He’s admitted to suffering “sleepless nights” in the weeks running up to it, but it seems that the James Corden era of ‘The Late Late Show’ is going to be a success.

The British actor marked his very first time presenting the CBS chat show on Monday, and those present at the filming of the first episode on Sunday evening have given him the thumbs-up for his personable style, with one group telling Sky News’ US correspondent that he had “nailed it”.

James Corden
James Corden seems to have gone down well with his 'Late Late Show' debut

Following weeks of rehearsal and a long and very visible publicity campaign in the States, Corden had some big names appearing on his debut show, including Tom Hanks and Mila Kunis, the latter of which dropped a bombshell by strongly hinting that she and Ashton Kutcher had gotten married.

More: Mila Kunis confirms marriage to Ashton Kutcher on ‘The Late Late Show’

A member of the audience told Sky News afterwards: “I have never experienced anything like it. He was gracious and happy to have everyone there and he was so thankful for the opportunity. He was personable, talking about his family and his kids. He was really funny.” British newspaper The Mirror reported likewise, describing Corden's debut as "funny, but loveably self-deprecating".

Corden was named as the replacement for Scottish comedian Craig Ferguson in the middle of last year. He’s already putting his own mark on proceedings, with one noticeable change coming in his insistence that all of his guests should remain together on stage during throughout the show – something that’s highly unusual for U.S. audiences yet common practice in Corden’s native Britain.

‘The Late Late Show’ is shown every weeknight after midnight, so Corden’s challenge is obvious – keeping TV audiences awake. It follows ‘The Late Show’ – logically – which is also undergoing a personnel change in the near future when David Letterman stands down after 22 years, to be replaced by Stephen Colbert in September.

Ahead of his first show, Corden was remaining humble despite his loveable and roguish on-stage persona, telling Sky News: “It is different to everything I have ever done. I don't even really know what I'm about to do. I'm talking like I have any authority but I know nothing.”

More: Five things you need to know about James Corden before his debut on ‘The Late Late Show’