I sympathise with everyone living in the london area., you can only wring so much money out of people. Sooner or later things will backfire on Livingstone but by then no doubt he will have decided to retire just in time to let someone else carry the can. I used to do a lot of business with companies in London but in protest to the congestion charges I stopped dealing with them - it's not their fault but as a matter of principal I refuse to pay the congestion charge necessary to visit them. Who loses out, - not me! It's the London economy as there's plenty of companies elsewhere eager to have the business.
I remember a tv interview with a yank when he was asked what he thought of the incredible petrol price rises in the UK, caused by government tax. He said they only get away with it because the British just lie down and let it happen. He said that it will never happen in the US because the people wouldn't let it and politicians would back down rather than face the consequences and he's right.
What would happen if traffic driving into London from all directions suddenly stopped and blocked all movement in and out of the capital? London can't survive without a working road network. That would get the point across to Livingstone, the government and the country.
Just a thought...