Amazing...
I just looked up Grange Hill now and can't believe they are still producing this show.
I remember it coming on TV when I was a boy in the mid 80's. Although I must say it never interested me because I wa smore into cartoons than live-action programmes.
The british must like their telly so much that they keep running tv show for 20 years. ala "Last of the Summer Wine" and "Red Dwarf".