Donald Trump claims biggest audience ever, but he's wrong

US President Donald Trump is again under scrutiny after being caught in another lie about the size of an audience that turned out to watch him deliver a speech.

The Trump administration infamously claimed his January 2017 inauguration had garnered "the largest audience ever to witness an inauguration, both in person and around the globe" - but his crowd was just a third of the size of President Obama's eight years prior.

Despite the backlash to that claim, he's now been caught making a similarly erroneous comment about the size of the TV audience for his State of the Union address.

"Thank you for all of the nice compliments and reviews on the State of the Union speech," Mr Trump tweeted on Thursday morning.

"45.6 million people watched, the highest number in history. Fox News beat every other network for the first time ever, with 11.7 million people tuning in. Delivered from the heart!"

However research company Nielsen has revealed while the total figure Mr Trump named for the speech was correct, it was far from "the highest number in history".

Former President Bill Clinton drew the largest TV audience for a State of the Union address when 66.9 million people watched him in 1993, while George W Bush attracted 62.1 million viewers in 2003.

President Obama's first two State of the Union speeches also beat out Mr Trump, garnering 52.4 million and 48 million people in 2009 and 2010 respectively.

Ironically, Mr Trump's State of the Union speech in 2017 - an unofficial one, albeit - had a larger audience than his one this week did.

He was also caught out for overstating the number of Fox News viewers by 200,000.