18:00Six O'Clock News17/09/2015 Head of MI5 calls for anti-terror law updateBBC Radio 4 Duration: 30 minutes Thu 17th Sep 2015, 18:00 on BBC Radio 4 FMAvailable for over a yearListen nowThe head of MI5 says advances in technology mean anti-terror laws should be updated.GenresNewsFormatsBulletinsBrandSix O'Clock News Source: BBC Online