Björn appeared in promotion for Mamma Mia! The Party for the forthcoming London event from the stage of the Stockholm venue.

He says, "Hi, I'm Björn Ulvaeus. I'm here on the set of Mamma Mia! The Party in Stockholm. It's been a sell-out here for more than three years and I'm so excited to be able to bring it to the O2 in London this summer.

In Mamma Mia! The Party, you're right in the heart of the action. You'll have a gourmet Mediterranean feast and there's a spectular live show and then an ABBA disco - all in one unforgettable experience.

I hope you join us for an ouzo or two - can't wait to see you there!"

Thanks to ABBAtalk