In the United Kingdom, diplomatic immunity is granted to diplomats from other countries under the Diplomatic Privileges Act 1964. This act gives diplomats a number of privileges and immunities, including:
* Immunity from arrest and prosecution
* Immunity from civil lawsuits
* Immunity from paying taxes
* The right to use diplomatic bags, which cannot be opened or inspected by the authorities of the host country
* The right to fly their own national flag and display their own coat of arms
Diplomatic immunity is not absolute, however. Diplomats can still be expelled from the host country if they commit serious crimes or engage in activities that threaten the national security of the host country.
In the United Kingdom, the Foreign and Commonwealth Office is responsible for administering diplomatic immunity. The FCO works closely with other government departments, such as the Home Office and the Ministry of Justice, to ensure that diplomatic immunity is granted and respected in accordance with the Diplomatic Privileges Act 1964.