[BBKing]

Further to this, the Germans are refusing to pay because their embassy is in the extension zone (basically a chunk from Knightsbridge to Notting Hill) - that's not the case with the US. Bangladesh manage to pay. The US owe £150,00 0, having refused to pay since the price went up (which suggests that they were happy with it at £5/day).

Also, the Vienna Convention doesn't quite say 'no taxes on embassies', it's 'no obligation to pay the host nation unless a specific benefit is rendered'. In this case, the argument would be that, since the embassy benefits directly from cleaner air and 30% less traffic on the roads in central London, they're getting a direct benefit from CC and thus should pay.