The group of Bulgarians, who were living in the U.K., were convicted by a London jury of conducting surveillance operations across Europe on behalf of the Russian state.

A team of Russian agents have been found guilty following the biggest spying investigation in Britain. The spy ring, made up of Bulgarian nationals, plotted kidnaps, disinformation campaigns, surveillance against Ukrainian troops and secret weapon trades with China from their base in Great Yarmouth in the UK.

Three Bulgarian nationals have been found guilty of spying for Russia, in what police have described as "one of the largest" foreign intelligence operations in the UK.