We have quite an old toilet in our house and every time toilet paper is flushed down it completely clogs, it can be a little or a lot of toilet paper. It doesn't do this with anything else, just toilet paper. We've had to result to getting a bin next to the toilet for now. We had a plumber look quickly at it and he said he couldn't understand it but he's more of a kitchen fitter than anything else.
I have rodded the toilet on numerous occasions, well, everytime someone comes to visit and forgets about the 'no roll down the loo' rule.
Any advice would be very grateful.