Re: "urban progressives" - we can distinguish, perhaps, within the professional class, between more center-right business and financial professionals and managers and more progressive academic/educational professionals and people in arts and culture.
The 2011 NHS only includes the very broad categories for occupation and not all a majority are professional: for instance, Business, Finance and Administration includes not only accountants and stockbrokers but also secretaries and clerical workers. Meanwhile, Social Science, Education, Government Service and Religion is majority-professional but includes lawyers, social workers, social scientists, teachers and professors.
This is terrible news for Ed Miliband.