Classification: SEG70
Short name: SEG70
Full name: Socio-Economic Group 1970
General description: Classification by socio-economic group (SEG) was introduced in the UK in 1951 and was substantially revised in 1961. The aim of the classification scheme is that ‘each socio-economic group should contain people whose social, cultural and recreational standards and behaviour are similar.’ (1970:x)
SEG is a non-hierarchical classification of people into one of 20 groups determined by their occupation and employment status. In 1970 the SEG classification was based on the Classification of Occupations 1970.
It is an unordered classification, unlike the Registrar General's Social Class (RGSC) which is an ordinal one.
Changes in classification of occupation between 1970 and 2000 affect the grouping of occupations within the SEGs, but not the names and codes of the groups themselves.
LS description: The LS SEG variable takes a value between 00 and 19 corresponding to each of the 20 SEG codes.
Keyword: Socio-economic
Start date: Census 1971
References: Classification of Occupations 1970, London: Her Majesty’s Stationery Office
Equivalent classifications: NS-SEC (Census 1971)
SEG80 (Census 1991)
SEG90 (Census 2001)