Trove of newly declassified files detail investigations into some of country’s most notorious double agents the ‘Ring of Five’ who passed information to Soviets for three decades ...

Kim Philby was the quintessential spy ... as Elliott took that secret to his grave in 1994.

Cambridge spy Kim Philby said he would have done it all again after he finally confessed to being a Russian agent, according to newly-declassified intelligence files. A transcript of the dramatic ...