"The Sunday Telegraph": Daily Telegraph names last year's expelled Russian diplomat/spy as Mikhail Repin.

Russian spy Mikhail Repin was expelled from Britain after he was caught attempting to recruit politicians and senior Whitehall officials as agents.

Young, good looking and articulate, he introduced as himself as "Michael" at events at Westminster think tanks and embassy receptions.

A slight accent betraying his foreign roots, the tall, suave, urbane young man mixed easily with politicians, businessmen and policy wonks on the Whitehall drinks party circuit.

But rather than being the fast-track civil servant, defence industry high flier or political adviser that many assumed he was, "Michael" was Mikhail Viktorovich Repin, Third Secretary in the Political Section at the Russian Embassy, and a spy.

Far removed for the caricature image of fictional Soviet agents, Repin had arrived in London in the wake of the murder of dissident former KGB officer Alexander Litvinenko, allegedly on the orders of the Kremlin, after several Russian diplomats had been expelled from Britain.

Within two years he himself had been kicked out of the country following "clear evidence" of spying.

Repin was part of the political directorate known as "Line PR" and answerable to the most senior spy at the embassy the "Rezident".

His job appears to have been to talent spot potential agents in the political world who were in a position to obtain useful information to give Russia a political or economic advantage.

He set about his task with enthusiasm, attempting to "cultivate" individuals who either currently or in future may be of value to the Russians and quickly came to the attention of MI5 "watchers", from the Security Service's A Branch, tasked with keep Russian diplomats under surveillance.

Repin left Britain in December 2010. A British diplomat was expelled from Moscow in the now customary tit-for-tat response.

Neither man was named. To do so would break an unspoken "gentlemen's agreement" between the intelligence services in both countries.

Repin's whereabouts are now unknown. His cover is blown and he is unlikely to be given another foreign posting.