A secret document submitted to the British parliament accused Moscow of establishing a high-level intelligence network to advance interests and track "Putin's enemies", but Russia denied.

Political activist and British financier Bill Browder has submitted secret evidence including a 50-page document to the British Parliament's Intelligence and Security Committee (ISC), which alleges that Moscow may have hired British politicians and consultants to "advance Russian interests, follow political enemies" of President Vladimir Putin in the country and pay them a high salary.

"Some know exactly what they are doing, to whom, while others inadvertently benefit the Russian state," Browder said.

The Browder prosecutors in this network include politicians from both the Labor Party and the British Conservatives, former intelligence agents, diplomats and leading public relations experts. Browder called it the "western buffer network," but the report did not elaborate on the British who joined it.

Browder accused Moscow of deploying its team to "attack Putin's critics, enhance Russian propaganda and facilitate large money laundering activities".

The ISC has conducted a two-year investigation of Russia seeking to exert political and social influence in Britain, according to the Guardian. Browder's secret document was ready to be published in November last year, ahead of the UK general election. However, British Prime Minister Boris Johnson's office later refused to publish the document, saying it "contained little new information and was not convincing".

Dmitry Peskov, Putin's spokesman, called Browder's allegations "false" and "completely baseless" and "a perfect example of a blind Russian syndrome."

The Kremlin has repeatedly asked Interpol to issue orders to arrest Browder and call him a criminal. Russia also condemned the absence of Browder on charges of tax evasion and deliberate bankruptcy, but Browder denied any allegations.

Bill Browder, 56, British-American, is the general manager and founder of investment fund Hermitage Capital Management. It was one of the largest investment funds in Russia between 1995-2006, helping Browder to acquire large wealth. However, the Russian government in 2006 banned Browder from entering the country after declaring him a "threat to national security".