Michael McIntyre's Big Show is to return to BBC One in the autumn, with its run extended to eight episodes.

Series 3, which was broadcast in November and December, attracted an impressive average audience of 6.9 million viewers.

The BBC confirms: "The popular Saturday night entertainment show will be back with more superstar celebrity guests, more music and even more laughs. Plus there are more chances for the audience to get involved than ever before as the hunt is on for members of the public to nominate their loved ones to be the Unexpected Star or play the Midnight Gameshow."

Michael McIntyre says: "I'm thrilled at the continued success of the Big Show. Every series gets bigger and better and Series 4 will be our most ambitious yet. There will be new audience surprises as well as returning favourites such as Send to All, the Midnight Gameshow and some extraordinary stunts for the Unexpected Star of the Show. I can't wait!"

Kate Phillips from BBC Entertainment Commissioning comments: "Michael's Big Show is always a big treat on BBC One and this one promises to be bigger and better than ever. I'm looking forward to more brilliant stand-up and stand out games."

Dan Baldwin from producers Hungry McBear Media adds: "We are delighted Michael McIntyre's Big Show is coming back for an extended run. Which means more Midnight Gameshows, more Send To Alls and more Unexpected Stars! Plus we have some exceptional new ideas to throw into the mix. Plus Michael has been touring non-stop on his world tour and is on the best form of his life - which is going to lead to an outstanding series for BBC One."

The new episodes will be recorded at the Theatre Royal, Drury Lane later this year, to be shown on BBC One in the autumn.

The hunt is currently underway for people to surprise. Producers say: "Viewers can be part of the show, if you know anyone who is an amazing singer or musician who could be the next Unexpected Star of the show or would you like your partner to be woken up in the middle of the night by Michael to play the Midnight Gameshow? Contact casting@hungrybear.tv for more information."