Those of you saying it's a waste of time - what do you propose regarding the excessive levels of tax on fuel?
It is a waste of time, how is grinding a busy urban centre to a halt 250 miles away from Westminster, going to achieve anything other than, a) make people unassociated with setting tax, duty, and fuel prices late for wherever it is they need to be, and b) turn the majority against you.
"Yeah we're really sticking it to the man here! We made Matthew 4 hours late for his shift at Burger King and they docked his pay. Take that you upper class toff's!!!"