Odd that Sky News do not credit Bellingcat:
Bellingcat and its investigative partner The Insider – Russia have established conclusively the identity of one of the suspects in the poisoning of Sergey and Yulia Skripal, and in the homicide of British citizen Dawn Sturgess.
Curiously bellingcat use sources familiar with the GRU and so I'd take this with a "pinch of salt":
The source further surmised that to send a highly decorated colonel back to a field job would be highly extraordinary, and would imply that “the job was ordered at the highest level.”
Link:https://www.bellingcat.com/news/uk-a...toliy-chepiga/

There's also this - which credits Bellingcat:https://www.telegraph.co.uk/news/201...sias-highest/?