Approximated Social Grade with its six categories A, B, C1, C2, D and E is a socio-economic classification produced by the ONS (UK Office for National Statistics) by applying an algorithm developed by members of the MRS Census & Geodemographics Group. It applies to every Household Reference Persons (HRP) aged 16 to 64.

Grades Grade Social class Chief income earner's occupation Frequency in 2008 [3] Frequency in 2016 [4] A Upper middle class Higher managerial roles, administrative ... 4% 4% B Middle middle class Intermediate managerial roles, administr ... 23% 23% C1 Lower middle class Supervisory or clerical and junior manag ... 29% 28% C2 Skilled working class Skilled manual workers 21% ...