BGT is back tonight: Here's what you need to know

The Britain's Got Talent judges with hosts Ant and Dec

It's time to dust off the golden buzzer.

Britain's Got Talent is back for a brand new series.

The first episode goes out tonight on ITV1, STV and ITVX.

Read on to find out more on what to expect from this series, including a brand new guest judge!

Who will host the show?

Ant and Dec have hosted Britain's Got Talent since 2007

Ant and Dec of course!

The pair have hosted every series of the show since it started, way back in 2007.

Gallery: Ant and Dec over the years

Last year, Ant and Dec won their 23rd TV Presenter Award at the National Television Awards.

Ant joked that one day they won't collect the award, but said that it was a "joy" to win again.

Who are the judges?

Judges Simon Cowell, Amanda Holden, Alesha Dixon and Bruno Tonioli are returning alongside a brand new guest judge

Simon Cowell, Amanda Holden, Alesha Dixon and Bruno Tonioli are all back to judge this next series.

And there's a brand new guest judge for this series - YouTube star KSI!

What happened last series?

Singer Sydnie Christmas won last year's Britain's Got Talent

This will be series 18 of Britain's Got Talent so there have been lots of winners in the past.

Last year the winner was a singer called Sydnie Christmas.

She impressed the judges with her performance of the song Somewhere Over the Rainbow from The Wizard of Oz.

She won £250,000 and a spot at the Royal Variety Performance – a big charity event held at the Royal Albert Hall in London, which some of the Royal Family attend.

Will you be watching the new series? And if you applied for the show, what would your talent be?