Piers Morgan has spoken of his dream job after he was unveiled as the new host on one of America's biggest talk shows.

The Britain's Got Talent judge and journalist replaces Larry King Live on CNN from January, the US network said.

Morgan's show, which has not yet been named by CNN, will air worldwide in more than 200 countries, the network said.

The 45-year-old said he was "thrilled" and "very much looking forward to bringing my own style of interviewing to the world's biggest, and best, TV news organisation".

He added: "As a young journalist in Britain, I watched CNN's astonishing live coverage of the 1991 Gulf War, and felt enthralled by the courage and brilliance of the journalists involved in that coverage.

"Years later, I watched Anderson Cooper's visceral reports from New Orleans after Hurricane Katrina, and felt equally enthralled by his passionate and relentless search for the truth.

"Perhaps most pertinently, I have watched Larry King Live for much of the last 25 years, and dreamed of one day filling the legendary suspenders of the man I consider to be the greatest TV interviewer of them all.

"To now have the chance to work with Larry and Anderson, and to try and continue the outstanding journalistic legacy created by them, and so many others at CNN, is both a great honour, and a great challenge."