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. 2000 May 13;320(7245):1303–1307. doi: 10.1136/bmj.320.7245.1303

Table 1.

Office for National Statistics' socioeconomic classification

13 category classes Description 7 category classes Description
L1 Employers in large firms (>25 staff) 1 Higher managerial and professional
L2 Managers in large firms
L3 Professionals
L4 Associate professionals 2 Lower managerial and professionals
L5 Managers in small firms
L6 Higher supervisors (supervisors of intermediate workers)
L7.1 Clerical and secretarial 3 Intermediate occupations
L7.2 Intermediate public service occupations
L7.3 Intermediate technical occupations
L8.1 and 8.2 Employers in small firms 4 Small employers and own account occupations
L9.1 and 9.2 Non-professional self employed occupations
L10 Supervisors of craft and routine occupations 5 Lower supervisors, craft and related occupations
L11 Craft and related occupations
L12 Semiroutine occupations 6 Semiroutine occupations
L13 Routine occupations 7 Routine occupations