Lawyers for the dead man's widow Marina told the hearing Litvinenko had been "a paid agent and employee of MI6" at the time of his death, who was also, at the British secret service's instigation, working for Spanish intelligence providing information on Russian state involvement in organised crime.
Litvinenko's planned trip to Spain with Lugovoi aimed to deliver intelligence to Spanish prosecutors of Russian mafia links with the Kremlin and Vladimir Putin, Emmerson said.
http://www.guardian.co.uk/world/2012/dec/13/alexander-litvinenko-murder-british-evidence-russia