Years ago, I had some plasterboard to get rid of. We had to go to a specific site, produce proof of address and which Council we pay Council Tax to, driving licence, shoe size etc......
Last year we went to our local tip and noticed there was a skip there for plasterboard so I took the plasterboard where I fell through the ceiling and was able to just put it in a skip, no questions asked.
Our lot charge 5 quid a bag for plaster board, rubble, soil, tiles etc. They class a bag as a typical rubble sack. All my DIY stuff goes in our waste collection bins. I'll run a few kitchen bin bags down the tip if needed. I wouldn't dream of doing this with genuine trade waste but ****ed if I'm paying the council 10 quid to tip one sheet of gypsum after a leaky roof at home or summit.