London - (Extraterrestrial Mess): Up to six hundred and sixty-six Russian covert intelligence officers may be hiding behind the facade of a UK anonymous top secret safehouse located at No 10 Connaught Square, London W2, global HQ of the Blair Mindcrap Foundation.
They said to be preparing for the arrival of an alien mothership whose probe crash-landed in the Podkamennaya Tunguska River area of Russia's Krasnoyarsk Krai on 30 June 1908.
The 30 megaton impact punched a massive 900 square mile crater destroying 100 million trees, hundreds of thousands of illicit Bolshevik vodka stills and the country's entire wooly mammoth population.
The London ex-KGB spooks have all been microchipped with latest anti-SatNav technology to deflect the craft's laser scanners searching out specific DNA patterns on the centenary of the Tunguska wipe-out, dubbed Russia's Roswell incident.
For the last 100 years the Russian State Secrets Agency has spun a barely credible cover-up story denying any knowledge that a fecund female alien survived the 1908 impact and went on to seed parts of northern Russia with her half-breed spawn.
But NATO military inteligence sources suggest otherwise.
Descendants of the alien hybrids are now believed to number several million and have infiltrated public orifice around the globe.
But now they are wanted back home and face compulsory repatriation via the Tunguska centenary incident mothership.
"Of course some of the really ugly fatcat specimens like Cherie Blair might just get dumped from the craft into the Dead Sea where their Mossad roots really lie," a NATO top brass source suggested.
"Ditto her arse-faced birth mother Margaret Hilda Thatcher."