We didn't have Irn Bru down south in the 60s. we didn't have Dandelion and Burdock either. These were northern drinks. I remember Tizer being big, and we had Carona Lemonade, Limeade, Orangeade and Cherryade. There was also R Whites Lemonade and Cream Soda. Sometimes you'd get a harmless lemonade shandy drink and I remember Top Deck Lime with Larger Flavour.
I don't think Cola passed my lips until I was about 11.