Didn't remember the words "Mush" until "Lank" posted them but the tune is still in the back of my head.
I remember all those Dave. Domino cleverly sold a little packet of 3 for about a tanner, specially designed for schoolkids. The little sleeves had domino spots, from just one tile, on the back and you were meant to collect the lot and bingo you had a set of Dominos. Other brand packets I remember were Turf, Nelson, Craven A, and Robin. Loads of brands featured cats for some reason and "Navy Cut" ciggies seemed like the norm. Heaven knows what Navy Cut meant unless it was half cut like most sailors ashore. :))