President-elect Donald Trump reacts to questions from reporters in the lobby at Trump Tower in New York, U.S., January 9, 2017.
Wood told US senator John McCain last year that Trump's Russian connections demanded closer inspection, according to multiple reports on Friday. The exchange is said to have taken place at an international security conference in Canada last November.
The Independent reported that McCain asked Wood specifically about the dossier compiled by former British intelligence officer Christopher Steele, which was published by BuzzFeed on Tuesday. Following the conversation, McCain passed the dossier of lurid claims to the head of the FBI, the reports said.
More support for Trump dossier author
Wood, who served as the British ambassador to Russia from 1995 to 2000, told the BBC that he knows Steele and trusts his work. "I know him as a very competent professional operator who left the secret service and is now operating his own private company," he told Radio 4's "Today" programme on Friday.
His support for Steele follows a report in The Guardian in which sources close the former British spy vouched for his experience and expertise. Steele was the former head of MI6's Russia desk, the report said, and has maintained a network of sources in the country.
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BBC
Christopher Steele.
Wood has reportedly gone into hiding after the Trump dossier was leaked, fleeing his home on Tuesday. A source close to Steele told The Daily Telegraph that he was worried about a dangerous backlash against him from Moscow.
His 35-page report described Trump as engaging in compromising activities in Russia and coordinating with Kremlin officials during his presidential campaign. Steele's findings, which have not been confirmed but which attracted the interest of US intelligence officials, were apparently based on conversations he had with Russian intelligence sources. His work was financed by anti-Trump Republicans and later Democrats during the presidential campaign.