ANT and Dec's Saturday Night Takeaway is enjoyed by millions each week.

The hit ITV show sees the Geordie duo joined by a surprise guest announcer. But which star-studded celeb is the latest on the schedule? Here's everything you need to know.

Who is the guest announcer on Ant and Dec's Saturday Night Takeaway?

On the episode airing Saturday, March 18, hosts Ant and Dec will welcome Hollywood actress Toni Collette to the studio as this week's guest announcer.

Previous guest announcers have included notable names such as, Gordon Ramsay, Rob Delaney, Alesha Dixon, Romesh Ranganathan, Steve Coogan, Pamola Faith, David Tennant, Big Zuu and Daisy May Cooper.

What is Ant and Dec's Saturday Night Takeaway?

Ant and Dec's Saturday Night Takeaway is a hugely successful variety show on ITV, which first aired in 2002.

Since then it has had 18 series, with the 19th season currently underway.

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The show stars Ant and Dec along with a whole host of other celebrities who take part in various segments from Win the Ads, In for a Penny, and the End of the Show Show.

What celebrities are appearing on the ITV show?

Show bosses have revealed some of the highlights those watching at home can expect – including which famous faces will be appearing on the latest ITV instalment.

There will be a 'Get Out Of Me Ear' hidden camera stunt starring Joe Wicks – who leaves a workman at his home nervous as he munches a whole cauliflower while cackling about brain-eating zombies.

There's also the return of Singalong Live and another episode of the celeb-packed drama Murder At Bigwig Manor.

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In true Saturday Night Takeaway style, each episode finishes off with a spectacular stage performance by some of the country's biggest and best performers.

This week singer Jake Shears will play out the programme in the End of the Show Show.

Ant and Dec's Saturday Night Takeaway (March 18) will be available to watch live on ITV at 7.15pm and will wrap up at 8.45pm.

The fun-filled episode has been pushed back from its usual slot to make way for the Six Nations coverage.

The show, which is usually on at 7pm, will be followed in the schedules by Starstruck and The Jonathan Ross Show.

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