Members of the spy ring in the 1930s spilled secrets to the Soviet Union from the heart of the U.K. intelligence establishment.

The Cambridge spies have inspired myriad books, plays movies and TV shows, including the 2023 series “ A Spy Among Friends,” starring Guy Pearce as Philby and Damian Lewis as Elliott.

There are a feast of programmes to entertain all the family over the festive fortnight, with an unmissable line-up that will bring people together in a way that only the BBC can No one does ...