'No way' Salisbury nerve agent came from us, says lab boss

The boss of the Porton Down defence laboratory, where the Novichok substance was analysed following the poisoning of former spy Sergei Skripal and his daughter Yulia, has dismissed Russian claims that the nerve agent could have originated from there. Gary Aitkenhead said: "We would not be allowed to operate if we had the lack of control that could result in anything leaving the four walls of our facility here." Report by Chulanin. Like us on Facebook at http://www.facebook.com/itn and follow us on Twitter at http://twitter.com/itn