It's not highly unpopular. The mayor who instigated it won the election by a clear and increased margin.
What it is , is very unpopular with a smallish minority of people, many of whom live outside London, and most of whom were contributing to pollution which should never have been free to create in the first place.
What it is , is very unpopular with a smallish minority of people, many of whom live outside London, and most of whom were contributing to pollution which should never have been free to create in the first place.