http://www.itv.com/news/london/2015-...ayment-change/
Members read this and think, whose making the money.
I have used this crossing late at night, and my god. When you pay the money, sometimes, the coins go through and don't register. Therefore you are stuck.
In reality, if you are crossing a major river then you have no choice, but if you are on the M25 you are stuffed.