(1) The Terrorism Act 2000 is amended as follows.

(2) After section 58A insert -

"Entering or remaining in designated areas overseas

58B Entering or remaining in a designated area

(1) Subject to subsections (3) and (4), a person commits an offence if -

(a) the person enters, or remains in, a designated area, and

(b) the person is a United Kingdom national, or a United Kingdom resident, at the time of entering the area or at any time during which the person remains there.

(2) It is a defence for a person charged with an offence under this section to prove that the person had a reasonable excuse for entering, or remaining in, the designated area.

(3) A person does not commit an offence under this section of entering, or remaining in, a designated area if -

(a) the person is already travelling to, or is already in, the area on the day on which it becomes a designated area, and

(b) the person leaves the area before the end of the period of one month beginning with that day.

(4) A person does not commit an offence under this section of entering, or remaining in, a designated area if -