How much do foreign diplomats owe in unpaid London congestion charges as of July 2013?

The correct choice reflects the reported figure for the total amount of unpaid London congestion charges owed by foreign diplomats as of July 2013. This situation arises from the fact that many foreign diplomats in the UK enjoy certain exemptions under the Vienna Convention on Diplomatic Relations, which can lead to significant outstanding charges, especially in a busy urban environment like London where congestion fees are applied to navigate traffic.

The figure of £67 million represents a specific and documented amount that was reported by local authorities or relevant agencies. This charge accumulation reflects ongoing issues that municipalities face regarding enforcement and collection of fees from foreign entities, who may not prioritize payment of local charges due to diplomatic privileges.

This context sheds light on how large sums can accumulate when there are exemptions in place, and highlights the complexities involved in international diplomacy and local governance.