Met police box is the first line of defence to prevent a crime from taking place.
It is the nearest to the crime scene where the police can be deployed to stop a crime and it can also be used to detain criminals.
But this line of defense is only useful if there is a good chance that you can be arrested by police.
If you are arrested you can then be charged with aggravated burglary, a serious crime that can carry a jail term of up to 12 years.
The Met Police have warned anyone who has any concerns about their safety to call the police on 101.
If you are unsure if the police are the right person to speak to, you should call the Met on 0800 094 9999.
If it is raining, police have been told to keep clear of the Met Police Box.
Police have been advised to stay in the area and not park in the Met Office precinct where the box is located.
The box is also designed to make sure the police have access to you as they arrive.
If there is an emergency call 999 or contact the police via the dedicated number on the back of the ticket.