On 7 March 2018 and on 14 March 2018 two notices were issued to protect MI6 , in relation to some aspects of the Skripal affair ( Poisoning of Sergei and Yulia Skripal ) . In the early 1990s Sergei Skripal was recruited by Pablo Miller , the MI6 agent inside the UK embassy to Estonia in Tallinn . The MI6 officer under diplomatic cover in Moscow at this time was Christopher Steele . Miller was also the handler of Skripal after he went to jail and was released by Russia in a spy swap . Both lived in Salisbury . Steele and Miller worked for Orbis Business Intelligence which compiled the controversial " Trump – Russia dossier " , comprising 17 memos written in 2016 alleging misconduct and conspiracy between Donald Trump 's presidential campaign and the Putin administration . While the precise nature of the relations between Skripal , Miller , and Steele were hidden , enough was already known to raise sharp questions about Skripal 's ongoing involvement with British intelligence
Poisoning of Sergei and Yulia Skripal
Poisoning of Sergei and Yulia Skripal
DSMA-Notice