Exclusive: British intelligence caught FBI spy chief secretly meeting a Russian in London

Charles McGonigal, former special agent in charge of the FBI's counterintelligence division in New York, arrives at a federal courthouse in Manhattan on Feb. 9. John Minchillo/AP

• An FBI spy chief's secret meeting with a Russian contact was detected by UK officials.

• Charles McGonigal, the ex-FBI official, is charged with taking money from Russian tycoon Ol…