Jeremy Corbyn has accused the BBC's Andrew Marr of establishment bias, as he criticised the programme for its coverage of Boris Johnson's relationship with a former model. 

The Labour leader's remarks came as a series of shadow cabinet ministers attempted to turn fire on the media after internal divisions overshadowed key policy announcements at the party's annual conference. 

In a video published shortly after the programme was broadcast on Sunday, Mr Corbyn highlighted a report The Sunday Times. 

The newspaper carried allegations that Boris Johnson failed to declare potential conflicts of interest over a close friendship with an American model turned technology entrepreneur. 

It was claimed Jennifer Arcuri, who moved to London seven years ago, was given £126,000 of public money and was afforded privileged access to three foreign trade missions Mr Johnson led. 

Supreme Court protests: Boris Johnson's prorogation legal or not?  Show all 15 1 /15 Supreme Court protests: Boris Johnson's prorogation legal or not?  Supreme Court protests: Boris Johnson's prorogation legal or not?  Protesters gather outside The Supreme Court ahead of a hearing on the legality of Boris Johnson's proroguing of Parliament Getty Supreme Court protests: Boris Johnson's prorogation legal or not?  The supreme court justices will sit as a panel of 11 judges to hear the challenge, brought by campaigner Gina Miller, that the Prime Minister acted unlawfully when he advised the Queen to suspend parliament AP Supreme Court protests: Boris Johnson's prorogation legal or not?  A woman protests outside the Supreme Court Reuters Supreme Court protests: Boris Johnson's prorogation legal or not?  The PM sent lawmakers home on 9 September until 14 October, just over two weeks before the UK is due to leave the European Union AP Supreme Court protests: Boris Johnson's prorogation legal or not?  Gina Miller arriving AP Supreme Court protests: Boris Johnson's prorogation legal or not?  People protest outside the Supreme Court Reuters Supreme Court protests: Boris Johnson's prorogation legal or not?  Boris Johnson likened himself to the Incredible Hulk days previous as he promised to ignore the Commons legislation ordering him to delay Brexit if negotiations break down PA Supreme Court protests: Boris Johnson's prorogation legal or not?  Officials bring in documents Reuters Supreme Court protests: Boris Johnson's prorogation legal or not?  Protesters hold banners outside the Supreme Court in London, Tuesday Sept. 17, 2019.  The Supreme Court is set to decide whether Prime Minister Boris Johnson broke the law when he suspended Parliament on Sept. 9, sending lawmakers home until Oct. 14 â€” just over two weeks before the U.K. is due to leave the European Union. ( AP Photo/Matt Dunham) Matt Dunham AP Supreme Court protests: Boris Johnson's prorogation legal or not?  Protesters hold banners outside the Supreme Court in London, Tuesday Sept. 17, 2019.  The Supreme Court is set to decide whether Prime Minister Boris Johnson broke the law when he suspended Parliament on Sept. 9, sending lawmakers home until Oct. 14 â€” just over two weeks before the U.K. is due to leave the European Union. ( AP Photo/Matt Dunham) Matt Dunham AP Supreme Court protests: Boris Johnson's prorogation legal or not?  Protesters hold banners outside the Supreme Court in London, Tuesday Sept. 17, 2019.  The Supreme Court is set to decide whether Prime Minister Boris Johnson broke the law when he suspended Parliament on Sept. 9, sending lawmakers home until Oct. 14 â€” just over two weeks before the U.K. is due to leave the European Union. ( AP Photo/Matt Dunham) Matt Dunham AP Supreme Court protests: Boris Johnson's prorogation legal or not?  People protest outside the Supreme Court of the United Kingdom during a hearing on Prime Minister Boris Johnson's decision to prorogue parliament, in London, Britain September 17, 2019.  REUTERS/Phil Noble PHIL NOBLE Reuters Supreme Court protests: Boris Johnson's prorogation legal or not?  Protesters hold banners outside the Supreme Court in London, Tuesday Sept. 17, 2019.  The Supreme Court is set to decide whether Prime Minister Boris Johnson broke the law when he suspended Parliament on Sept. 9, sending lawmakers home until Oct. 14 â€” just over two weeks before the U.K. is due to leave the European Union. ( AP Photo/Matt Dunham) Matt Dunham AP Supreme Court protests: Boris Johnson's prorogation legal or not?  Joanna Cherry of the Scottish National Party leaves the Supreme Court Reuters Supreme Court protests: Boris Johnson's prorogation legal or not?  Demonstrators protest outside the Supreme court in central London on the first day of the hearing into the decision by the government to prorogue parliament on September 17, 2019. ( Photo by Tolga Akmen / AFP)TOLGA AKMEN/AFP/Getty Images TOLGA AKMEN AFP/Getty

"There was something important in one of the Sunday papers today about an alleged abuse of power and misuse of public funds by Boris Johnson before he became prime minister," Mr Corbyn said in the video posted on Twitter. 

He continued: "But do you know what?  Lots of the media have barely touched it.  Incredible, isn't it?  This is about the man who is the prime minister of our country. 

"I was on the BBC's flagship news programme this morning and I was asked about a range of issues.  That's fine, it's right, it's justified, it's how our democracy works. 

But referring to the appearance of the foreign secretary, Dominic Raab, on the programme, he added: "But I was followed by Boris Johnson's deputy who was asked nothing about these allegations. 

"This is how the establishment works.  They close ranks.  They put privilege first.  Things have to change." 

Responding to Mr Corbyn's comments, Mr Marr said on Twitter: "I was genuinely pleased that, on what cannot have been an easy morning for him, JC turned up for a live interview.  And of course I always welcome advice on how to do my job." 

A BBC spokesperson added: "The story was covered during the programme on the news review.  Every interview requires editorial decisions and Andrew focused on the interview with Dominic Raab on Thomas Cook, Iran, the Supreme Court decision and Brexit." 

Ms Arcuri, now 34, was quoted by The Sunday Times as saying: "Any grants received by my companies and any trade mission I joined were purely in respect of my role as a legitimate businesswoman." 

She did not comment on the nature of her relationship with Mr Johnson, and Downing Street declined to comment. 

Elsewhere, Diane Abbott, the shadow home secretary and close ally of the Labour leader, also lashed out at the media at a fringe event hosted by The Guardian's editor Katherine Viner.