I hardly ever saw any TV ads because my mother regarded ITV as being 'common' and normally refused to have it on. However, she did have a weakness for Coronation Street and the muscular males taking part in the Saturday afternoon wrestling, so I got to see a few ads.
I vaguely remember Katie and the Oxo family, the Milky Bar kid (who, even at that age, I regarded as incredibly irritating), Esso Blue, the Mars ads which claimed that 'a Mars a day helps you work, rest and play', Mackeson which 'looks good, tastes good and by golly it does you good' and 2001 which 'cleans a big, big carpet for less than half a crown'. My favourite (as far as I can remember) though, might have been Esso's 'tiger in your tank' ads.
Chris