The defamation case currently focuses on the procedure known as discovery, where both sides provide internal or other records that could serve as evidence.

Lawyers for the BBC said the corporation had produced 87,000 pages of documents, while they said the Trump side had published a “false production” of just 735 pages, which they said were “news articles” and other material “taken from the Internet.”

BBC lawyer Charles Tobin said this meant the discovery process had been “completely one-sided”.

Trump’s lawyer, Alejandro Brito, described the BBC’s document requests as “oppressive” and “broad.”

He also objected to BBC requests for records about Trump’s conversations with aides related to the Capitol riot, as well as subpoenas issued to federal agencies and former officials.

Trump’s legal team accused the BBC of conducting a “fishing expedition” with subpoenas to “harass” former officials.

Much of Trump’s lawyers’ argument centered on a letter sent by BBC chairman Samir Shah to the US president in November last year.

In the letter, Shah apologized for the Panorama clip, which he said inadvertently gave the “erroneous impression that President Trump made a direct call for violent action.”

Brito described the letter as a “concession” and “admission” on the part of the BBC.

The BBC has already tried to have the entire case thrown out, arguing that the documentary was not broadcast in the United States. The court has not yet ruled on the matter.