“The release reveals new details in the cases of the Cambridge spies Kim Philby, Anthony Blunt and John Cairncross ... loyalty” to Britain’s MI6 spy agency, where he served as a high ...

Philby and Blunt were, along with Guy Burgess, Donald Maclean and John Cairncross ... and without surprise," it said. Cairncross, the last of the spy ring to be publicly identified in the 1990s ...

Several other people have been suggested as belonging to the ring, including John Cairncross ... the British government discovered he was a spy but offered him immunity in return for information.

Philby and Blunt were, along with Guy Burgess, Donald Maclean and John Cairncross ... and without surprise," it said. Cairncross, the last of the spy ring to be publicly identified in the 1990s ...