I had 'Knowledge' binders too, I think I was given them by a cousin back in the '60s, I wish I had kept them.
I had Bunty and then, when the TV related comics started, 'Lady Penelope' from issue one.
'Lady Penelope' is probably worth a small fortune to collectors, so wish I had kept them! In fact my sister and I insisted we had our own copies so small fortune x 2
I moved onto 'Jackie' in 1969......The problem page was a great talking point in the first year of my all girls school
Chris