If you're buying an older van make sure it isn't a Euro III that's banned from London (unless you pay a daily charge). There's a flood of non-emissions compliant vans on the market at the moment - of course Euro IV vehicles have firmed up price-wise.

Big companies generally lease their vans and lorries – as usual the small man on the street gets stiffed and the rich get richer. How many small businesses will go out of business because of this law?