Russell Nicholson joined MI5 in 1953. In 1959 he joined the KGB. David Lander presents a profile of this notorious spy and interviews him at his luxury home in Bulgaria.
Studio production by Stephen Fry assisted by JACK KLAFF, ANDREW SACHS. BRENDA BLETHYN and FELICITY MONTAGU
Dramatic reconstructions by ROBERT BATHURST and TONY ROBINSON
Research by TONY SARCHET
Editor PAUL MAYHEW ARCHER
(Re-broadcast tomorrow at 12.30pm)