275. Duration of privileges and immunities.

A person entitled to privileges and immunities enjoys them from the moment he enters the United Kingdom in proceeding to take up his post or, if he is already there, from the moment when his appointment is notified1 to the department of the Secretary of State2. When his functions have come to an end the privileges and immunities normally cease when he leaves the United Kingdom, or on expiry of a reasonable period in which to do so, but subsist until that time even in case of armed conflict