Yulia Skripal's cousin has told the BBC she is 100% certain the alleged conversation with her cousin is real.

A recording of the alleged phone conversation was aired earlier today on a state-owned Russian TV channel.

Doubts have been cast on how authentic the recording is.

Yulia Skripal and her father Sergei - a former spy - were poisoned by a nerve agent in Salisbury in March.

Viktoria spoke to Newsnight's Gabriel Gatehouse.