Nigel Farage visited the Ecuadorian embassy in West London on Thursday morning - but refused to say whether he had met with WikiLeaks founder Julian Assange.

“I never discuss where I go or who I see,” Farage told BuzzFeed as he left the embassy with Christian Mitchell, the head of operations at LBC radio station.

A source close to the former Ukip leader refused to comment on the reasons for his visit to the address in Knightsbridge, telling ITV News that there are no links between Farage and Assange.

ITV News has also approached LBC for comment.

Assange, 45, has been claiming asylum inside the Ecuadorian embassy since June 2012 to avoid being extradited to Sweden where authorities want to question him on suspicion of sexual offences.

He fears being transferred from Sweden to the United States and put on trial for releasing a trove of highly-classified US intelligence information.

Assange has been hiding in the Ecuador embassy for over four years. Credit: PA

Farage - who is known to be close to President Trump- visited the Ecuadorian embassy just days after WikiLeaks divulged thousands of documents detailing America's cyberspying capabilities.

The then-candidate Trump famously declared his love for Assange's organisation during the US election campaign when it published a number of damaging emails from Hillary Clinton's campaign.

But his administration is now striking a very different tone.

Sean Spicer, the White House press secretary, told reporters on Thursday that the president had expressed "grave concern" about WikiLeaks' latest release of classified material.

Asked whether Farage was visiting Assange to deliver a message on behalf of President Trump, a laughing Spicer replied: "I have no idea - I have my own concerns here keeping track of what everyone is doing. I don't worry about what's going on across the pond."

When pressed further, Spicer said the line of questioning was "silly" and that he did not have the schedules of "random foreign leaders".