Ant and Dec stun Alison Hammond and Dermot O'Leary as they gatecrash 'This Morning'

Ant and Dec shocked Alison Hammond and Dermot O’Leary when they burst into This Morning unannounced.

The presenters barged into the ITV daytime studio during its live broadcast on Friday (25 March), banging cymbals, blowing whistles and covering everything in confetti to announce the return of Saturday Night Takeaway.

Hammond and O’Leary looked stunned and started laughing as Ant and Dec told viewers: “Saturday Night Takeaway is back on tomorrow night!”

Read more: Saturday Night Takeaway viewers thrilled by Ant and Dec's drag queen makeover

The show was not on last week, because rugby was being shown instead.

Dec went on: “We were actually just passing, we were on our way to film something for tomorrow night’s show.

"But we just wanted to remind you and everybody because we had a week off last week because of the rugby, so we just wanted to remind you all that we are back tomorrow night at 7pm.”

Ant added: “We normally see you in the tea bar don’t we after you finish the show, but we thought we would interrupt your show!”

The TV stars revealed that Line Of Duty actor Anna Maxwell Martin and singer Michael Buble would be guests on their programme.

“Anyway, we’ll let you be,” they said.

“Sorry about that.”

The duo then marched out of the studio, leaving the This Morning presenters looked shocked.

Read more: Stephen Mulhern bursts into This Morning for Takeaway stunt

Turning to O’Leary, Hammond asked: “Gosh, I didn’t expect that… What just happened?”

This Morning is on weekdays at 10am on ITV and ITV Hub.

Saturday Night Takeaway airs on ITV on Saturday at 7pm.

Watch: Ant and Dec announce Saturday Night Takeaway is cancelled for Six Nations coverage