[nothrabannosir]

Not disagreeing with your post, but when talking about black cabs and ULEZ we shouldn't forget the historical diesel subsidies:

> The resulting financial incentive for diesel cars helped to prompt a "dash for diesel" after it came into effect in 2001 and was extended in further years. This particularly happened within company car fleets which were responsible for a substantial proportion of new car purchases.

> There are now 12 million diesel cars on Britain's roads, while back in 2000 there were only three million. And in recent years diesels have accounted for around half the new car market, whereas in 2000 only one in seven new cars was a diesel model.

- https://www.bbc.com/news/uk-politics-41985715

This was a massive 180 by government, which explains some of the exceptions for black cabs.

However, anyone who bought a car after they realised the mistake and repealed it, deserves less sympathy. I wish the ULEZ exception took that into account.