What is the ruling on a Muslim working as a bus driver in London, given the presence of advertisements and images on the bus depicting semi-naked women, alcoholic beverages, and forbidden films?

It is not permissible to work as a bus driver for a bus that carries advertisements for sins and abominations, such as advertisements for alcoholic beverages and immoralities, because the driver's work in this case is considered assisting in the promotion of those forbidden things. This is what Allah has prohibited in His saying: (And cooperate in righteousness and piety, but do not cooperate in sin and aggression). And whoever gives up something for the sake of Allah, Allah will compensate him with something better and provide for him from where he does not expect.