At high school our work experience "person" back the late 80's/early 90's Stoke told us all that 6th form was only for those wishing to go to University and that it was mainly more classroom based "theory" to prepare you for that, whilst College was more for Vocational or "practical" learning so things like trades, even if the trade was quite complex and required BTEC ONC/HNC/HND etc down to simpler things like City and Guilds etc.
How accurate that breakdown we were given by our teacher was I've no idea. I'd decided since I was small what job I wanted and knew what qualifications I needed to get to do it and, as my job was a "practical" one, I picked my local college, got my qualification and got my job and never thought about doing anything differently along the way.