Taxi business is getting to full bloom now days in UK. Due to increase in tourism and people living away from their workplaces, they choose not to go by their own. Rather they prefer going by taxi

A hackney carriage is an automobile for hire. It is also known as black cab or London taxi. In UK the name hackney carriage refers to a taxicab licensed by PCO (Public Carriage Office) in greater London or by some other local authority in other parts of Great Britain