"Like the "Don't buy petrol today" thing the "big boys" will still laugh at you -where do you think the other petrol stations get their supplies of petrol? "

That's a fair point Teribus, although there's far less profit in wholesaling than in retailing and they've got a lot of retail overheads to support wether or not they're selling any fuel.
I suppose the real target for any campaign in the UK should be the government who are taxing fuel excessively. I accept the arguments for driving fuel prices up in order to make us use our cars less, there are many benefits to be argued, but I don't believe that is the motive of recent successive governments, who see the motorist as a cash-cow, there to be milked.
If we could all use public transport everyday, and stop smoking, we would all be fitter, our environment would be healthier and our economic masters would be in panic!
C-flat.