British police said they would not comment on speculation about the real identities of the two men facing charges,in response to a query about the latest Bellingcat report,and repeated they believed the men had used aliases.
Skripal and his daughter Yulia were found slumped on a public bench in Salisbury,and the case prompted the biggest East-West diplomatic expulsions since the Cold War.
A woman later died from Novichok poisoning after her partner found a counterfeit perfume bottle which police believe had been used to smuggle the nerve agent into Britain.
Mishkin was born in July 1979 in the village of Loyga in the Archangelsk district of northern Russia,and until September 2014 his registered home address in Moscow was the same as the headquarters of the GRU,Bellingcat said.