Did anyone else notice this?

[Mark F1]

Obviously, because the British GP is a non-tobacco race, the cars have to run without their tobacco liveries. For example, at Jordan instead of Benson & Hedges on the rear wing they cleverly covered it up with "Be On Edge".

So how come at a number of points around the circuit there were big adverts with "Marlboro F1" on them. And it wasn't as if they were small adverts, they were clearly visable on TV. So how comes the cars are not allowed to run with tobacco sponsorship but there are still big adverts dotted around the circuit?

Surely if there is a ban on tobacco sponsorship in a certain country then that means absolutely no advertising of any nature at all?