZ 75 BD police has
1) Loaded chamber indicator
2) Lanyard loop
3) Serrations on the front and back of the grip
4) Extended magazine release
5) And of course, it says "Police" on the slide
6) I have read that it has serrations on the trigger face and that the magazine release is reversible, but I can't confirm these features."
There are several other threads on the topic here on the forums. For more info, i suggest doing a web search.