In Britain the polite term would be metropolitan.

Most members of Tony Blair's cabinet were people of metropolitan outlook and taste.

It is OED sense 4.

4. A native or inhabitant of a metropolis or large city; a person who has metropolitan ideas, manners, etc.

1795 A. Hughes Jemima I. 83 You are a Paisley by nature as well as by birth, and incapable of becoming a worthy metropolitan.

1815 J. Jekyll in Bentham's Wks. (1843) X. 486 To so inveterate a metropolitan as myself this is no grievance.

1882 E. O'Donovan Merv Oasis II. liv. 407 The people at Merv considered themselves altogether as metropolitans.

1987 A. Brien Lenin ii. 95 I could not believe that these sophisticated metropolitans, all of them Petersburg graduates, could be so..obtuse.

1996 Independent 20 Aug. ii. 2 (heading) The brave new metropolitans.

In Britain the polite term would be metropolitan another might be urbane. .

Most members of Tony Blair's cabinet were people of metropolitan outlook and taste. The professional class in Saudi Arabia are people of a perfectly urbane outlook.

Metropolitan - OED sense 4.

4. A native or inhabitant of a metropolis or large city; a person who has metropolitan ideas, manners, etc.

1795 A. Hughes Jemima I. 83 You are a Paisley by nature as well as by birth, and incapable of becoming a worthy metropolitan.

1815 J. Jekyll in Bentham's Wks. (1843) X. 486 To so inveterate a metropolitan as myself this is no grievance.

1882 E. O'Donovan Merv Oasis II. liv. 407 The people at Merv considered themselves altogether as metropolitans.

1987 A. Brien Lenin ii. 95 I could not believe that these sophisticated metropolitans, all of them Petersburg graduates, could be so..obtuse.

1996 Independent 20 Aug. ii. 2 (heading) The brave new metropolitans.