Overview

• Three Bulgarian nationals, convicted of spying for Russia, attended a Brexit debate in a parliamentary committee room in May 2016.
• The spies, Orlin Roussev, Biser Dzhambazov, and Katrin Ivanova, were photographed at the event, with their presence verified by acquaintances and the BBC.
• The event was sponsored by Baroness Brown of Silvertown, who stated she had no memory of the individuals or their attendance.
• The spy ring, directed by fugitive Jan Marsalek, carried out covert operations across Europe, targeting dissidents, journalists, and military personnel from 2020 to 2023.
• All six members of the espionage network, convicted earlier this year, are set to be sentenced later this week following the UK’s largest counterintelligence investigation.