Police officers have many powers but these rights can only take place if the officer has proof that they are a police officer, they can either prove it by their uniform or by their warrant card. Your warrant card helps you if you are off duty and for example a fight kicks off, you would need to show your warrant card to make them aware that you are a police officer.
The most common types of power would be stopping and searching someone or asking someone a question if they look suspicious, for example, stop and search; stop and search means that the police have the right to stop and question you at any time, and they can search you depending on the situation.
A police officer has powers to stop and search you if they suspect you are carrying; Illegal drugs, a weapon, stolen property, something that can be used to commit a crime e.g. a crowbar.
A Police Community Support Officer (PCSO) must be in uniform to stop and search you, a police officer doesn’t have to be in uniform but they must show you their warrant card before. The police also have the right to stop and question you, they have to be either in uniform or show you their warrant card. A police officer can stop you at any time and ask you questions like, What you're doing, why you're in an area or where are you going, However you do not have to answer any of the questions the police officer asks you.
The police also have the right to use reasonable force if you try to escape or become violent. They also have the right to arrest you, they can handcuff you and they have the right to search you while you’re arrested.
Although the police have many rights and powers they also have to follow the rules too, police officers can only force entry if they have a warrant and they can only arrest if they see someone committing a crime.
If a police officer is arresting someone in public they do not need a warrant because they have witnesses