An amazing advert included in the Limited Special Edition of the ABBA - The Movie DVD and ABBA - The Album Deluxe Edition (NOTE: the link to ABBA - The Movie is to the Australian footage.  The Swedish footage is in a separate entry).

You see them briefly sing along to The Name of The Game, Take A Chance On Me and Thank You For The Music.

It was most probably filmed when ABBA were in London for the premiere of ABBA - The Movie ie. when they were on Blue Peter and had those famous Carlton Terrace balcony pictures taken where Agnetha was wearing a brown wrap over her jeans in those pictures and she wears it here also.

As the advert is for the UK Epic version (blue cover) then it figures that it was filmed in London. It's also possible it could have been directed by Lasse Hallström as he would (not The Dorchester) have been in London for the première.

A second advert was also produced and officially released on the Limited Special Edition of the ABBA - The Movie DVD and ABBA - The Album Deluxe Edition.  It contained no unique footage but was made up of clips of The Name of the Game, Eagle, live footage of He Is Your Brother (but with the audio of Take a Chance on Me and Thank You For The Music).

Benny and Björn scuttling around like kangaroos!

Greatest Hits Commercial, 1976;
Arrival Commercial, 1976;
ABBA - The Album Commercial, 1977;
A Wie ABBA Commercials, 1981;

Thanks to Richard Knight and Danny Bradley.
YouTube links c/o anapaus and abbaborg