"If he becomes US President he will be able sensibly to make the big decisions," Nigel Farage wrote of Donald Trump. | Getty Brexit leader Farage: Trump was my warm-up act

Days after the man who is widely credited with leading the United Kingdom out of the European Union spoke at a Donald Trump rally in Mississippi, Nigel Farage is now claiming Trump was his "warm-up" act.

In an opinion piece published on the Daily Mail website Saturday, Farage, former head of the United Kingdom Independence Party, described how he saw a change in the Republican nominee's speaking style after Trump introduced him at the Jackson rally earlier this week.


In the piece, Farage said Trump's July 21 speech at the GOP convention in Cleveland, which Farage attended, was "disjointed" and "simply didn't flow." He also said that "Trump is very new to politics and has made a lot of mistakes."

Farage described a different Trump in Jackson, however, and praised the Manhattan mogul's new campaign team. He said Trump was a "better and more confident speaker" and "stuck in a disciplined manner to a script."

Farage did not endorse Trump in Jackson, as, he wrote, he had protested President Barack Obama "for telling us what to do in our referendum." Instead, Farage talked about the "Brexit" movement and how it relates to U.S. politics. "They went wild," he said of the crowd.

Farage said he is "far less worried" about Trump becoming president after having met and spoken to him.

"If he becomes US President he will be able sensibly to make the big decisions," Farage wrote.

Despite his criticism of Trump's convention speech, Farage wrote: "The morning after the convention I woke up wondering whether all of this had really happened. But I saw on US television that overnight there had been a bounce in the polls for Trump. There was a renewed confidence among the Mississippi Republican team and a feeling the Trump campaign had turned the corner. "

Trump has frequently compared his campaign to that of the UKIP campaign to take Britain out of the European Union. "They will soon be calling me MR. BREXIT," he tweeted Aug. 18.

The U.K. voted to leave the European Union in a referendum June 23, a result that stunned many political observers.