some of the words are ''going to come back to you''.

written and performed by Ian Lefeuvre from Pirate Radio & Television.
he probably wrote it only for the commercial.

Either this is a proprietal song written just for this ad, or it is slipped through my exhaustive search through singers and groups that are in my memory. l thought of Mamas and Papas, and all the folk/pop groups with female singers - but it still escapes me. What a neat voice that singer has. The closest song it reminds me of is ''Hey there Georgie girl but it is not the Seekers. Still looking.