UK TV presenter Alastair Campbell made an accidental slip up on live TV that left fans surprised.

Campbell accidentally mentioned that Queen Elizabeth had died during a Good Morning Britain interview about grief.

"We've talked a lot about Prince Philip after the death of the Queen…," Campbell said at the start of the segment before quickly realising what he said.

"Can I just say, Susanna, I think I may have accidentally announced the death of the Queen. I meant Prince Philip," he clarified.

Campbell is filling in after the abrupt departure of Piers Morgan on the breakfast show.

He quickly apologised when the camera came back onto him and his co-host Susanna Reid was reassuring him viewers knew it was a slip up.

"People knew exactly what you meant," she said.

The slip up quickly made it onto Twitter, where viewers were posting about it.

.@GMB .@campbellclaret accidentally announces death of the queen! (He did apologise) #PrincePhilip #queen #gmb 😉 Queen calls up GMB to confirm she is still very much alive! 👸 pic.twitter.com/XXmCbdoHBQ

— Janet Willicott FRSPH FBII ACIEH MEHBEA MBESA BHRC (@janetwillicott) May 12, 2021

"According to Alistair Campbell the Queen died," one person tweeted with shocked face emojis.

"Did he say Death of the Queen then??" another asked.

Campell seems to be taking it in stride, joking that the slip up had gone international with the following tweet.

"Oh god, the exhaustion gaffe has gone global. THE QUEEN IS ALIVE!!!" he joked.