The termin bobbies comes from the Home Secretary Robert Peel. He created the the modern police force concept. The Police is often called Peeler - after Robert Peel's surname - or Bobby which is a short form of Robert.
If you called the police on your teacher for no reason you would probably be charged with reporting a false incident. If there is a valid reason to call the police on your teacher then the only thing that would happen is that the teacher would be dealt with by the police and courts in an appropriate manner.
Probable cause
Landlords are not typically notified when the police are called to their property unless there is a specific reason for them to be informed, such as a legal requirement or if the situation directly involves the landlord.
Probable cause.
Yes, there is a reason for them to be there. It is called reasonable doubt.
They were called loyalists.
Anyone can report you to the police with proper reason.
yes, because they have a valid reason to be there and it was observed in "plain view"
To enforce laws, the same reason police exist everywhere else.
No, a police officer cannot detain you without any reason. They must have a valid reason, such as suspicion of a crime or a threat to public safety, to detain you.
No, police officers do not have the authority to exceed the speed limit without a valid reason.
Certainly. Beating someone for "no reason," is an Assault.