18:00Six O'Clock News06/04/2018 Sergei Skripal 'improving rapidly' after poisoningBBC Radio 4 Duration: 30 minutes Fri 6th Apr 2018, 18:00 on BBC Radio 4 FMAvailable for over a yearListen nowDoctors treating the former Russian spy, Sergei Skripal, say he is no longer critically ill after being poisoned by a nerve agent.GenresNewsFormatsBulletinsBrandSix O'Clock News Source: BBC Online